Union-wide
Inter- and Transdisciplinary Sessions
Disciplinary sessions AS–GM
Disciplinary sessions GMPV–TS

Session programme

OS

OS – Ocean Sciences

Programme group chairs: Karen J. Heywood, Johan van der Molen

MAL17
OS 2020/2021 Fridtjof Nansen Medal Lectures & 2021 Division Outstanding ECS Award Lecture
Conveners: Karen J. Heywood, Johan van der Molen | Co-convener: Meriel J. Bittner
Presentations
| Thu, 22 Apr, 15:00–16:50 (CEST)
DM16
Division meeting for Ocean Sciences (OS)
Conveners: Karen J. Heywood, Johan van der Molen, Meriel J. Bittner
Thu, 22 Apr, 11:30–12:30 (CEST)
MAL1b
EGU 2020/2021 Alfred Wegener Medal Lectures
Conveners: Alberto Montanari, Helen Glaves
Presentations
| Wed, 21 Apr, 11:30–14:30 (CEST)
NET20

Public information:
Join us for our Early Career Scientist Networking. There will be a short introduction of the ECS representatives and then time to get to know each other in break out rooms.

We also encourage senior scientists to join and share their experiences and guidance to ECS.

Looking forward to get to know you!
Conveners: Meriel J. Bittner, Madeleine Vickers, Alicia Fantasia
Tue, 20 Apr, 12:30–13:30 (CEST)
NET36
OS-event for all division members I
Convener: Meriel J. Bittner | Co-conveners: Karen J. Heywood, Johan van der Molen
Fri, 23 Apr, 12:30–13:30 (CEST)
NET37
OS-event for all division members II
Convener: Meriel J. Bittner | Co-conveners: Karen J. Heywood, Johan van der Molen
Thu, 29 Apr, 18:00–19:00 (CEST)

OS1 – Ocean Circulation and Climate

Programme group scientific officer: Marcus Dengler

OS1.1 EDI

This session will focus on variability in the ocean and its role in the wider climate system using both observations and models. Areas to be considered will include both ocean heat uptake and circulation variability as well as exploring the use of sustained ocean observing efforts and models to make progress in understanding the ocean’s role in the climate system. More than 90% of the excess heat in the climate system has been stored in the ocean, which mitigates the rate of surface warming. Better understanding of ocean ventilation mechanisms, as well as the uptake, transport, and storage of oceanic heat are therefore essential for reducing the uncertainties on global warming projections. Circulation variability and connectivity, particularly from the South Atlantic to the North Atlantic and Arctic Ocean, are also of interest as well as how they are driven by local-, large- or global-scale processes or teleconnections. Sustained observations at sea are being made within a wide variety of programmes and are leading to significant advances in our ability to understand and model climate. Thus, this session will also explore ongoing and planned sustained ocean observing efforts and illuminate their roles in improving understanding of the ocean’s role in the climate system. For example, air-sea flux moorings are being maintained at select sites to assess models and air-sea flux fields. Deep temperature and salinity measurements are being made at time series moorings and will be made by deep Argo floats. Significant advances are also being made using Argo floats for biogeochemistry and carbon measurements. Such observations provide the means to develop linkages between sustained ocean observing and climate modelling. In conclusion, the session will consider key aspects of ocean variability and its climate relevance, as well as encouraging the use of observations and models to enhance understanding of these areas.

Convener: Simon Josey | Co-conveners: Léon Chafik, Damien Desbruyeres, Yavor Kostov, Iselin Medhaug
vPICO presentations
| Mon, 26 Apr, 09:00–12:30 (CEST), 13:30–15:00 (CEST)
OS1.2 EDI

The North Atlantic exhibits a high level of natural variability from interannual to centennial time scales, making it difficult to extract trends from observational time series. Climate models, however, predict major changes in this region, which in turn will influence sea level and climate, especially in western Europe and North America. In the last years, several projects have been focused on the Atlantic circulation changes, for instance OVIDE, RACE, OSNAP, and ACSIS. Another important issue is the interaction between the atmosphere and the ocean as well as the cryosphere with the ocean, and how this affects the climate.

Please note that while we hope to hold a session in the traditional format, we anticipate that some part or all of the session may be held online.

We welcome contributions from observers and modelers on the following topics:

-- climate relevant processes in the North Atlantic region in the atmosphere, ocean, and cryosphere
-- response of the atmosphere to changes in the North Atlantic
-- atmosphere - ocean coupling in the North Atlantic realm on time scales from years to centuries (observations, theory and coupled GCMs)
-- interpretation of observed variability in the atmosphere and the ocean in the North Atlantic sector
-- Comparison of observed and simulated climate variability in the North Atlantic sector and Europe
-- Dynamics of the Atlantic meridional overturning circulation
-- variability in the ocean and the atmosphere in the North Atlantic sector on a broad range of time scales
-- changes in adjacent seas related to changes in the North Atlantic
-- role of water mass transformation and circulation changes on anthropogenic carbon and other parameters
-- linkage between the observational records and proxies from the recent past

Co-organized by AS1/CL4
Convener: Richard Greatbatch | Co-conveners: Caroline Katsman, Monika Rhein, Bablu Sinha
vPICO presentations
| Fri, 30 Apr, 11:00–17:00 (CEST)
OS1.3 EDI

The rapid decline of the Arctic sea ice in the last decade is a dramatic indicator of climate change. The Arctic sea ice cover is now thinner, weaker and drifts faster. Freak heatwaves are common. On land, the permafrost is dramatically thawing, glaciers are disappearing, and forest fires are raging. The ocean is also changing: the volume of freshwater stored in the Arctic has increased as have the inputs of coastal runoff from Siberia and Greenland and the exchanges with the Atlantic and Pacific Oceans. As the global surface temperature rises, the Arctic Ocean is speculated to become seasonally ice-free by the mid 21st century, which prompts us to revisit our perceptions of the Arctic system as a whole. What could the Arctic Ocean look like in the future? How are the present changes in the Arctic going to affect and be affected by the lower latitudes? What aspects of the changing Arctic should observational, remote sensing and modelling programmes address in priority?
In this session, we invite contributions from a variety of studies on the recent past, present and future Arctic. We encourage submissions examining interactions between the ocean, atmosphere and sea ice, on emerging mechanisms and feedbacks in the Arctic and on how the Arctic influences the global ocean. Submissions with a focus on emerging cryospheric, oceanic and biogeochemical processes and their implications are particularly welcome.
The session promotes results from current Arctic programmes and discussions on future plans for Arctic Ocean modelling and measurement strategies, and encourages submissions on the first results from CMIP6 and the recently completed Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC). This session is cosponsored by the CLIVAR /CliC Northern Ocean Regional Panel (NORP) that aims to facilitate progress and identify scientific opportunities in (sub)Arctic ocean-sea-ice-atmosphere research.

