The 20th AeroCom / 9th AeroSAT workshops 2021

will be held as virtual web meeting (due to COVID-19)
Oct 11-15, 2021

Registration and submission for contributions (on this website)
is open from  June 1, 2021 to August 15, 2021.


planned sessions at this year's workshop are

  • Commission on constraining aerosol properties
  • Aerosols in simple climate models
  • Aerosol typing , the path to OPAC2?
  • Science questions from latest IPCC report, chapter 6 (Vaishali, Sophie?)
  • BC in wildfires, Smoke
  • Historical EF, RCMIP, RFMIP, AerChemMIP…
  • Update from CONSTRAIN, FORCES

With your registration you are invited to submit requests for
main (15 slides) contributions (give title and abstract) and/or
minor (5 slide 'poster') contributions (give title and abstract).
(please reregister in case of many contributions, as only one
contribution is accepted with a registration)

expect a program by the end of August 2021.


info of last year's (2020) meeting can be found are

Initiates file downloadprogram
Initiates file downloadparticipant list 
Initiates file downloadabstracts

presentations of the most recent and all previous
meetings can be accessed via the AeroCom website



The primary objective of AeroCom meetings is to share and participate in efforts
to untangle the complexity in bottom-up aerosol component modules
in global modeling. Better process understanding is addressed through either
common experiments with harmonized input, assumptions and parameterizations
or data constraints from observations. The data aspect is also the major reason
to co-locate AeroCom and AeroSAT for exchange on data potential and data needs.


(other) key AeroCom topics are

- history of Aerosol Forcing 2014-1850  (what is anthropognic? what in natural?) in AeroCom/AerChemMIP
- how do models simulate natural aerosol (dust and seasalt components have large diversities!)
- indirect forcing and observational constraints (e.g. what we learn from volcanic cases or satellite statistics)
- evaluations to observations (satellite data / ground / planes)  ?    (consistency in anomalies/trends ?)
- unresolved issues (for phase IV?) : water uptake / size / natural aerosol / transport via tracers?
- discuss strategies to improve global aerosol models
- understand aerosol impact on climate evolution


The primary purpose of the AeroSAT meeting is to assess the state-of-the-art
of satellite aerosol retrievals and products, brainstorm ideas, and develop
consensus as much as possible. AeroSAT is designed as a meeting of experts.
So, as is our practice, the meeting format will feature brief overview talks on key issues, occasional updates on specific new developments, chairperson-presented
discussion points, and ample time for discussion, Thus,
presentations on
individual scientific work are deferred to poster-presentations.
Oral seed presentations at the start of each session are by invitation
- to provide a broader overview
- to introduce new approaches and
- to stimulate subsequent discussions on related issues and challenges


(other) key AeroSat topics are

- new elements/opportunities in/from remote sensing
- climate data records (are they useful/accurate enough? for AeroCom? how can they be improved?)
- pixel uncertainty (have they helped in data assimilations?)
- aerosol typing (can we agree on definitions? on quantitative (optics?) measures? interpretive enough for forward and inverse modeling?)
- aerosol indirect effects (how best to use satellite data relationships to constrain aerosol-cloud interaction processes and modeling?)
- AeroSAT experiments
- best practices for gridded level 3 data

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