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Instrument image

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.

Not Operational
Imaging multi-spectral radiometers (vis/IR) & Multipledirection/polarisation radiometers
Technical Characteristics
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)
Spatial Resolution:
IR ocean channels: 1km x 1km, Visible land channels: 1km x 1km
Swath Width:
500 km
VIS - NIR: 0.555, 0.659, 0.865 micrometers, SWIR: 1.6 micrometers,MWIR: 3.7 micrometers, TIR: 10.85, 12 micrometers
Earth Topics
Land ( Vegetation ), Ocean and Coast ( Sea Surface Temperature ), Atmosphere ( Clouds/Precipitation )
Available Resources Type Access
AATSR FAQ Technical Document download
Glossary Technical Document link
AATSR Products Specifications Product Document download
Envisat MAVT-2003 - Working Meeting on MERIS and AATSR Calibrationand Geophysical Validation Proceedings link
AATSR Algorithm Theoretical Basis Document [for LST - Land SurfaceTemperature products] Technical Document download
AATSR Instrument ESA Bulletin download
AATSR Technical Note - Latitude Dependent Bias Correction Technical Document download
AATSR Operations General Reference link
AATSR/SLSTR Land Surface Temperature Portal General Reference link
Annex A - Product Data Conventions Product Document download
Minimize Latest Mission Operations News

Bulk Dissemination service for ERS/Envisat (A)SAR - Resumed

14 February 2020

The issue affecting the bulk download service on the ESAR OADS i.e. the ERS and Envisat (A)SAR data dissemination tool has been fixed, and the bulk ordering feature resumed.