Co-organized by AS2/BG4/CL4/CR4, co-sponsored by NORP
Convener: Yevgeny Aksenov | Co-conveners: Paul A. Dodd, Céline Heuzé, Krissy Reeve, Yufang Ye
vPICO presentations
| Thu, 29 Apr, 11:00–12:30 (CEST), 13:30–17:00 (CEST)
OS1.4 EDI

Observations and model simulations illustrate significant ocean variability and associated air-sea interactions in the tropical Atlantic basin from daily-to-decadal time scales. This session is devoted to the understanding of ocean dynamics in the tropical and subtropical Atlantic Ocean, its interaction with the overlying atmosphere from the equator to the mid-latitudes and its climate impacts on adjacent to remote areas.
Relevant processes in the ocean include upper and deep ocean circulation, eddies, tropical instability waves, warm pools, cold tongues and eastern boundary upwellings. We are interested in air-sea interactions related to both the seasonal cycle and the development of modes of variability from local to basin scale (e.g. the Meridional Mode, the Atlantic Niño, and the Benguela Niño). We welcome studies on wind variations related to the development of these modes, as well as studies on high-frequency events, such as marine heat waves, the Madden-Julian Oscillation, tropical cyclones and convective systems. Furthermore, we seek studies on climate change in the region, and also of the climatic impacts of change and variability on marine ecosystems. Finally, we are also interested in contributions examining the causes and impacts of systematic model errors in simulating the local to regional Atlantic climate.
Studies based on direct observations, reanalysis, reconstructions as well as model simulations are welcome.

Co-organized by AS2/CL4
Convener: Marta Martín-Rey | Co-conveners: Marie-Lou Bachelery, Peter Brandt, Noel Keenlyside, Alban Lazar
vPICO presentations
| Tue, 27 Apr, 09:00–12:30 (CEST)
OS1.5 EDI

The Indian Ocean is unique among the other tropical ocean basins due to the seasonal reversal of monsoon winds and concurrent ocean currents, lack of steady easterlies that result in a relatively deep thermocline along the equator, low-latitude connection to the neighboring Pacific and a lack of northward heat export due to the Asian continent. These characteristics shape the Indian Ocean’s air-sea interactions, as well as its variability on (intra)seasonal, interannual, and decadal timescales. They also make the basin and its surrounding regions, which are home to a third of the global population, particularly vulnerable to anthropogenic climate change: robust trends in heat transport and freshwater fluxes have been observed in recent decades in the Indian Ocean and Maritime Continent region and 2019 marked one of the largest Indian Ocean Dipole events on record. Advances have recently been made in our understanding of the Indian Ocean’s circulation, interactions with adjacent ocean basins, and its role in regional and global climate. Nonetheless, significant gaps remain in understanding, observing, modeling, and predicting Indian Ocean variability and change across a range of timescales.
This session invites contributions based on observations, modelling, theory, and palaeo proxy reconstructions in the Indian Ocean that focus on recent and projected changes in Indian Ocean physical and biogeochemical properties and their impacts on ecological processes, interactions and exchanges between the Indian Ocean and other ocean basins, as well as links between Indian Ocean variability and monsoon systems across a range of timescales. In view of the large 2019 event, contributions on the Indian Ocean Dipole mechanisms and climate impacts, with a particular focus on extreme events, are particularly sought. We also welcome contributions that address research on the Indian Ocean grand challenges highlighted in the recent IndOOS Decadal Review, and as formulated by the Climate and Ocean: Variability, Predictability, and Change (CLIVAR), the Sustained Indian Ocean Biogeochemistry and Ecosystem Research (SIBER), the International Indian Ocean Expedition 2 (IIOE-2), and the Year of the Maritime Continent (YMC) programs.

Co-organized by BG4/CL4
Convener: Caroline Ummenhofer | Co-conveners: Yan Du, Alejandra Sanchez-Franks, Jérôme Vialard
vPICO presentations
| Fri, 30 Apr, 09:00–12:30 (CEST)
OS1.6 EDI

The Southern Ocean is a key region for the vertical and lateral exchanges of heat, carbon, and nutrients, with significant past and potential future impacts on the global climate system. However, the role of the Southern Ocean as a sink of anthropogenic carbon and heat, and as a source of natural carbon remains uncertain. Indeed, observations of many aspects of this system are still sparse and the ability to model the complex dynamics governing the air-sea exchange, export and storage of heat and carbon is limited, resulting in large climate projection uncertainties.

To address these knowledge gaps the Southern Ocean has been the subject of recent large-scale observational, theoretical and modelling investigations by several national and international programmes, including SOCCOM, the UK ORCHESTRA and RoSES, and the H2020 programme SO-CHIC, complimented by the IODP and other drilling programmes. These and other large scale efforts such as the CMIP6 simulations have provided insight into the processes governing the Southern Ocean heat and carbon exchanges, their spatial patterns and trends on subannual, multi-decadal and millennial timescales, as well as their potential future modifications under a changing climate.

This session welcomes contributions dealing with the physical, biogeochemical and ecological processes driving the air-sea exchange, export, and storage of heat and carbon in the Southern Ocean under past, present, and future climates. These include (but are not limited to) interior ocean mixing, water mass transformation and transport pathways, the cycling of carbon and nutrients, as well as ocean-ice-atmosphere interactions and fluxes. The session will also discuss the wider implications of changing Southern Ocean heat and carbon exchanges for the lower latitudes and for the global climate.

Public information:
In addition to the official vEGU sessions, we are planning a joint discussion session (with OS1.7: Under cover: The Southern Ocean’s connection to sea ice and ice shelves) on Wednesday 28 April, at 13:30-15:30 CEST, where we will discuss in more depth topics arising from the sessions, such as the role of Southern Ocean circulation for the uptake and storage of heat and carbon, ecological and biogeochemical exchanges, ocean-ice interactions and the role of the Southern Ocean in wider climate. The discussion session is structured as a 1-hour plenary using zoom and moderated by the convenors, followed by a 1-hour informal exchange in break out groups using “wonder.me”. We especially encourage Early Career Researchers to participate and to use these informal sessions as an opportunity for networking with fellow Southern Ocean enthusiasts. The links to the rooms be displayed to attendees at the vPICO session. If you are a registered attendee but cannot attend the vPICO session please directly contact a convener for breakout session details.
Convener: Andrew Meijers | Co-conveners: Cara Nissen, Lavinia Patara, Christian Turney
vPICO presentations
| Wed, 28 Apr, 11:00–12:30 (CEST)
OS1.7 EDI

In recent years the interaction between the ocean and the cryosphere in the Southern Ocean has become a major focus in climate research. Antarctic climate change has captured public attention, which has spawned a number of research questions, such as: Is Antarctic sea ice becoming more vulnerable in a changing climate? What controls the inflow of warm water into ice shelf cavities and what is the impact of enhanced meltwater outflow? What role do ice processes play in nutrient upwelling on the shelf? Recent advances in observational technology, data coverage, and modeling provide scientists with a better understanding of the mechanisms involving ice-ocean interactions in the far South. Processes on the Antarctic continental shelf have been identified as missing links between the cryosphere, the global atmosphere and the deep open ocean that need to be captured in large-scale and global model simulations.

