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- WATer and global CHange (WATCH) Forcing Data (WFD) - 20th Century
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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.
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