Aerosol_cci legacy

Thomas Popp , Gerrit de Leeuw, Simon Pinnock

International aerosol community in 2010

•  Growing community •  with aerosol specific sensors in the last decade, but

also use of non-specific sensors for aerosols •  with growing number of algorithms, variables

•  Some bi-lateral collaboration

•  Situation in Europe •  many small groups working on aerosol retrievals •  little coordination •  few algorithms at competitive level

Unifying the European aerosol (retrieval) community

Thomas Popp, Gerrit de Leeuw, Simon Pinnock, Miriam Kosmale, Larisa Sogacheva, Pekka Kolmonen, Gareth Thomas, Adam Povey, Caroline Poulson, Peter North, Andreas Heckel, Lars Klüser, Virginie Capelle, Lieven Clarisse, Sophie Vandenbussche, Oleg Dubovik, Pavel Litvinov, Christine Bingen, Charles Robert, Jacques Descloitres, Marco Vountas, Luca Lelli, Linlu Mei, Stefan Kinne, Michael Schulz, Jan Griesfeller, Kerstin Stebel, Christoph Brühl, David Neubauer, Pepijn Veefkind, Gijsbert Tilstra, Yong Xue, Yves Govaert, Jürgen Fischer, Martin de Graaf

Aerosol_cci > Thomas Holzer-Popp > ESA Living Planet Symposium, Bergen, 1 July 2010

slide 4

Consistent 17-year aerosol record

•  tremendeous improvement of European algorithms to competitive level

•  create consistent 17-year multi-sensor long-term time series of total and fine-mode AOD

•  user case studies provide critical evaluation of products

FMA

OD

FM

AO

D

Year

ATSR ADV v2.30 ATSR SU v4.21 ATSR ORAC v3.02

------ ATSR-2 ------ | ------------ AATSR ----------

regional consistent overlap biases ~0.02

Aerosol_cci > Thomas Holzer-Popp > ESA Living Planet Symposium, Bergen, 1 July 2010

slide 5

Create international network

•  AEROSAT •  International Satellite Aerosol Science Network •  initiated by Aerosol_cci •  4th meeting Beijing, 22-24 October 2016

•  100+ participants, many new from Asia + Africa •  Global forum for in-depth discussion of the retrieval problem •  Close interaction with global modeling community •  CCI products received wide exposure to the international

aerosol modeling community

Aerosol_cci > Thomas Holzer-Popp > ESA Living Planet Symposium, Bergen, 1 July 2010

slide 6

Inspire international teams to re-think retrievals

•  Algorithm experiments and round robin exercise •  benefit from open exchange •  combine algorithms (ensemble) •  Iterative evolution cycle

•  First demonstration of uncertainties / error propagation •  at pixel-level •  validated as far as possible

Aerosol_cci > Thomas Holzer-Popp > ESA Living Planet Symposium, Bergen, 1 July 2010

slide 7

International: Set stage for future work

•  Cross-ECV •  demonstrate aerosol-cloud consistency •  concept of 2D joint histograms

•  Start developing / evaluating new aerosol variables highly needed by GCOS / AEROCOM modelers

•  dust •  absorption •  layer height

•  Extend long-term time series with SLSTR, (OLCI, 3MI)

Aerosol_cci > Thomas Holzer-Popp > ESA Living Planet Symposium, Bergen, 1 July 2010

slide 8

Start to become part of Copernicus Climate Service

•  Copernicus Climate Change Service •  Proposal for first contract (2 years) positively evaluated •  Focus on routine production tasks •  Aerosol_cci team effort enabled development of quality

products for operational services

•  builds on remaining algorithm innovation in CCI •  would benefit largely on long-term from further algorithm

development in CCI+