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ERS-1/2 ATSR ARC Level 3 products [AT1/AT2_AVG_3PAARC]

How To Access Data

External Data (Restrained)

The data is offered through the University of Leicester’s CEDA service.

  1. Go to the CEDA archive
  2. Follow the steps described on the website to access the data.
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The recommended ATSR Level 3 products for Sea Surface Temperature (SST) applications are the ARC (ATSR Re-processing for Climate) Level 3 products. ARC reprocesses the ATSR multi-mission archive using new cloud detection and SST retrievals to produce a homogenous record of sea surface temperature. The main ARC objective is to reduce regional biases in retrieved SST to less than 0.1 K for all global oceans while creating a very homogenous record with a stability (lack of drift in the observing system and analysis) of 0.05 K per decade.

ARC products are available for ATSR-1, ATSR-2 and AATSR. ARC products are provided in netCDF format and contain data for both the skin SST and the SST estimated for depths of 0.2 and 1.0 m (corresponding approximately to drifter and moored buoy depths). The AATSR estimated depth SSTs are adjusted to a local equatorial crossing time of 10:30 (approximately half an hour after observation), to provide continuity with ATSR-1 and ATSR-2 data.

The ARC project was led by Chris Merchant (University of Reading, formerly of the University of Edinburgh) and funded by NERC and the UK Government.



Spatial coverage:
85 N, -78 S, -180 W, 180 E
Temporal coverage:
1991-08-01 - 2003-06-221991-08-01 - 1997-12-17 (ATSR-1) 1995-06-01 - 2003-06-22 (ATSR-2)
Date of launch:
1995-04-21, 1991-07-17
Mission status:
Orbit height:
782 to 785 km
Orbit type:
Swath width:
5 km


level 3


CEDA Archive Website

ATSR ARC Level 3 products documentation

CEDA Archive Website

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Product Specifications

More ATSR Documents

Product Specifications

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ESA Earth Observation User Services Portal

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