The project aims at producing an ENVISAT-1 mission-long monitoring of the inorganic chlorine (Cly) and fluorine (Fy) loading in the Earth’s middle atmosphere, based on FTIR vertical column abundance measurements of the key related species HCl, ClONO2, HF and COF2 at 10 ground-based NDSC sites distributed worldwide. These Cly and Fy inventories will be completed with ClO and OClO measurements expected as Level-2 products from ENVISAT-1. The column abundances of the source gases CFC-12 and HCFC-22 will be used to place the stratospheric Cly and Fy evolution in perspective with the more complete sets of organic chlorinated and fluorinated compounds measured at the ground by the in situ networks NOAA-CMDL and AGAGE. The assimilation of the retrieved geophysical data bases will be performed through 3-D model calculations incorporating physical, chemical and transport characteristics of the global atmosphere.
- Ny Ålesund (78.9°N, 11.9°E) operated by AWI, - Kiruna (67.8°N, 20.4°E) operated by FZK, - Harestua (60.0°N, 11.0°E) operated by IVL, - Zugspitze (47.5°N, 11.1°E) operated by IFU, - Jungfraujoch (46.5°N, 8.0°E) operated by ULg, - Kitt Peak (31.9°N, 111.6°W) operated by LaRC, - Izana (28.2°N, 16.3°W) operated by FZK, - Mauna Loa (19.5°N, 155.6°W) operated by U.Denver, - Lauder (45.1°S, 169.7°E) operated by NIWA, - Arrival Heights (77.8°S, 166.7°E) operated by NIWA.
Co-Investigators: (1) T. BLUMENSTOCK, Forschungszentrum Karlsruhe (FZK), Germany; (2) M. CHIPPERFIELD, Centre for Atmospheric Science, U. of Cambridge (CASC), U.K.; (3) E. CUEVAS, Nat. Inst. of Meteorology, Spain; (4) N.B. JONES, B.J. CONNOR and S. WOOD, Nat. Inst. for Water and Atmosphere ( NIWA), N.-Z.; (5) E. MAHIEU and P. DEMOULIN, Inst. of Astro- and Geo-physics, Univ. of Liège (ULg), Belgium; (6) B.GALLE and J. MELLQVIST, Swedish Environmental Research Institute (IVL), Sweden; (7) Y. KONDO, U. of Nagoya, Japan; (8) A. MEIER, Institute of Space Physics, Sweden; (9) F.J. MURCRAY and A. GOLDMAN, Univ. of Denver, CO, USA; (10) J.-C. LAMBERT, Institut d’Aéronomie Spatiale de Belgique (IASB), Belgium; (11) J. NOTHOLT, Alfred Wegener Institut (AWI), Potsdam, Germany; (12) C.P. RINSLAND, NASA-Langley Research Center (LaRC), Hampton, VA, USA; (13) R. SUSSMANN, Fraunhofer Institut für Umwelt (IFU), Partenkirchen, Germany.
(1) Links with the NDSC/WMO: Network for the Detection of Stratospheric Change/World Meteorological Organisation.
ENVISAT AO projects: - AO ID 126, PI M. De Mazière: Validation of ENVISAT-1 level-2 products related to lower atmosphere O3 and NOy chemistry by an FTIR. - AO ID 158, PI J.-C. Lambert: CINAMON : characterisation, interpretation, application and maturation of key ozone- related ENVISAT-1 level-2 products, using correlative observations associated with the NDSC.