Advanced Along-Track Scanning Radiometer (AATSR) is one of the Announcement of Opportunity (AO) instruments on board the European Space Agency (ESA) satellite ENVISAT. It is the most recent in a series of instruments designed primarily to measure Sea Surface Temperature (SST), following on from ATSR-1 and ATSR-2 on board ERS-1 and ERS-2. AATSR data have a resolution of 1 km at nadir, and are derived from measurements of reflected and emitted radiation taken at the following wavelengths: 0.55 µm, 0.66 µm, 0.87 µm, 1.6 µm, 3.7 µm, 11 µm and 12 µm.
Special features of the AATSR instrument include its use of a conical scan to give a dual-view of the Earth's surface, on-board calibration targets and use of mechanical coolers to maintain the thermal environment necessary for optimal operation of the infrared detectors.
Imaging multi-spectral radiometers (vis/IR) & Multipledirection/polarisation radiometers
Sea surface temperature: <0.5K over 0.5 deg x 0.5 deg (lat/long)area with 80% cloud cover Land surface temperature: 0.1K (relative)
IR ocean channels: 1km x 1km, Visible land channels: 1km x 1km
VIS - NIR: 0.555, 0.659, 0.865 micrometers, SWIR: 1.6 micrometers,MWIR: 3.7 micrometers, TIR: 10.85, 12 micrometers
Land ( Vegetation ), Ocean and Coast ( Sea Surface Temperature ), Atmosphere ( Clouds/Precipitation )
Latest Mission Operations News
MERIS users are informed that the full mission Envisat MERIS Reduced Resolution (RR) datasets have been migrated to the ESA EO centralised dissemination service with online access through a new release of MERCI integrated in the EO Single Sign-On (EO-SSO) architecture.
Related Data Types
Related (Key) Documentation