This session calls for studies on physical and biogeochemical interactions between ice shelves, sea ice and the ocean. The ice-covered Southern Ocean and its role in the greater Antarctic climate system are of major interest. This includes work on all scales, from local to basin-scale to circumpolar. Studies based on in-situ observations and remote sensing as well as regional to global models are welcome. We particularly invite cross-disciplinary topics involving physical and biological oceanography, glaciology or biogeochemistry.

Co-organized by BG4/CL4/CR4
Convener: Torge Martin | Co-conveners: Xylar Asay-Davis, Kaitlin Naughten
vPICO presentations
| Wed, 28 Apr, 09:00–10:30 (CEST)
CR7.2 EDI

THIS SESSION IS A MERGE OF 2 SESSIONS. PLEASE CHECK PUBLIC INFORMATION FOR MORE INFORMATION.
BELOW YOU FIND BOTH SESSION DESCRIPTIONS
Coupled modelling in the polar regions
In recent decades, the climate in the polar regions has undergone dramatic changes. Quantifying the individual contributions of Earth system components (cryosphere, ocean, atmosphere, and land) to the observed changes is challenging due to feedback between the components. Examples include (but are not limited to) ice shelf – ocean interactions (through basal melting and cavity geometry evolution) and elevation feedback (through surface mass balance). Hence, studies based on individual components of the Earth System have limited capacity to represent all relevant processes. This session aims to provide a platform for sharing coupled modelling experiences incorporating the cryosphere in the polar regions.
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Facilitating remote sensing applications across the terrestrial Arctic
We solicit both technical and scientific contributions from modelling studies in which feedback and emergent properties between the cryosphere and other Earth System components in polar regions are investigated, better understood, and possibly even quantified. In addition to application of coupled modelling to real world domains, contributions are also invited from idealised studies and intercomparisons, such as the Marine Ice Sheet – Ocean Intercomparison Project (MISOMIP).
Environmental changes in terrestrial ecosystems and coastal areas across the Arctic can only be fully addressed by using remote sensing observations and modelling. However, due to the multiscale complexity of the landscape, to limitations related to illumination and atmospheric conditions, bridging the gap between field and satellite observations remains a major challenge. Contributions may include recent advances in instrumentation and methodology for validation and calibration of remote sensing products, applications of joint use of in situ and satellite records to tackle science questions, demonstrate the utility of UAV for bridging the scale gap, progress for standardization (protocols) or reviewing challenges.
We specifically welcome contributions within the framework of T-MOSAiC aiming to coordinate activities that will both aid and benefit from MOSAiC (especially the modelling components) by extending the work to the lands surrounding the Arctic Ocean and to the northern communities.
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Public information:
We divide our session time slot into 4 parts:
(5min Introduction)
15:35 - 16:04 Presentations of "Coupled modelling in polar regions" (5min invited talk by Xylar Asay-Davis followed by 2min pitch talks of all authors)
16:04 - 16:16 2min vPICO talks of "Facilitating remote sensing applications across the terrestrial Arctic"
--- from 16:16 on individual text chat discussion with each author are possible in parallel windows ---
16:16 - 16:45 Discussion and open questions: Coupled modelling in the polar regions
16:45 - 17:00 Discussion on the status of T-MOSAIC: The final discussion for the remote sensing section will allow for additional questions (left open after the individual chats) and will specifically focus on the status of T-MOSAIC.
Co-organized by AS5/OS1
Convener: Konstanze Haubner | Co-conveners: Annett Bartsch, Rupert Gladstone, Jeffrey Kerby, Yoshihiro Nakayama, Shuting Yang, Gonçalo Vieira
vPICO presentations
| Wed, 28 Apr, 15:30–17:00 (CEST)
CR3.4 EDI

Ice shelves and tidewater glaciers are sensitive elements of the climate system. Sandwiched between atmosphere and ocean, they are vulnerable to changes in either. The recent disintegration of ice shelves such as Larsen B and Wilkins on the Antarctic Peninsula, current thinning of the ice shelves in the Amundsen Sea sector of West Antarctica, and the recent accelerations of many of Greenland's tidewater glaciers provide evidence of the rapidity with which those systems can respond. Changes in marine-terminating outlets appear to be intimately linked with acceleration and thinning of the ice sheets inland of the grounding line, with immediate consequences for global sea level. Studies of the dynamics and structure of the ice sheets' marine termini and their interactions with atmosphere and ocean are the key to improving our understanding of their response to climate forcing and of their buttressing role for ice streams. The main themes of this session are the dynamics of ice shelves and tidewater glaciers and their interaction with the ocean, atmosphere and the inland ice, including grounding line dynamics. The session includes studies on related processes such as calving, ice fracture, rifting and mass balance, as well as theoretical descriptions of mechanical and thermodynamic processes. We seek contributions both from numerical modelling of ice shelves and tidewater glaciers, including their oceanic and atmospheric environments, and from observational studies of those systems, including glaciological and oceanographic field measurements, as well as remote sensing and laboratory studies.

Co-organized by OS1
Convener: Inga Monika Koszalka | Co-conveners: Rachel Carr, Angelika Humbert, Adrian Jenkins, Nicolas Jourdain
vPICO presentations
| Tue, 27 Apr, 13:30–17:00 (CEST)
CR1.1 EDI

The largest single source of uncertainty in projections of future global sea level is associated with the mass balance of the Antarctic Ice Sheet (AIS). In the short-term, it cannot be stated with certainty whether the mass balance of the AIS is positive or negative; in the long-term, the possibility exists that melting of the coastal shelves around Antarctica will lead to an irreversible commitment to ongoing sea level rise. Observational and paleoclimate studies can help to reduce this uncertainty, constraining the parameterizations of physical processes within ice sheet models and allowing for improved projections of future global sea level rise. This session welcomes presentations covering all aspects of observation, paleoclimate reconstruction and modeling of the AIS. Presentations that focus on the mass balance of the AIS and its contribution towards changes in global sea level are particularly encouraged.

