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Satellite validation with lidar

J.A.E. van Gijsel(1), D.P.J. Swart(1), J.-L. Baray(2), H. Bencherif(2), H. Claude(3), T. Fehr(4), S. Godin-Beekmann(5), G.H. Hansen(6), P. Keckhut(7), T. Leblanc(8), I.S. McDermid(8), H. Nakane(9), E.J. Quel(10), K. Stebel(6), W. Steinbrecht(3), K.B. Strawbridge(11) and B. Tatarov(12)

(1) RIVM, P.O. Box 1, 3720 BA, Bilthoven, Netherlands
(2) Université de la Reunión, UMR CNRS 8105, 97715 Saint Denis Messag Cedex 9, France
(3) German weather service (DWD), Albin-Schwaiger-Weg 10, 82383, Hohenpeissenberg, Germany
(4) European space agency (ESA-ESRIN), Via Galileo Galilei, 00044, Frascati (RM), Italy
(5) CNRS/UPMC/UVSQ, UPMC - Boite 102, 75252 Paris Cedex 05, France
(6) Norwegian Air Research Institute, , 9296, Tromsø, Norway
(7) Laboratoire atmosphères, Milieux, Obs. spatiales, BP 3, 91371 Verrières-le-Buisson, France
(8) NASA, P.O. Box 367, Wrightwood, CA 92397, United States
(9) National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305-8506, Japan
(10) CEILAP (CITEFA-CONICET), Juan B. de La Salle 4397, B1603ALO Villa Martelli, Argentina
(11) Environment Canada, 6248 Eight Line, Egbert (ON), LOL 1N0, Canada
(12) National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan

Abstract

The "Satellite validation with lidar" (VALID) project supports the long-term multi-mission validation of atmospheric chemistry and physics instruments with ground-based lidars. VALID involves lidar stations around the world measuring stratospheric ozone and temperature profiles, and tropospheric aerosol and cloud properties. Currently over 8000 lidar profiles have been made available for validation purposes in VALID and its predecessor EQUAL (ENVISAT quality assessment with lidar). The satellite data under investigation here are the ozone and temperature profiles delivered by the GOMOS (Global ozone monitoring by occultation of stars), MIPAS (Michelson interferometer for passive atmospheric sounding) and SCIAMACHY (Scanning imaging absorption spectrometer for atmospheric chartography) instruments. We have collocated these profiles with the lidar measurements and analysed the comparison results for dependence on several geophysical and instrument observational parameters, keeping a close look at the instruments’ performances during the seven years of data acquisition. Validation results will be presented for the operational ESA products and various scientific products.