EGU2020-3761
https://doi.org/10.5194/egusphere-egu2020-3761
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Aircraft campaigns in support of the North Atlantic Climate System Integrated Studies (ACSIS)

Alexander Archibald1 and the The NERC ACSIS Team*
Alexander Archibald and the The NERC ACSIS Team
  • 1University of Cambridge, Department of Chemistry, Cambridge, United Kingdom of Great Britain and Northern Ireland (ata27@cam.ac.uk)
  • *A full list of authors appears at the end of the abstract

The North Atlantic is witnessing major changes during the Anthropocene. These include changes in the physical climate system: in ocean and atmosphere temperatures and circulation; in sea ice thickness and extent; and in atmospheric composition, where ozone, ozone precursors and aerosols have undergone significant changes over the last few decades. Changes in aerosols over the North Atlantic have been linked to changes in sea surface temperatures (SST) and North Atlantic climate variability. A long-term research project, The North Atlantic Climate System Integrated Study (ACSIS), involving data collection and interpretation, has begun to better understand the processes and composition-climate interactions associated with these changes. Here we report on one of the major observational components of the ACSIS programme which involves repeated measurements of the composition of the North Atlantic using the NERC FAAM BAe146. To date six campaigns have taken place including three which coincided with the NASA ATom campaigns (2-4). 


In this presentation we will discuss the rationale for the aircraft project and recent results including the observation of transport of biomass burning plumes into the North Atlantic that are estimated to have originated from fires sampled as part of the NASA FIREX campaigns during the summer of 2019. We will highlight results from an intercomparison with the NASA DC-8 during our second campaign and ATom 3, which reveal good agreement in measurements of O3, CO and NOx between the two aircraft but large differences in measurements of non-methane VOCs, and we will summarise our results to-date including the comparison against chemical transport models. 

 

The NERC ACSIS Team:

Doug Anderson; Rebecca Carling; David Sproson; Hannah Price; Samuel Cliff; Dominica Pasternak; Chris Reed; Stephane Baguitte; Graeme Nott; Freya Squires; James Lee; Simone Andersen; Marvin Shaw; Huihui Wu; Emily Matthews; Tom Bannan; Mike Flynn; Nick Marsden; James Allan; Paul Williams; Grace Ronnie;

How to cite: Archibald, A. and the The NERC ACSIS Team: Aircraft campaigns in support of the North Atlantic Climate System Integrated Studies (ACSIS), EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-3761, https://doi.org/10.5194/egusphere-egu2020-3761, 2020

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