Public information:
Hi everyone, due to EGU technical difficulties, the session CR1.1 is delayed by 1 hour so will now start at 16:30 CET. It will take place via Zoom. Please enter here and click on the green button on the top right "Enter vPico Lounge":
Co-organized by CL4/OS1
Convener: Steven Phipps | Co-conveners: Florence Colleoni, Chris Fogwill, Taryn Noble, Yusuke Yokoyama
vPICO presentations
| Mon, 26 Apr, 15:30–17:00 (CEST)
CL4.7 EDI

The Arctic Realm is changing rapidly and the fate of the cryosphere, including Arctic sea ice, glaciers and ice caps, is a source of concern. Whereas sea ice variations impact the radiative energy budget, thus playing a role in Arctic amplification, the Greenland Ice Sheet retreat contributes to global sea level rise. Moreover, through various processes linking the atmosphere, ice and ocean, the change in the Arctic realm may modify the atmospheric and ocean circulation at regional to global scales, the freshwater budget of the ocean and deep-water formation as well as the marine and terrestrial ecosystems, including productivity. The processes and feedbacks involved operate on all time scales and it require a range of types of information to understand the processes, drivers and feedbacks involved in Arctic changes, as well as the land-ocean-cryosphere interaction. In this session, we invite contributions from a range of disciplines and across time scales, including observational (satellite and instrumental) data, historical data, geological archives and proxy data, model simulations and forecasts, for the past, present and future climate. The common denominator of these studies will be their focus on a better understanding of mechanisms and feedbacks on short to long time scales that drive Arctic and subarctic changes and their impact on climate, ocean and environmental conditions, at regional to global scales, including possible links to weather and climate outside the Arctic.

Co-organized by AS4/CR7/OS1
Convener: Marit-Solveig Seidenkrantz | Co-conveners: Anne de Vernal, Michal Kucera, Henrieka Detlef, Katrine Elnegaard Hansen
vPICO presentations
| Wed, 28 Apr, 09:00–11:45 (CEST)
CL4.31

The Arctic sea ice and high latitude atmosphere and oceans have experienced significant changes over the modern observational era. The polar climate is crucial for the Earth’s energy and water budget, and its variability and change have direct socio-economic and ecological impacts. Thus, understanding high-latitude variability and improving predictions of high latitude climate is highly important for society. Long-term variability in ocean and sea ice are the largest sources for predictability in high latitudes. Dynamical model predictions are not yet in the position to provide us with highly accurate predictions of the polar climate. Main reasons for this are the lack of observations in high latitudes, insufficient initialization methods and shortcomings of climate models in representing some of the important climate processes in high latitudes.

This session aims for a better understanding and better representation of the mechanisms that control high latitude variability and predictability of climate in both hemispheres from sub-seasonal to multi-decadal time-scales in past, recent and future climates. Further, the session aims to discuss ongoing efforts to improve climate predictions at high latitudes at various time scales (as e.g. usage of additional observations for initialization, improved initialization methods, impact of higher resolution, improved parameterizations, novel verification approaches) and potential teleconnections of high latitude climate with lower latitude climate. We also aim to link polar climate variability and predictions to potential ecological and socio-economic impacts and encourage submissions on this topic.

The session offers the possibility to present results from ongoing projects and research efforts on the topic of high-latitude climate variability and prediction, including, but not limited to, the WMO Year of Polar Prediction (YOPP), NordForsk-project ARCPATH, MOSAiC, and the H2020-projects APPLICATE, INTAROS, BlueAction, and KEPLER.

Co-organized by AS1/CR7/OS1
Convener: Neven Fuckar | Co-conveners: Yongqi Gao (deceased)(deceased), Helge Goessling, Torben Koenigk
vPICO presentations
| Fri, 30 Apr, 13:30–15:00 (CEST)
CL2.13

ENSO and its interactions with other tropical basins are the dominant source of interannual climate variability in the tropics and across the globe. Understanding the dynamics, predictability, and impacts of ENSO and tropical basins interactions, and anticipating their future changes are thus of vital importance for society. This session invites contributions regarding all aspects of ENSO and tropical basins interactions, including: dynamics, multi-scale interactions; low frequency, decadal and paleo variability; theoretical approaches; ENSO diversity; global teleconnections; impacts on climate, society and ecosystems; seasonal forecasting and climate change projections of ENSO and its tropical basins interactions. Studies aimed at understanding ENSO and its tropical basins interactions in models of a range of complexity are especially welcomed, including analysis of CMIP model intercomparisons.

Co-organized by AS1/NP2/OS1
Convener: Dietmar Dommenget | Co-conveners: Antonietta Capotondi, Daniela Domeisen, Eric Guilyardi
vPICO presentations
| Fri, 30 Apr, 13:30–15:00 (CEST)
CL3.1.3 EDI

In this session, we invite presentations that investigate CMIP6 (or other, similarly co-ordinated) simulations.

Analysis of the Sixth Coupled Model Intercomparison Project (CMIP6) is now well underway. Here, we focus on analyses of coordinated simulations undertaken through, or parallel to, the CMIP protocol, with a particular focus on historical simulations and future projections. We are particularly interested in analyses that involve a role for the North Atlantic region, either in evaluating/describing simulated/projected variability or in the North Atlantic’s remote effect on other regions. We are interested in (multi)model evaluation, mechanisms of variability, as well as impact analysis. Multimodel analyses are especially welcome as are critical comparisons between models and observations.

We invite presentations that investigate CMIP (or similarly co-ordinated) simulations on topics including, but not limited to, the following:

-o- The historical and future evolution of the Atlantic Meridional Overturning Circulation (AMOC)
-o- Projected changes in the strength and location of the jet stream
-o- Atlantic Multidecadal Variability (AMV), including future changes and the role of internally/externally forced variability
-o- Projections or mechanisms of changes in hurricane activity
-o- The drivers and impacts of Arctic ice melt
-o- The hydrological cycle and freshening of the North Atlantic, including “hosing” simulations
-o- Teleconnections between the North Atlantic and remote regions including over land

Co-organized by OS1
Convener: Matthew Menary | Co-conveners: Laura Jackson, Juliette Mignot, Jon Robson, Yohan Ruprich-Robert
vPICO presentations
| Thu, 29 Apr, 11:45–12:30 (CEST)

OS2 – Coastal Oceans, Semi-enclosed and Marginal Seas

Programme group scientific officer: Sandro Carniel

OS2.1 EDI

Contributions are invited on innovative observational, theoretical and modelling studies concerning physical processes in coastal and shelf seas. Processes can include hydrodynamics (e.g., waves, tides, river plumes, currents and Stokes drift, upwelling, eddies, density structures), transport of material (e.g., sediments, contaminants, litter, nutrients), and morphodynamics and sea-bed structure (e.g., evolution of bed forms, banks, Holocene-Antropogene strata or basin shape). Study areas are envisaged between the base of the shelf break and the seaward limit of the surf zone, including tidal basins. However, contributions on processes outside these geographical limits will be considered where they significantly influence processes within these limits. Equally, contributions on climate dynamics, biogeochemistry, and man-made structures will be considered where they significantly influence, or are significantly influenced by, the processes aimed at in this session. Special attention will be given to interactions between physics, biology and biogeochemistry and to global to local scaling of processes, their relative importance, and the representation of these transitions in models.

