CLARA-A2: the second edition of the CM SAF cloud and radiation data record from 34 years of global AVHRR data
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Published:2017-05-11
Issue:9
Volume:17
Page:5809-5828
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ISSN:1680-7324
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Container-title:Atmospheric Chemistry and Physics
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language:en
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Short-container-title:Atmos. Chem. Phys.
Author:
Karlsson Karl-Göran, Anttila Kati, Trentmann Jörg, Stengel MartinORCID, Fokke Meirink JanORCID, Devasthale Abhay, Hanschmann Timo, Kothe Steffen, Jääskeläinen Emmihenna, Sedlar Joseph, Benas NikosORCID, van Zadelhoff Gerd-JanORCID, Schlundt Cornelia, Stein Diana, Finkensieper StefanORCID, Håkansson NinaORCID, Hollmann RainerORCID
Abstract
Abstract. The second edition of the satellite-derived climate data record CLARA (The CM SAF Cloud, Albedo And Surface Radiation dataset from AVHRR data – second edition denoted as CLARA-A2) is described. The data record covers the 34-year period from 1982 until 2015 and consists of cloud, surface albedo and surface radiation budget products derived from the AVHRR (Advanced Very High Resolution Radiometer) sensor carried by polar-orbiting, operational meteorological satellites. The data record is produced by the EUMETSAT Climate Monitoring Satellite Application Facility (CM SAF) project as part of the operational ground segment. Its upgraded content and methodology improvements since edition 1 are described in detail, as are some major validation results. Some of the main improvements to the data record come from a major effort in cleaning and homogenizing the basic AVHRR level-1 radiance record and a systematic use of CALIPSO-CALIOP cloud information for development and validation purposes. Examples of applications studying decadal changes in Arctic summer surface albedo and cloud conditions are provided.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
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