HAL Id: hal-00468238
https://hal.archives-ouvertes.fr/hal-00468238
Submitted on 12 Apr 2017
HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.
L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Tropospheric ozone from IASI: comparison of different inversion algorithms and validation with ozone sondes
Alexandra Griesfeller, C. Keim, G. Dufour, Maxim Eremenko, J. M. Flaud, Johannes Orphal, M. Höpfner, Cathy Clerbaux, Claire Scannell,
Pierre-François Coheur, et al.
To cite this version:
Alexandra Griesfeller, C. Keim, G. Dufour, Maxim Eremenko, J. M. Flaud, et al.. Tropospheric ozone
from IASI: comparison of different inversion algorithms and validation with ozone sondes. 2nd IASI
International Conference, Jan 2010, Annecy, France. �hal-00468238�
TROPOSPHERIC OZONE FROM IASI: COMPARISON OF DIFFERENT INVERSION ALGORITHMS AND VALIDATION WITH OZONE SONDES
A. Griesfeller 1 , C. Keim 2 , G. Dufour 1 , M. Eremenko 1 , J.-M. Flaud 1 , J. Orphal 3 , M. Höpfner 3 , C. Clerbaux 4 , C.
Scannell 4 , P.-F. Coheur 5 , D. Hurtmans 5 , S. Payan 6 , B. Barret 7 , E. Le Flochmoën 7
1 LISA, CNRS, France, 2 Astrium GmbH, Germany , 3 IMK-ASF, KIT, Germany, 4 LATMOS-IPSL, France, 5 ULB, Belgium, 6 LPMAA, France, 7 LA CNRS, France
col 0-6km col 0-11km col 0-14 km
-30 -20 -10 0 10 20 30
Bias (%)
Time period 02/2008-08/2008 (raw sonde) operational v4.2
LISA
Time period 06/2007-08/2008 (smoothed sonde) LATMOS (less stations)
LISA
First comparison results:
Comparison of the inversion algorithms from LISA, LATMOS, LPMAA, and Eumesat:
June 2007-August 2008
C. Keim et al., Tropospheric ozone from IASI: comparison of different inversion algorithms and validation with ozone sondes in
the northern middle latitudes, Atmos. Chem. Phys., 9, 9329–9347, 2009
Comparison of the inversion algorithms from LISA and LA for 3 months: June 2008 – August 2008:
50 coincidences for 8 stations in the NH midlatitudes
Tropospheric profiles Partial column amounts
1000 800 600 400 200
0,0 0,1 0,2 0,3
-0,08 -0,04 0,00 0,04 0,08 -40 -20 0 20 40all stations (50)
vmr [ppmv]
pres s ure [hPa]
LISA LISA a priori
smoothed sonde (LISA) LA
LA a priori
smoothed sonde (LA)
differences [ppmv]
LISA LA differences [%]
10 20 30 40 50 60 70
10 20 30 40 50 60
70 surface - 6 km surface - 11 km
LISA retrieval [DU]
smoothed sonde [DU]
10 20 30 40 50 60 70
10 20 30 40 50 60
70 surface - 6 km surface - 11 km
LA retrieval [DU]
smoothed sonde [DU]