Convener: Alexander Osadchiev | Co-conveners: Huib E. de Swart, Andreas Lehmann, Julie D. Pietrzak, Johan van der Molen
vPICO presentations
| Wed, 28 Apr, 15:30–17:00 (CEST)
OS2.3 EDI

Oceanographic processes at coastal scales present a number of important differences with respect to deep water oceanography, which result in higher prediction errors. In shallow water coastal domains, the bottom topography exerts a strong control on the resulting wave/current fields and other factors need to be accounted for (stratification and mixing effects or land boundary condition). Moreover, the coupling between wind, waves, currents and sediments at limited scales, or even the choice of numerical strategy (nested meshes, finite-elements, etc.) may also play a critical role in the quality of the predictions. Coastal observations are therefore necessary to drive numerical models, combining in-situ data and satellite images. The advent of new satellite capabilities (resolution and sensors like for instance those of the Sentinel constellation) and new modelling advances (coupling, unstructured grids and boundary conditions) together with enhanced coastal observatories should lead to a qualitative advance of coastal oceanography. The introduction of Artificial Intelligence, Machine Deep Learning and Big Data techniques can speed up the required advances and facilitate applications.
These issues are even more relevant in a framework of changing climate, since coastal and transitional areas are strongly impacted by climate. Because of these reasons, it is timely to discuss recent advances in fields such as: coupled ocean-atmosphere-sediment modelling; hydrological, biogeochemical and geomorphological variability of coastal regions; aggregation of in-situ/satellite/numerical Big Data; criteria for optimising integrated coastal predictions and observatories. Building upon these challenges, we invite for this session presentations on satellite/in-situ measurements, coastal assimilation, metocean-riverine coupling, water/sediment/nutrient fluxes through coastal systems, operational predictions and observations and coastal error limits and uncertainties. These topics, emphasizing coastal variability (hydrodynamics, morphodynamics and bio-geochemical processes) and their interactions with coastal infrastructure/activities should conform a fruitful session for coastal ocean science, where we intend to organise a special collection of the best presentations for an EGU journal.

Convener: Agustín Sánchez-Arcilla | Co-conveners: Davide Bonaldo, Sandro Carniel, Manuel Espino Infantes, Joanna Staneva
vPICO presentations
| Thu, 29 Apr, 09:00–11:45 (CEST)
OS2.4 EDI

The session would like to overview recent developments and understanding, by observations and modelling, of the Southern European Seas (SES) general circulation, physical processes, biogeochemical interactions and their ecosystems. Themes of particular interest are: - Interaction of scales and processes in the SES: hydrodynamic and ecosystem interactions at multiple temporal and spatial scales (down to submesoscale), coastal processes and shelf-to-open sea interactions, straits dynamics, ocean response to atmospheric forcing, impact of environmental conditions on ecosystem functions from local to regional scales; - Assessing, understanding and predicting the potential impact of climate change in the SES: long term trends, occurrence of extreme events, development of downscaled models at basin and regional scales, novel approaches to model marine ecosystems, ecosystem functions and biodiversity; - Integrated Observing System in the SES: development of new sensors, scale of interests, development of advanced methodologies for upscaling local information, new satellite products, processes that need to be monitored, identification of data gaps (eg. observing system experiments); - Operational Oceanographic products in the SES: merging of observations and modelling products, downstream products development in the framework of the Mediterranean Sea Oceanography Network for GOOS (MONGOOS). Production and use of services for continuously advance in the scientific understanding and technological development in support to sustainable Blue Growth, SDGs implementation.
- Science-based Integrated management of the SES: support to Marine Spatial Planning and deployment of Marine Protected Areas , scenario studies, mapping of anthropogenic pressures, habitat and ecosystem services, potential support for nature-based solutions and/or sustainable exploitation of marine resource.

Convener: Gianmaria Sannino | Co-conveners: Arthur Capet, Vanessa Cardin, Alejandro Orfila, Katrin Schroeder
vPICO presentations
| Mon, 26 Apr, 09:00–12:30 (CEST)
HS10.2 EDI

This session provides a platform for transdisciplinary science that addresses the continuum of the river and its catchment to the coastal sea. We invite studies across geographical borders; from the source to the sea including groundwater, and across the freshwater-marine water transition, including estuaries, deltas and marshlands. The session particularly welcomes studies that link environmental and social science, addressing the impacts of climate change and extreme events and impact of human activities on water and sediment quality and quantity, hydromorphology, biodiversity, ecosystem functioning and services of River-Sea continua. Such a systems approach is required to develop solutions for sustainable management of River-Sea social-ecological systems.

We need to fully understand how River-Sea Systems function. How are River-Sea continua changing due to human pressures? What is the impact of processes in the catchment on coastal and marine systems function, and vice versa? How can we discern between human-induced changes or those driven by natural processes from climate-induced variability and extreme events? What will the tipping points of socio-ecologic system states be and what will they look like? How can we better characterise river-sea systems from the latest generation Earth observation to citizen science based observatories. How can we predict short and long term changes in River-Sea-Systems to manage them sustainably? What is the limit to which it is possible to predict the natural and human-influenced evolution of River-Sea-Systems? The increasing demand to jointly enable intensive human use and environmental protection in River-Sea Systems requires holistic and integrative research approaches with the ultimate goal of enhanced system understanding as the knowledge base for sustainable management solutions.

