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The NorSEN network: Use of ENVISAT derived and ground-based aerosol information

Georg Hansen(1) and Esko Kyrö(2)

(1) Norwegian Institute for Air Research, Polar Environmental Centre, 9296 Tromsoe, Norway
(2) Finnish Meteorological Institute, Tähteläntie 71, 99600 Sodankylä, Finland


The North Calotte Satellite Evaluation cooperation Network (NorSEN) was established in Northern Fenno-Scandia to provide a better QA/QC of terrestrial and aquatic surface reflectance data from spectral imaging staellite instruments including necessary ancillary data at high latitudes. To this purpose in-situ surface observations are combined with atmospheric measurements in order to validate both level-2 products of, e.g., MERIS, and the parameters which are needed for atmospheric corrections. In this context, aerosol extinction is of prominent importance. This parameter is monitored at Sodankyla, Finland, and ALOMAR, Norway, on a permanent basis, in addition to a number of other relevant atmospheric parameters. We shall present the NorSEN network and the plans to integrate atmospheric and surface information from in-situ and satellite measurements in order to achieve improved surface reflectance data in this region and other regions with comparable observation conditions.


Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry