This dataset is described in:
Ramankutty, N., and J.A. Foley (1999). Estimating historical changes in global land cover: croplands from 1700 to 1992, Global Biogeochemical Cycles 13(4), 997-1027.
The data is available in two formats, NetCDF and ArcINFO ASCII snapshots, both at 0.5 degree resolution.
The NetCDF download (46MB) contains the following files:
- README
- crop_1700-1992_v1.0.nc.gz – the global historical croplands data set
- version 1.0. file format = NetCDF. compressed using the Unix ‘gzip’ command, approximately 48 Mbytes compressed, and 304 Mbytes uncompressed
- readnc.f – a FORTRAN program to read the NetCDF files
- ies-io.f – a FORTRAN program that contains NetCDF subroutines
- makefile – a makefile to compile the programs used to read the NetCDF files
PLEASE NOTE: this global dataset is meant to be used only for continental to global scale applications. Use caution when using this dataset at local scales.
Downloads
- Historical Cropland netCDF Dataset, 1700-1992 (46MB)
- Historical Cropland ArcINFO ASCII Dataset, 1700 snapshot (56K)
- Historical Cropland ArcINFO ASCII Dataset, 1750 snapshot (60K)
- Historical Cropland ArcINFO ASCII Dataset, 1800 snapshot (64K)
- Historical Cropland ArcINFO ASCII Dataset, 1850 snapshot (64K)
- Historical Cropland ArcINFO ASCII Dataset, 1870 snapshot (68K)
- Historical Cropland ArcINFO ASCII Dataset, 1890 snapshot (72K)
- Historical Cropland ArcINFO ASCII Dataset, 1900 snapshot (72K)
- Historical Cropland ArcINFO ASCII Dataset, 1910 snapshot (76K)
- Historical Cropland ArcINFO ASCII Dataset, 1930 snapshot (76K)
- Historical Cropland ArcINFO ASCII Dataset, 1950 snapshot (80K)
- Historical Cropland ArcINFO ASCII Dataset, 1970 snapshot (80K)
- Historical Cropland ArcINFO ASCII Dataset, 1990 snapshot (84K)