Co-organized by BG4/NH1/OS2
Convener: Jana Friedrich | Co-conveners: Debora Bellafiore, Dietrich Borchardt, Andrea D'Alpaos, Holly Michael, Michael Rode, Christian Schwarz, Claudia Zoccarato
vPICO presentations
| Mon, 26 Apr, 13:30–17:00 (CEST)
CL2.12

It has been shown that regional climate change interacts with many other man-made perturbations in both natural and anthropogenic coastal environments. Regional climate change is one of multiple drivers, which have a continuing impact on terrestrial, aquatic and socio-economic (resp. human) environments. These drivers interact with regional climate change in ways, which are not completely understood. Recent assessments all over the world have partly addressed this issue (e.g. Assessment of Climate Change for the Baltic Sea region, BACC (2008, 2015); North Sea Climate Change Assessment, NOSCCA (2011); Canada’s Changing Climate Report, CCCR (2019)).
This session invites contributions, which focus on the connections and interrelations between climate change and other drivers of environmental change, be it natural or human-induced, in different regional seas and coastal regions. Observation and modelling studies are welcome, which describe processes and interrelations with climate change in the atmosphere, in marine and freshwater ecosystems and biogeochemistry, coastal and terrestrial ecosystems as well as human systems. In particular, studies on socio-economic factors like aerosols, land cover, fisheries, agriculture and forestry, urban areas, coastal management, offshore energy, air quality and recreation, and their relation to climate change, are welcome.
The aim of this session is to provide an overview over the current state of knowledge of this complicated interplay of different factors, in different regional seas and coastal regions all over the world.

Co-organized by BG4/HS13/OS2
Convener: Marcus Reckermann | Co-conveners: Ute Daewel, Helena Filipsson, Markus Meier, Markus Quante
vPICO presentations
| Fri, 30 Apr, 15:30–17:00 (CEST)

OS3 – Ocean Biogeochemistry and Biology

Programme group scientific officer: Peter Landschützer

OS3.1 EDI

The net amount of CO2 that is taken up and stored by the ocean is a major driver of the rate of climate change but also affects biogeochemical stressors such as ocean acidification. Alongside the gradual increase in the ocean’s anthropogenic carbon inventory, the uptake, storage, and transformation of carbon display a large degree of spatial and temporal variability. In this session, we wish to shine a light on such trends and variability in ocean carbon dynamics, focusing on underlying processes and the consequences for marine ecosystems in the recent past, present, and future.

We are specifically interested in temporal changes in the fluxes and inventories of natural and anthropogenic inorganic carbon, as well as other marine carbonate system parameters, such as alkalinity, pCO2, and pH. We welcome contributions with a focus on the open or coastal ocean, surface, and/or ocean interior, based on observations, models, or theory and with a global or regional focus. Observational and multi-model constraints on marine carbon dynamics are particularly welcome, as are studies based on GLODAP or SOCAT data and insights from the recent Coupled Model Intercomparison Project Phase 6 (CMIP6) simulations.

Public information:
We are also organizing a Social Mixer in the evening after our session. You'll have the opportunity to meet up and connect with new and old peers from our field. You can have a picnic or sit by the beach or a campfire and talk about science and other things in themed and open sub-rooms on GatherTown.

Please mark April 27th from 6 pm to 7 pm in your calendars for that.

Access link:
https://gather.town/app/fchCweWz7a8C92p3/OS3.1_BG4.11_social
Password: ocean-carbon
Including OS Division Outstanding ECS Award Lecture 2020
Co-organized by BG4
Convener: Lydia Keppler | Co-conveners: Jens Daniel Müller, Lester Kwiatkowski
vPICO presentations
| Tue, 27 Apr, 13:30–17:00 (CEST)
OS3.3 EDI

Due to the growing pressures on marine resources and the ecosystem services demand, the interest of scientific and politic world is moving to ensure marine ecosystems conservation and environmental sustainable development providing policies to meet the UN 2030 Agenda Goal 14 in order to “Conserve and sustainably use the oceans, seas and marine resources for sustainable development”. To act against the decline of ocean health and to create a framework of stakeholders, the UN proposed the establishment of the “Decade of Ocean Science for Sustainable Development” able to bring regional knowledge and priorities together in an international action plan. Anthropogenic activities could have an impact on the marine environment and affect the ecosystem equilibrium. The marine environment is a dynamic, sensitive and fragile area in which it is advantageous to apply new methodologies and observing methods to increase the quantity and quality of the data. Since ocean dynamics affect the dispersion of pollutants such as chemicals, plastics, noise and invasive species, the ecosystems status should be analyzed through the study of abiotic variables distribution at a proper spatio-temporal scale. To analyze the ocean environmental quality, a large amount of data obtained by global observation systems (e.g. GOOS, EMODNET) is needed, which requires the development of cost-effective technologies for integrated observing systems and to support the study of, e.g., biological variables. The session focuses on marine ecosystems, technological developments for the study of abiotic and biotic factors, with a focus on anthropogenic impacts. Multidisciplinary approaches using data coming from multiple sources are encouraged. Integration of mathematical models, in-situ and remote observations is suggested with the aim to develop methods, technologies and best practices to maintain, restore and monitor biodiversity and to guarantee sustainable use of marine resources. The following topics will be discussed: effects of pollution on biota considering their natural and anthropogenic sources; global change effects on marine ecosystem; new technology development; advanced methods for collection, data processing, and information extraction; benthic and pelagic community dynamics; economic evaluation of natural capital.

Convener: Marco Marcelli | Co-conveners: Roberta Ferretti, Xiaoxia Sun, Markus Weinbauer
vPICO presentations
| Fri, 30 Apr, 09:00–10:30 (CEST)
BG4.2 EDI

The coastal ocean has been increasingly recognized as a dynamic component of the global carbon budget. This session aims at fostering our understanding of the roles of coastal environments and of exchange processes, both natural or perturbed, along the terrestrial / coastal sea / open ocean continuum in global biogeochemical cycles. During the session recent advancements in the field of coastal and shelf biogeochemistry will be discussed. Contributions focusing on carbon and nutrient and all other element's cycles in coastal, shelf and shelf break environments, both pelagic and sedimentary, are invited.

This session is multidisciplinary and is open to observational, modelling and theoretical studies in order to promote the dialogue. The session will comprise subsections on coastal carbon storage, and on benthic biogeochemical processes.

Co-organized by OS3
Convener: Helmuth Thomas | Co-conveners: Alberto V. Borges, Arthur Capet, Katarzyna Koziorowska-Makuch, Craig Smeaton
vPICO presentations
| Tue, 27 Apr, 13:30–17:00 (CEST)
BG2.8 EDI

Reliable information on past environmental and climatic conditions is crucial for understanding the evolution of life and the Earth System as a whole. Skeletal components of marine or aquatic organisms are among the most important and widely-used natural archives capturing information about the environment and fluid chemistry during precipitation in the form of geochemical signatures and/or specific mineralogies or micromorphologies. Over the past decades, a refined understanding of (bio)mineralisation, together with the development of new isotopic and elemental proxies (e.g. clumped isotopes Δ47, boron isotopes δ11B, or elemental ratios such as Li/Mg), has led to numerous breakthroughs in palaeoclimate research (e.g. on the evolution of seawater chemistry, causes and consequences of mass extinctions, or greenhouse vs. icehouse climate sensitivities). Simultaneously, geochemical, petrographic and crystallographic approaches have brought novel insights into (bio)mineral formation processes and alteration pathways of a variety of organisms. Critically, however, our knowledge of the incorporation of elements into the crystal lattice, and the quality and reliability of extracted climatic and environmental records, depends on careful proxy calibrations, and evaluation of secondary controls such as kinetic or vital effects and diagenetic influences.

