Precipitation Reconstruction Land (PREC/L): 1948-present
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Main content
Precipitation gauge measurements over land from the GHCN-v2 (Global Historical Climatology Network version 2) are interpolated onto 3 grids: at 0.5, 1 and 2.5 degree resolutions via optimal interpolation. Note: As of May, 2011 the GHCN version 3 station data set is available.
Key Strengths
Key Strengths
Land grid points are derived from high quality station gauge measurements.
Near real-time updates
Key Limitations
Key Limitations
Smaller gauge network than GPCC; no new stations added since GHCNv2 release ~1997
Please cite data sources, following the data providers' instructions
Suggested Data Citation
Dataset DOIs
None
Hosted Climate Index Files
None
Data Access
Usage Restrictions
None
Other Information
Earth system components and main variables
Type of data product
Dataset collections
Years of record
to
Data time period extended
Yes, data set is extended
Timestep
Monthly
Domain
Input Data
GHCN v2 gauge measurements
Vertical Levels:
None
Missing Data Flag
Missing data present
Ocean or Land
Land Only
Spatial Resolution
2.5 x 2.5, 1x1, 0.5 x 0.5
Model Resolution (reanalysis)
None
Data Assimilation Method
None
Model Vintage (reanalysis)
None
Key Publications
- Chen, M., P. Xie, J. E. Janowiak, and P. A. Arkin, 2002: Global Land Precipitation: A 50-yr Monthly Analysis Based on Gauge Observations, J. of Hydrometeorology, 3, 249-266
- Modifications to Pairwise Homogeneity Adjustment software to address coding errors and improve run - time efficiency. NCDC Technical Report NCDC No. GHCNM - 12 - 02