The ALGOM: GOMOS Level 2 Algorithm Evolution Studies project consists of different Level 2 studies, the objective is to improve the quality of GOMOS products. The work is performed in the framework of the GOMOS Quality Working Group, whose responsibility is to advise on the operations performance of a mission's instruments and its products, as well as on the evolution of algorithms, calibration, validation and processors.
Envisat's Earth observation instrument, GOMOS (Global Ozone Monitoring by Occultation of Stars), is a spectrometer that exploits the stellar occultation technique. GOMOS comprises of one UV-Visible channel (248-690 nm) and two near infrared channels (756-773 nm and 926-952 nm). These wavelength regions allow retrieving atmospheric vertical profiles of O3, NO2, NO3, O2, H2O, atmospheric density and aerosols.
ALGOM is an Instrument Characterisation and Algorithm Study. Maintenance and improvements of instrument characterisation and algorithm definition are crucial activities to guarantee that the requirements formulated in the Mission Requirement Document. These activities are nominally managed within the Quality Working Group (QWG), though some complementary studies are funded by ESA for supporting ad-hoc recalibration and reprocessing campaigns as well as for developing advanced scientific processors and innovative geophysical products.
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Organisation: Finnish Meteorological Institute