This session seeks contributions on geochemical proxy development, including but not limited to new proxies, calibrations, modelling frameworks, and analytical or methodological advances. We invite experimental and observational studies dealing with biogenic but also inorganic mineral precipitation, transformation and alteration, including interface geochemistry, geomicrobiology or new perspectives on biomineralisation from culturing of calcifying organisms. We also welcome examples on how mechanistic understanding of marine or terrestrial carbonates and/or application of novel approaches results in an improved understanding of the global carbon(ate) cycle and Earth history. The aim of this session is to synthesize recent advances in geochemistry and (bio)mineralisation to further palaeo-proxy development and application that will result in a comprehensive understanding of past global changes.

Co-organized by CL5.1/OS3/SSP1
Convener: Hana Jurikova | Co-convener: Michael Henehan
vPICO presentations
| Wed, 28 Apr, 14:15–15:00 (CEST)
BG4.5 EDI

Biological and ecological experimental studies in laboratory and nature, and their applications to the paleo- and future understanding of marine environments

In order to discuss Earth marine realms and answer questions about biotic evolution and ecosystem functioning in the Past, Present and Future, scientists try to take various laboratory- or natural-based experimental approaches. This includes experiments controlling environmental variables, experiments with stable or radioactive isotopic biomarkers, breeding experiments, genetic analyses (e.g. ancient DNA), or so-called natural laboratories (e.g. the Lessepsian invasion via the Suez Canal or natural CO2 vents functioning as ocean acidification analogues). Altogether, they unriddle faunal and ecosystem functional responses to changing connectivity patterns, habitat change or global change threats. These experimental approaches are effective to make clear how biotic evolution takes place in nature, how ecosystems also act as functional labs and how Earth systems have moved and can move dynamically. They enable us to make more robust projections into the future or decipher past ecosystem trajectories with potential analogues to future change. In this session we welcome contributions that use experimental approaches in this context, but also discussing biogeochemical proxies that fix information of past environmental change during biomineralization in calcareous or siliceous tests.

Co-organized by OS3, co-sponsored by JpGU
Convener: Petra Heinz | Co-conveners: Hiroshi Kitazato, Christiane Schmidt, Takashi Toyofuku
vPICO presentations
| Thu, 29 Apr, 11:00–12:30 (CEST)
AS4.13 EDI

Ocean-atmosphere flux exchanges of biogeochemically active constituents have significant impacts on global biogeochemistry and climate. Increasing atmospheric deposition of anthropogenically-derived nutrients (e.g., nitrogen, phosphorus, iron) to the ocean influences marine productivity and has associated impacts on oceanic CO2 uptake, and emissions to the atmosphere of climate active species (e.g., nitrous-oxide (N2O), dimethyl-sulfide (DMS), marine organic compounds and halogenated species). Over the past decades, emission reductions for air pollution abatement has also resulted in changes in precipitation, cloud and aerosol chemical composition, and in atmospheric deposition of anthropogenically derived nutrients to the ocean, affecting atmospheric acidity and atmospheric deposition to ecosystems. Atmospheric inputs of other toxic substances (e.g., lead, mercury, cadmium, copper, and persistent organic pollutants) into the ocean are also of concern for their impact on ocean ecosystem health. In turn, oceanic emissions of reactive species and greenhouse gases influence atmospheric chemistry and global climate, and induce potentially important chemistry-climate feedbacks. While advances have been made by laboratory, field, and modelling studies over the past decade, we still lack understanding of many of the physical and biogeochemical processes linking atmospheric acidity, atmospheric deposition, nutrient availability, marine biological productivity, and the biogeochemical cycles governing air-sea fluxes of these climate active species.

This session will address the atmospheric deposition of nutrients and toxic substances to the ocean, their impacts on ocean biogeochemistry, and also the ocean to atmosphere fluxes of climate active species and potential feedbacks to climate. We welcome new findings from measurement programmes (in-situ and remote sensing), process studies, and atmospheric and oceanic numerical models.
This session is jointly sponsored by GESAMP Working Group 38 on ‘The Atmospheric Input of Chemicals to the Ocean’, the Surface Ocean-Lower Atmosphere Study (SOLAS), and the International Commission on Atmospheric Chemistry and Global Pollution (ICACGP).

Co-organized by BG4/OS3, co-sponsored by SOLAS and iCACGP/IGAC
Convener: Parvadha Suntharalingam | Co-conveners: Robert Duce, Maria Kanakidou, Arvind Singh, Andreas Tilgner
vPICO presentations
| Thu, 29 Apr, 13:30–14:15 (CEST)

OS4 – Global ocean processes and oceanographic techniques

Programme group scientific officer: Aida Alvera-Azcárate

OS4.1 EDI

We welcome submissions on all aspects of tides in the ocean, atmosphere and solid Earth, from regional to global scales and covering all time scales on Earth and other planets. Tides impact many Earth system processes such as ocean mixing, global ocean circulation, ice sheet dynamics and biogeochemical processes. Tides interacting with storm surges and sea level rise can cause coastal flooding, and harnessing of tidal energy can provide a source of renewable energy. Accurate tide models are necessary for the analysis of satellite gravimetry and altimetry data, especially in light of the upcoming Surface Water Ocean Topography (SWOT) mission.
We encourage contributions on progress in numerical modelling of both surface and internal tides and assessments of their accuracy, observations of long-term changes in tides and tidal processes on global to regional scales, insights on tidal variability from global geodetic observing techniques, and research into the role of tides in shaping Earth’s evolutionary processes. We also invite submissions on tidal dynamics in estuaries, rivers and lakes.

