New global sub-daily meteorological forcing data are provided for use with land surface and hydrological-models. The data are derived from the ERA-40 reanalysis product via sequential interpolation to half-degree resolution, elevation correction and monthly-scale adjustments based on CRU (corrected-temperature, diurnal temperature range, cloud-cover) and GPCC (precipitation) monthly observations combined with new corrections for varying atmospheric aerosol-loading and separate precipitation gauge corrections for rainfall and snowfall. The WATCH Forcing data is a twentieth century meteorological forcing dataset for land surface and hydrological models. It consists of three of 6-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 time periods 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. The data covers land points only and excludes the Antarctica.
Temporal Range:
1901-01-01 00:00 +0000 to 2001-12-31 22:30 +0000
(Entire dataset)
Period details by dataset productPeriod details by dataset product1901-01-01 00:00 +0000 to 1909-12-31 22:30 +0000 (1901-1909 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1910-01-01 00:00 +0000 to 1919-12-31 22:30 +0000 (1910-1919 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1920-01-01 00:00 +0000 to 1929-12-31 22:30 +0000 (1920-1929 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1930-01-01 00:00 +0000 to 1939-12-31 22:30 +0000 (1930-1939 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1940-01-01 00:00 +0000 to 1949-12-31 22:30 +0000 (1940-1949 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1950-01-01 00:00 +0000 to 1959-12-31 22:30 +0000 (1950-1959 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1960-01-01 00:00 +0000 to 1969-12-31 22:30 +0000 (1960-1969 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1970-01-01 00:00 +0000 to 1979-12-31 22:30 +0000 (1970-1979 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1980-01-01 00:00 +0000 to 1989-12-31 22:30 +0000 (1980-1989 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)1990-01-01 00:00 +0000 to 1999-12-31 22:30 +0000 (1990-1999 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)2000-01-01 00:00 +0000 to 2001-12-31 22:30 +0000 (2000-2001 WATCH-WFD 0.5x0.5 degree global meteorological forcing data, WGS 84 spatial convention)
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=90S Northernmost=90N
Detailed coverage informationDetailed coverage information0.5° x 0.5° from 0.25E to 359.75E and 89.75S to 89.75N (720 x 360 Longitude/Latitude)
Data Contributors:
UK/MOD/MET/HADLEY
Hadley Centre for Climate Prediction and Research, Met Office, Ministry of Defence, United Kingdom
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