GOES-East Downward Longwave Irradiance

IDENTIFICATION
DescriptionEstimation of the downward longwave irradiance reaching the Earth surface derived from the data of the imager on board the geostationary satellite GOES. Algorithm is a bulk parametrization that uses NWP model outputs to calculate a clear sky Downward Longwave Irradiance (DLI), corrected according to satellite derived cloud information. The hourly product is interpolated at rounded UT hours, by a pixel dependant temporal interpolation between two consecutive satellite images. The value in the daily product is the integration of all the hourly values in the UT day. The product is remapped onto a 0.05° regular grid and expressed in W/m2.
Product typeNear real time productThumbnail
StatusOperational
IdentifierOSI-305
AcronymGOES-E DLI
Acronym for EDC (APNM)OSIDDLI
Product navigator referenceEO:EUM:DAT:GOES:OSIDDLI
CHARACTERISTICS
Processing levelL3
Satellite inputGOES-E/IMAGER
Other inputECMWF outputs (temperature, humidity and aerosols profiles)
Frequency24 per day + 1 per day
Timeliness2 h
Spatial coverageWest Atlantic East Pacific 60N-60S 135W-15W
Spatial sampling0.05° Lat-Lon
Characteristics & methodsBulk parametrization
ACCURACY REQUIREMENTS
Thresold accuracymonthly relative bias : 10%, monthly relative Std. Deviation :20%
Target accuracymonthly (TBC) relative bias : 5%, monthly relative Std. Deviation :10%
Optimal accuracymonthly relative bias : 0%, monthly relative Std. Deviation : 3%
Verification/validation methodroutine comparison with pyrgeometer measurements
DATA ACCESS
OSI SAF ProducerMétéo-France
Diffusion mean(s) and format(s)EUMETCast (GRIB2)
Ifremer FTP Server (NetCDF4)
EDC (GRIB2)
Link FTP serverIfremer FTP server
Applications and usersOcean atmosphere studies.
VIEW MORE DOCUMENTATION
Product web pageDescriptionProduct User ManualPUM
Live production statusStatus
Last products at a glanceQuicklookScientific Validation ReportSVR
Continuous monitoringQuality
HISTORY, COMMENTS
First product date06/12/2011