Public information:
Please note that the first block of this session shares the same Zoom link as OS2.3. The first block follows straight on from OS2.3 and if you join the session early you will be joining the breakout chats of the previous session.
Co-organized by G3/HS13/NH5
Convener: Sophie-Berenice Wilmes | Co-conveners: Michael Schindelegger, Stefan Talke, Joanne Williams
vPICO presentations
| Thu, 29 Apr, 11:45–12:30 (CEST), 13:30–15:00 (CEST)
OS4.2

We invite presentations on ocean surface waves, and wind-generated waves in particular, their dynamics, modelling and applications. This is a large topic of the physical oceanography in its own right, but it is also becoming clear that many large-scale geophysical processes are essentially coupled with the surface waves, and those include climate, weather, tropical cyclones, Marginal Ice Zone and other phenomena in the atmosphere and many issues of the upper-ocean mixing below the interface. This is a rapidly developing area of research and geophysical applications, and contributions on wave-coupled effects in the lower atmosphere and upper ocean are strongly encouraged.

Co-organized by NH5/NP7
Convener: Alexander Babanin | Co-conveners: Francisco J. Ocampo-Torres, Miguel Onorato, Fangli Qiao
vPICO presentations
| Tue, 27 Apr, 13:30–17:00 (CEST)
OS4.3

Advanced remote sensing capabilities have provided unprecedented opportunities for monitoring and studying the ocean environment as well as improving ocean and climate predictions. Synthesis of remote sensing data with in situ measurements and ocean models have further enhanced the values of oceanic remote sensing measurements. This session provides a forum for interdisciplinary discussions of the latest advances in oceanographic remote sensing and the related applications and to promote collaborations.

We welcome contributions on all aspects of the oceanic remote sensing and the related applications. Topics for this session include but are not limited to: physical oceanography, marine biology and biogeochemistry, biophysical interaction, marine gravity and space geodesy, linkages of the ocean with the atmosphere, cryosphere, and hydrology, new instruments and techniques in ocean remote sensing, new mission concepts, development and evaluation of remote sensing products of the ocean, and improvements of models and forecasts using remote sensing data. Applications of multi-sensor observations to study ocean and climate processes and applications using international (virtual) constellations of satellites are particularly welcome.

Convener: Aida Alvera-Azcárate | Co-conveners: Craig Donlon, Christine Gommenginger, Guoqi Han, Tong Lee
vPICO presentations
| Fri, 30 Apr, 13:30–17:00 (CEST)
OS4.4 EDI

NEMO (Nucleus for European Modelling of the Ocean) is a state-of-the-art modelling framework of the ocean that includes components for the ocean dynamics, the sea-ice and the biogeochemistry, so as a nesting package allowing to set up zooms and a versatile data assimilation interface (see https://www.nemo-ocean.eu/).
NEMO is used by a large community in Europe and world-wide (~200 projects, ~100 publications each year) covering a wide range of applications : oceanographic research, operational oceanography, seasonal forecast and climate projections.
NEMO is in particular used in 6 Earth System Models within CMIP6 and in Copernicus Marine Services (CMEMS) model-based products.

This session will provide a forum to properly address the new scientific advances in numerical modelling of the ocean and their implication for NEMO developments associated with:
• Ocean dynamics at large to coastal scales, up to 1km resolution ;
• Ocean biogeochemistry
• Sea-ice
• New numerical schemes associated to energy conservation constraints
• High performance computing challenges and techniques

The session will cover both research and operationnal activities contributing to new analysis, ideas and developments of ocean numerical models.
Presentations of results based on new NEMO functionalities and new NEMO model configurations are welcome.

Co-organized by CL4/ESSI2, co-sponsored by CMEMS
Convener: Claire Levy | Co-conveners: Mike Bell, Jerome Chanut, Julien Le Sommer, Doroteaciro Iovino
vPICO presentations
| Mon, 26 Apr, 15:30–17:00 (CEST)
OS4.6 EDI

The Copernicus Marine Environment Monitoring Service (CMEMS) provides regular and systematic reference information on the physical and biogeochemical states (including sea-ice and sea state) of the global ocean and the European regional seas. This capacity encompasses the description of the current ocean state (analysis and near-real time observations), the prediction of the ocean state a few days ahead (forecast), and the provision of consistent retrospective data records for recent decades (reanalyses and reprocessed datasets). CMEMS provides a sustainable response to private and public user needs, for academic, operational and private-sector activities and to support policies. After a first phase during 2014-2020 (CMEMS1), the Copernicus Marine Service enters a new phase covering 2021-2027 (CMEMS2).

The session will first focus on main achievements of CMEMS1.   This includes CMEMS activities on ocean modelling and coupling with other components of the climate system; data assimilation; processing of observations, impact and design of in-situ and satellite observing systems, data science; verification, validation and uncertainty estimates of CMEMS products; monitoring and long-term assessment of the ocean physical and biogeochemical states.  Presentations dealing with the use and impact of CMEMS products for downstream applications (including support to policies and directives) are also welcome. 

The session will also address research activities that are required to maintain a state-of-the-art and user responsive CMEMS and prepare CMEMS long-term evolutions in CMEMS2:   pan-European coastal zone monitoring, coupling with coastal systems and rivers, marine biology including higher trophic level modelling, Arctic ocean monitoring and forecasting and uptake of future Sentinel missions, air/sea CO2 fluxes and carbon uptake, long-term regional ocean projections both for physics and biogeochemistry, digital oceans, big data and data science (AI, machine learning, etc).

Presentations are not limited to research teams directly involved in CMEMS and participation from external teams is strongly encouraged (e.g. from H2020 projects relevant to CMEMS and downstream applications).

Convener: Angelique Melet | Co-conveners: Ciavatta Stefano, Emanuela Clementi, Pierre De Mey, Roshin Pappukutty Raj
vPICO presentations
| Wed, 28 Apr, 09:00–15:00 (CEST)
OS4.7 EDI

Marine pollution, such as natural and anthropogenic oil slicks, are of great concern. Surface oil slicks become a great hazard if they reach coastal or sea ice infested areas. Lower concentration levels of submerged substances, e.g., from produced water releases, can have a harmful effect on marine organisms in the long term. Operational ocean surveillance relies heavily on remote sensing data for detection, and ocean circulation models are commonly used to forecast and evaluate drift patterns and concentration changes. Localization, monitoring and slick redistribution information from remote sensing techniques is essential for a fast response and effective clean-up operation. Mapping of submerged substances relies more on ocean circulation modeling and in-situ measurements. Surveillance is still manual-labor intensive, though increased availability of free remote sensing images through, e.g. the Sentinel satellites, has opened up possibilities for developments of automated and semi-automated techniques for oil slick detection, characterization and tracking.
Within this session we welcome contributions covering all aspects of circulation and drift modelling for marine pollution as well as further developments on ocean surveillance using a range of satellites, including but not limited to synthetic aperture radar and optical sensors. Submissions with a focus on observation-model synthesis and interdisciplinary studies are particularly encouraged.

Convener: Malin Johansson | Co-conveners: Göran Broström, Oscar Garcia, Cathleen Jones