Surface Radiation Parameters (CLARA-A3) from EUMETSAT CM-SAF
Surface Radiation Budget for September 2023, Eumetsat CM-SAF Surface Radiation Parameters (CLARA-A3), Copyright: UHH/StefanKernTopics
- Access
- Description
- Parameters
- Coverage, spatial and temporal resolution
- Data quality
- Contact person
- References
- Data citation
Access
RESTRICTED: This link to the data set is only available for a restricted user group. The data set is only accessible in CEN/MPI net or accessible from external nets with a customer account. Please contact ICDC if you would like to access this data from outside the network.
- Data access via file system: /data/icdc/land/eumetsat_clara3_surfaceradiation/
Description
CLARA-A3 stands for "CM SAF cLouds, Albedo RAdiation data record, AVHRR-based, Edition 3" and comprises a suite of radiation and cloud parameters derived within the EUMETSAT Climate Monitoring Satellite Application Facility (CM-SAF) from Advanced Very High Resolution Radiometer (AVHRR) data.
Here we offer (for internal users only) the radiation products. Products are also available for surface albedo and clouds at ICDC.
For information about the data products we refer to the respective CM-SAF wep page.
Last update of data set at ICDC: January 22 2024.
Parameters
| Name | Unit |
|---|---|
| Surface downwelling shortwave radiation (SIS) | W/m² |
| Surface downwelling shortwave radiation standard deviation | W/m² |
| Clear sky surface downwelling shortwave radiation (SISCLS) | W/m² |
| Surface downwelling longwave radiation (SDL) | W/m² |
| Surface outgoing longwave radiation (SOL) | W/m² |
| Surface net longwave radiation (SNL) | W/m² |
| Surface radiation budget (SRB) | W/m² |
| Surface net shortwave radiation (SNS) | W/m² |
| TOA outgoing longwave radiation (OLR) | W/m² |
| TOA reflected solar flux (RSF) | W/m² |
Coverage, spatial and temporal resolution
Period and temporal resolution:
- 1979-01 to 2023-11
- Monthly
Coverage and spatial resolution:
- Global
- Spatial resolution: 0.25 degrees x 0.25 degrees, equally spaced lat/lon grid (Climate Modeling Grid, CMG)
- Geographic longitude:-179.875°E to 179.875°E
- Geographic latitude: -89.875°N to 89.875°N
- Dimension: 1440 columns x 720 rows
Format:
- NetCDF
Data quality
See the respective CM-SAF web page and the references.
Contact
Climate Monitoring Satellite Application Facility (CM-SAF)
Helpdesk at www.cmsaf.eu
email: contact.cmsaf (at) dwd.deStefan Kern
University of Hamburg
E-Mail: stefan.kern (at) uni-hamburg.de
References
Literature:
- ATBD, Algorithm Theoretical Basis Document (pdf, not barrier free)
- PUM, Products Product User Manual (pdf, not barrier free)
- Validation Report (pdf, not barrier free)
- Karlsson, K.-G., et al., CLARA-A3: The third edition of the AVHRR-based CM SAF climate data record on clouds, radiation and surface albedo covering the period 1979 to 2023, Earth Syst. Sci. Data, 15, 4901–4926, https://doi.org/10.5194/essd-15-4901-2023.
- Akkermans, T., Clerbaux, N. (2023): Validation of the CLARA-A3 Top-of-Atmosphere Radiative Fluxes Climate Data Record. J Atmos Ocean Technol., 40(11), 1523-1539, https://doi.org/10.1175/JTECH-D-23-0065.1.
Websites:
Data citation
Please cite the data as follows:
Karlsson, Karl-Göran; Riihelä, Aku; Trentmann, Jörg; Stengel, Martin; Solodovnik, Irina; Meirink, Jan Fokke; Devasthale, Abhay; Jääskeläinen, Emmihenna; Kallio-Myers, Viivi; Eliasson, Salomon; Benas, Nikos; Johansson, Erik; Stein, Diana; Finkensieper, Stephan; Håkansson, Nina; Akkermans, Tom; Clerbaux, Nicolas; Selbach, Nathalie; Schröder, Marc; Hollmann, Rainer (2023): CLARA-A3: CM SAF cLoud, Albedo and surface RAdiation dataset from AVHRR data - Edition 3, Satellite Application Facility on Climate Monitoring, DOI:10.5676/EUM_SAF_CM/CLARA_AVHRR/V003, https://doi.org/10.5676/EUM_SAF_CM/CLARA_AVHRR/V003 [last access February 23, 2024]