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
StatusDevelopment
IdentifierOSI-305-b
AcronymGOES-E DLI
Acronym for EDC (APNM)ODDLISSI
Product navigator referenceEO:EUM:DAT:GOES:OSI-305-A-H
CHARACTERISTICS
Processing levelL3
Satellite inputGOES-16/ABI
Other inputNWP outputs (temperature and humidity profiles), cloud classification
Frequency24 per day + 1 per day
Central time00:00, 01:00, …, 23:00 – 12:00
Timeliness2 h
Spatial coverageWest Atlantic East Pacific : 60N-60S 135W-15W
Spatial sampling0.05° Lat-Lon
ProjectionCylindrical equidistant
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
Diffusion mean(s) and format(s)EUMETCast (NetCDF4)
LML FTP Server (NetCDF4)
EDC (NetCDF4)
Main FTP serverLML FTP server (hosted by Ifremer)Other FTP server,
other mean(s) to access main server
backup LML FTP server (last 7 days)
Thredds
HTTPS
EUMETCastEUMETCastDiscovery mean(s)
EUMETSAT Data CentreEDC
Applications and usersOcean atmosphere studies. OSI SAF ProducerMétéo-France
VIEW MORE DOCUMENTATION
Product web pageDescriptionProduct User ManualPUM
Scientific Validation ReportSVR
HISTORY, COMMENTS
  • This product will supersed OSI-305-a (temporary product, processed with a temporary chain previously processing OSI-305)
  • EUMETSAT product navigator reference for daily product :
  • Product based on the GOES-East data received in the OSI SAF production centre (Météo-France Lannion) directly from the satellite
Authorised to be operational/released20/03/2020