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WATCH forcing data (WFD) - 20th Century LWdown (surface incident longwave radiation) 1901-2001

The WATCH Forcing data is a twentieth century meteorological forcing dataset for land surface and hydrological models. It consists of three/six-hourly states of the weather for global half-degree land grid points. It was generated as part of the EU FP 6 project "WATCH" (WATer and global CHange") which ran from 2007-2011. The data was generated in 2 tranches with slightly different methodology: 1901-1957 and 1958-2001, but generally the dataset can be considered as continuous. More details regarding the generation process can be found in the associated WATCH technical report and paper in J. Hydrometeorology. To understand how the data grid is formed it is necessary to read the attached WFD-land-long-lat-z files either in NetCDF or DAT formats. The data covers land points only and excludes the Antarctica. LWdown or surface incident longwave radiation (also known as downwards long-wave radiation flux ) is the surface incident longwave radiation averaged over the next six hours, measured in W/m2 at 6 hourly resolution and 0.5 x 0.5 degrees spatial resolution.

Simple

Date (Publication)
2011-08-01
Identifier
CEH:EIDC: / 1314892215339
Identifier
https://catalogue.ceh.ac.uk/id/e5d00d66-dcf5-4b0e-9346-f6205a336385
Point of contact
  UK Centre for Ecology & Hydrology - Warnaars, T.
Custodian
  NERC EDS Environmental Information Data Centre
Maintenance and update frequency
notPlanned Not planned
GEMET - INSPIRE themes, version 1.0
  • Atmospheric Conditions
  • Meteorological geographical features
Access constraints
otherRestrictions Other restrictions
Other constraints
Registration is required to access this data
Use constraints
otherRestrictions Other restrictions
Other constraints
Licence terms and conditions apply
Use constraints
otherRestrictions Other restrictions
Other constraints
Please note that these data are based on climate reanalysis data, plus a spatial interpolation (from one-degree to half-degree), elevation correction and monthly-correction based on gridded observations. As such the WATCH Forcing data are designed for use in modelling (e.g. hydrological modelling) and for where good meteorological observations are not readily available.
Use constraints
otherRestrictions Other restrictions
Other constraints
Please reference the use of the WATCH forcing data in any work published using http://journals.ametsoc.org/doi/pdf/10.1175/2011JHM1369.1
Spatial representation type
grid Grid
Distance
30  urn:ogc:def:uom:EPSG::9001
Metadata language
EnglishEnglish
Character set
utf8 UTF8
Topic category
  • Climatology, meteorology, atmosphere
Begin date
1911-01-01
End date
2001-12-31
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Unique resource identifier
WGS 84
Distribution format
  • netCDF ()

Distributor
  NERC EDS Environmental Information Data Centre
OnLine resource
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Supporting documents

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Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date (Publication)
2010-12-08
Statement
These data were created as part of the EU FP6 project WATCH which was coordinated by NERC-CEH and ran from 2007-2011. The data were generated in two tranches according to time interval. The data from 1958-2001 were based on ECMWF (European Centre for Medium Range Weather Forecasting) "ERA-40" reanalysis data via interpolation, elevation correction and monthly bias correction from gridded observations. The data from 1901-1957 were created via re-ordering of the ERA-40 reanalysis one year at a time. For full details of the process see the WATCH technical report No 22 and Weedon (2011, J. Hydrometeorology).
File identifier
e5d00d66-dcf5-4b0e-9346-f6205a336385 XML
Metadata language
EnglishEnglish
Character set
ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1
Hierarchy level
dataset Dataset
Hierarchy level name
dataset
Date stamp
2025-06-03T07:41:37
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NERC EDS Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK
https://eidc.ac.uk/
 
 

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Spatial extent

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Keywords

GEMET - INSPIRE themes, version 1.0
Atmospheric Conditions Meteorological geographical features

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