ODIN/OSIRIS Level 2 retrieval and validation at Finnish Meteorological Institute

Details ODIN/OSIRIS Level 2 retrieval and validation at Finnish Meteorological Institute ODIN/OSIRIS Level 2 retrieval and validation at Finnish Meteorological Institute

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....9523s&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #9523

Computer Science

Sound

Scientific paper

The Odin satellite launched on February 2001 carries two instruments, OSIRIS (Optical Spectrograph and InfraRed Imaging System) and SMR (Sub-Millimeter Radiometer). OSIRIS and SMR are both used for making aeronomical measurements whereas SMR makes astronomical measurements as well. In aeronomy mode both instruments use the limb scanning technique to retrieve vertical profiles of minor constituents in the middle atmosphere. Odin is a Swedish-led satellite project funded jointly by Sweden (SNSB), Canada (CSA), Finland (Tekes) and France (CNES). OSIRIS measurements cover the altitude range from 7 to 60 km (or alternatively to 120 km). The Level 1 processing of the OSIRIS measurement data is done in Canada by University of Saskatchewan. The Level 2 processing is done separately by teams in Canada and Finland using different retrieval methods. In Finland the Level 2 processing is done by the Finnish Meteorological Institute (FMI) using the Modified Onion Peeling (MOP) method. The aim of the processing is to simultaneously retrieve vertical profiles of ozone, NO_2, BrO, OClO and aerosols. The profile of neutral air density is also retrieved. The processing takes place at Sodankylä processing center. The processed FMI Level 2 data will be compared with OSIRIS data processed with other retrieval methods e.g. the ozone profiles retrieved using the so-called Flittner method. The validation will also be done against other satellite instruments and various soundings. These validation results will be presented.

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