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Data Extent

Gridded 20-year Parameterization of a Stochastic Weather Generator (CLIGEN) to Fill Gaps in Coverage in the Northern Hemisphere

CLImate GENerator (CLIGEN) is a stochastic weather generator that produces weather time series for soil erosion modeling and various other applications. The generated time series are statistically similar to observed long-term time series. This gridded CLIGEN parameterization with 0.25° spatial resolution complements existing global coverages by filling in remaining gaps that existed in the northern hemisphere (see the map layer *.kmz file with all grid point locations). The coverage is largely represented by Canada, Europe, and Russia and encompasses countries north of ~40°N with no previous known coverage. The CLIGEN inputs may be used to generate daily precipitation, temperature, dewpoint, solar radiation, and wind time series, as well as sub-daily precipitation patterns. The gridded parameterization allows CLIGEN time series to be generated at any point the grid. In particular, the dataset can provide climate drivers for climate-related research in ungauged areas where observed climate records are unavailable.

The data are formatted as CLIGEN *.par files, which are the only required input for CLIGEN. The files are contained in the "Grid Files" download with n=114,150 files corresponding to the total number of grid points. The files are labeled according to grid point lat/lon coordinates (WGS84) in decimal degrees. The labeling convention uses 'N' and 'E' (north, east) to represent coordinates with a positive sign and 'S' and 'W' (south, west) to represent coordinates with a negative sign.

Release Date
Spatial / Geographical Coverage Area
POLYGON ((-140.185546875 48.819524141945, -93.251953125 49.050470195294, -82.177734375 41.654445072031, -65.654296875 44.353314321515, -11.77734375 35.205233347515, 7.20703125 39.397999595421, 17.138671875 34.323023630488, 35.2880859375 35.896837733825, 49.2626953125 38.761579511757, 75.322265625 38.837568258966, 87.01171875 48.25028349849, 100.72265625 42.322001080603, 120.76171875 46.343135602602, 124.98046875 52.291682562691, 134.12109375 46.343135602602, 130.95703125 31.686107579079, 156.62109375 26.779943479945, 222.5390625 43.125043167401, 220.4296875 45.143304739488, 223.2421875 46.126556302419, 224.296875 85.051128779807, -170.15625 85.780167984207, -170.5078125 52.099756925757, -139.5703125 53.37677497506))
Ag Data Commons
Temporal Coverage
January 1, 2000
Contact Name
Goodrich, Dave
Contact Email
Public Access Level
Program Code
005:040 - Department of Agriculture - National Research
Bureau Code
005:18 - Agricultural Research Service