This session has been created from sessions AS3.31 ‘Radiative effects and global aerosol forcing estimates of natural and anthropogenic aerosols’ (Convenors: Cathrine Lund Myhre, Elisabeth Andrews, Andreas Petzold, Bjørn Samset, Michael Schulz) and session AS3.32 ‘Natural Aerosols from Pre-Industrial to Present Day and into the Future’ (Convenors: Catherine Scott, Stephanie Fiedler, Kerstin Schepanski, Hugh Coe, Douglas Hamilton).

Aerosol radiative effects are an important aspect of the climate system that have both anthropogenic and natural contributions. This broad session focuses on the life cycle and radiative effects of all aerosol species present in the atmosphere.

One key topic is the radiative properties and effects of aerosols (e.g. black and brown carbon, mineral dust, biomass burning and hygroscopic aerosols) and model evaluation using aerosol observations. Today, ever more high quality data of aerosol optical properties, aerosol humidification, size distributions, aerosol light absorption and aerosol extinction vertical profiles have become available through international cooperation such as ACTRIS, GAW and NOAA networks. At the same time exhaustive global aerosol model results from multiple groups have been assembled in the AeroCom database, and rapid developments are being made in advance of CMIP6.

A better understanding of the role of natural aerosols in the atmosphere is essential for accurately determining anthropogenic radiative forcing and the climate response. In this session we will explore what we consider to be natural aerosols (i.e., primary aerosols and those formed from precursor gases emitted by natural sources, such as: wildfire, dust, volcanoes and the marine and terrestrial biospheres) and what we can observe about them in today’s atmosphere. Crucial questions include:
- How can we distinguish between truly natural aerosols and those whose emissions or formation are influenced by anthropogenic activities?
- How have the contributions of natural aerosols to atmospheric composition changed over time?
- How well do we understand the lifecycle of natural aerosols in the atmosphere in the absence of anthropogenic influence?
- Can we identify any pristine environments in the present day that can help us understand the pre-industrial atmosphere?
- How well are natural aerosols represented in Earth System Models and which observations can be used to evaluate them?

We welcome contributions relating to the use of observations and/or modelling to inform us about past, present-day and future aerosol-climate interactions.

Convener: Cathrine Lund Myhre | Co-conveners: Andreas Petzold, Bjorn H. Samset, Michael Schulz, Catherine Scott, Stephanie Fiedler, Kerstin Schepanski, Hugh Coe
| Fri, 12 Apr, 14:00–15:45
Room 0.31
| Attendance Fri, 12 Apr, 10:45–12:30
Hall X5

Attendance time: Friday, 12 April 2019, 10:45–12:30 | Hall X5

Chairperson: Catherine Scott Stephanie Fiedler Bjorn Samset
X5.371 |
Luis Suarez-Salas, Rene Estevan, Jose Flores, Yamina Silva, and Yessica Bendezu
X5.372 |
Julliana Freire, Karla Longo, Saulo Freitas, Arlindo Da Silva, Andrea Molod, Jelena Marshak, and Caio Coelho
X5.373 |
Assessment of Aerosol Properties and their Relationships with Meteorological Parameters over Lahore in Pakistan
Salman Tariq and Zia ul-Haq
X5.374 |
Nataly Chubarova, Elizaveta Androsova, Elena Volpert, Alexander Kirsanov, Olga Popovicheva, Alexei Ivanov, Irina Eremina, and Gdali Rivin
X5.375 |
Martina Klose, Carlos Pérez García-Pando, Paul Ginoux, Ron Miller, and Adrien Deroubaix
X5.376 |
Silvia Henning, Andrea Ba, Leighton Regayre, Christian Tatzelt, Alireza Moallemi, Robin Modini, Sebastian Landwehr, Conor Bolas, Neil Harris, Martin Schnaiter, Frank Stratmann, Josef Dommen, Daniel Rosenfeld, Urs Baltensperger, Martin Gysel, Ken Carslaw, and Julia Schmale
X5.377 |
Marios Bruno Korras Carraca, Vasileios Pappas, Nikolaos Hatzianastassiou, Ilias Vardavas, and Christos Matsoukas
X5.378 |
Carlos Diaz, Veronique Pont, Fabien Solmon, and Catherine Liousse
X5.379 |
Dong Yeong Chang, Jongmin Yoon, Jos Lelieveld, Andrea Pozzer, Jhoon Kim, and Seong Soo Yum
X5.380 |
Katarzyna Dziembor, Zygmunt Klusek, Tomasz Petelski, Piotr Markuszewski, Przemysław Makuch, Iwona Wróbel-Niedźwiecka, Jacek Piskozub, Małgorzata Kitowska, and Violetta Drozdowska
X5.384 |
Dirk Olivié, Michael Schulz, Øyvind Seland, Alf Kirkevåg, Twan van Noije, Tommi Bergman, Declan O'Donnell, Martine Michou, Pierre Nabat, Ken Carslaw, Chris Dearden, Mohit Dalvi, Fiona O'Connor, Ramiro Checa-Garcia, and Yves Balkanski
X5.385 |
Zachary McGraw and Trude Storelvmo
X5.386 |
Maciej Jefimow, Joanna Strużewska, and Jacek Kamiński
X5.387 |
Direct Radiative Effect of Natural and Anthropogenic Aerosols and their Vertical Profile based on Max-Planck Aerosol Climatology (MACv2)
Vasileios Pappas, Nikolaos Hatzianastassiou, Christos Matsoukas, Stefan Kinne, and Ilias Vardavas
X5.388 |
Gloria Titos, María A. Burgos, Elisabeth Andrews, and Paul Zieger