MAPPING OF CO2/CH4 ANNUAL FLUXES AT HIGH LATITUDE CONTINENTAL AREAS APPLYING MICROWAVE RADIOMETER OBSERVATIONS

摘要

Feasibility of space-borne microwave radiometers and optical sensors to support the mapping of CO2 and CH4 fluxes and annual balances is investigated. First, satellite data retrievals and observations with towerbased reference sensors of satellite instruments are compared with available in situ data. This is carried out in order to find out the relevance of these specific satellite data products, such as day of snow melt information. Secondly, approaches to apply satellite data for mapping purposes are demonstrated in the case of methane emissions from Siberian permafrost areas. The investigated satellite instruments include SMOS, MODIS, AATSR, AMSR-E and SSM/I.