PRECIPITATION GAUGE ANALYSES

Table 4. Summary of publicly available, quasi-operational, quasi-global precipitation estimates from precipitation gauge data. Where appropriate, the algorithms applied to the individual input data sets are mentioned. Unlike the other tables, "global" implies "land areas", with variable amounts of coverage for islands. [Last updated 17 July 2013, G.J. Huffman]



Algorithm
Input data
Space/time grid
Areal coverage/start date
Update frequency
Latency
Producer (Developer) URL
APHRODITE Water Resources ~12,000 gauges 0.25°, 0.5°/daily Eurasia/1951-2007 - - APHRODITE Project (Yatagai) [1]
CPC Unified Gauge-based Analysis of Global Daily Precip. > 30,000 gauges (optimal interp. with orographic effects) 0.5°/daily Global/1979-2005 - - NOAA/NWS CPC (Chen & Xie)[2]
> 17,000 gauges real-time (optimal interp. with orographic effects) 0.5°/daily Global/2006 Daily 1 day NOAA/NWS CPC (Chen & Xie)[3]
CRU Gauge ~10,000 gauges (anomaly interpolation) 2.5°x3.75°, 5°/monthly Global/1900 - 1998 - - CRU at U. East Anglia (Hulme)[4]
CRU TS 3.10.01 Gauge ~10,000 gauges (anomaly interpolation) 0.5°/monthly Global/1901 - 2009 Yearly 1-2 years CRU and BADC (Harris)[5]
Dai Gauge Dataset 2 ~4,000 gauges (anomalies rel. to 1950-1979) 2.5°/monthly Global regions with data/1850 - 1996 - - NCAR (Dai)[6]
GHCN+CAMS Gauge ~3,800 gauges (SPHEREMAP) 2.5°/monthly Global/1979 Monthly 1 week NOAA/NWS CPC (Xie)[7]
GPCC Monitoring ~8,000 gauges (climatology-anomaly) 1°,2.5°/monthly Global/1986 - 2006
Version 1; 2007
Version 4
Monthly 2 months DWD GPCC (Becker)[8]
GPCC Full Data Reanalysis Version 6 ~67,200 gauges (climatology-anomaly) 0.5°,1°,2.5°/ monthly Global/1901-2010 Occasional; possible end of 2013 - DWD GPCC (Becker)[9]
GPCC VASClimo Version 1.1 ~9,000 gauges (climatology-anomaly) 0.5°,1°,2.5°/ monthly Global/1950-2000 Occasional - DWD GPCC (Becker)[10]


[1] http://www.chikyu.ac.jp/precip/index.html
[2] ftp://ftp.cpc.ncep.noaa.gov/precip/CPC_UNI_PRCP/GAUGE_GLB/V1.0/
[3] ftp://ftp.cpc.ncep.noaa.gov/precip/CPC_UNI_PRCP/GAUGE_GLB/RT/
[4] http://www.cru.uea.ac.uk/cru/data/precip/
[5] http://www.cru.uea.ac.uk/cru/data/hrg/ or http://badc.nerc.ac.uk/browse/badc/cru
[6] http://data.giss.nasa.gov/precip_dai/
[7] pingping.xie@noaa.gov; Dr. Pingping Xie
[8] ftp://ftp-anon.dwd.de/pub/data/gpcc/html/gpcc_monitoring_v4_doi_download.html
[9] ftp://ftp-anon.dwd.de/pub/data/gpcc/html/fulldata_v6_doi_download.html
[10] ftp://ftp-anon.dwd.de/pub/data/gpcc/vasclimo_50y_precip_clim_v1_1.zip