10.5676/DWD_GPCC/ITD_M_V1_100
GPCC Interpolation Test Dataset at 1.0° Gridded Monthly Precipitation Totals based on GHCN Monthly Totals interpolated by means of GPCC's modified SPHEREMAP For 1.0° grid resolution:
Finger, Peter; Ziese, Markus; Meyer-Christoffer, Anja; Schneider, Udo; Becker, Andreas (2015): GPCC Interpolation Test Dataset (ITD) at 1.0° DOI: 10.5676/DWD_GPCC/ITD_M_V1_100
Finger, Peter; Ziese, Markus; Meyer-Christoffer, Anja; Schneider, Udo; Becker, Andreas Global Precipitation Climatology Centre (GPCC, http://gpcc.dwd.de/) at Deutscher Wetterdienst (DWD) 2015 The GPCC Interpolation Test Dataset (ITD) was created to provide "open" precipitation data for users to compare their interpolation results with the GPCC interpolation procedure. Depart from the operational interpolation of anomalies, monthly precipitation totals were interpolated, because the necessary long term means to compute the anomalies could not be provided. As described in Becker et al. (2013), the interpolation was done at a finer subgrid and subsequent area and land portion weighting. Only (aggregated) monthly precipitation totals from the GHCN dataset (e.g., Menne et al., 2012) were used as input data. These data are additionally quality controlled by GPCC and can be different to the original GHCN data. Station coordinates were extracted from the GPCC data base and can therefore differ from the original GHCN coordinates. Within this dataset, gridded monthly precipitation totals for 1988, as NetCDF archive, and the underlying station data, as ASCII file with longitude, latitude and precipitation total, are provided. This dataset is applicable for the comparison of interpolation schemes, but not for hydrological or climatological analyses!

For hydrological and climatological investigations, the user is refered to this GPCC products (if several resolutions are available, the DOI for 1.0° is provided): Climatology (DOI: 10.5676/DWD_GPCC/CLIM_M_V2015_100), Full Data Reanalysis (DOI: 10.5676/DWD_GPCC/FD_M_V7_100), Full Data Daily (DOI: 10.5676/DWD_GPCC/FD_D_V1_100 ), Monitoring Product (DOI: 10.5676/DWD_GPCC/MP_M_V5_100), First Guess (DOI: 10.5676/DWD_GPCC/FG_M_100), First Guess Daily (DOI: 10.5676/DWD_GPCC/FG_D_100), and GPCC Drought Index (DOI: 10.5676/DWD_GPCC/DI_M_100).

References:
Becker et al., 2013, A description of the global land-surface precipitation data products of the Global Precipitation Climatology Centre with sample applications including centennial (trend) analysis from 1901-present, Earth System Science Data, Vol. 5, p. 71-99, DOI:10.5194/essd-5-71-2013
Menne et al., 2012, An overview of the Global Historical Climatology Network-Daily Database, Journal of Atmospheric and Oceanic Technology, Vol. 29, p. 897-910, DOI:10.1175/JTECH-D-11-00103.1

"Global gridded precipitation over land: a description of the new GPCC First Guess Daily product"
K. Schamm (1,2) M. Ziese (1), A. Becker (1), P. Finger (1), A. Meyer-Christoffer (1), U. Schneider (1), M. Schröder (2), and P. Stender (1)
(1) Deutscher Wetterdienst, Global Precipitation Climatology Centre, 63067 Offenbach/M., Germany
(2) Deutscher Wetterdienst, Satellite Based Climate Monitoring, 63067 Offenbach/M., Germany
in Earth System Science Data, DOI: 10.5194/essd-6-49-2014

"GPCC's new land surface precipitation climatology based on quality-controlled in situ data and its role in quantifying the global water cycle"
U. Schneider, A. Becker, P. Finger, A. Meyer-Christoffer, M. Ziese, B. Rudolf
Global Precipitation Climatology Centre, Deutscher Wetterdienst, Offenbach, Germany
in Theoretical and Applied Climatology, DOI: 10.1007/s00704-013-0860-x

"A description of the global land-surface precipitation data products of the Global Precipitation Climatology Centre with sample applications including centennial (trend) analysis from 1901-present"
A. Becker, P. Finger, A. Meyer-Christoffer, B. Rudolf, K. Schamm, U. Schneider, and M. Ziese
Global Precipitation Climatology Centre, Deutscher Wetterdienst, Offenbach, Germany
in Earth System Science Data, DOI: 10.5194/essd-5-71-2013

"The GPCC Drought Index - a new, combined and gridded global drought index"
M. Ziese (1), U. Schneider (1), A. Meyer-Christoffer (1), K. Schamm (1), J. Vido (1,*), P. Finger (1), P. Bissoli (2), S.Pietsch (3), A. Becker(1)
(1) Deutscher Wetterdienst, Global Precipitation Climatology Centre, 63067 Offenbach/M., Germany
(2) Deutscher Wetterdienst, Regionale Klimaüberwachung, 63067 Offenbach/M., Germany
(3) Deutscher Wetterdienst, Agrarmeteorologische Beratung, 63067 Offenbach/M., Germany
(*) now at: Technical University Zvolen, Department of Natural Environment, 960 53 Zvolen, Slovakia
in Earth System Science Data, DOI: 10.5194/essd-6-285-2014 Users are referred to following gridded Global Precipitation Climate Centre (GPCC) products:

GPCC Climatology 1951-2000 (GPCC_Clim) with high representativeness, for application as a reference, and for utilization of the anomaly interpolation method.

GPCC Full Data Reanalysis (GPCC_FD) with high accuracy, for, e.g., verification of models, or for analysis of historic global precipitation, or for research concerning the global water cycle, e.g., trend and teleconnection analyses.

GPCC Full Data Daily Product (GPCC_FD_D) is recommended to be used when the daily precipitation information is of highest importance, e.g. for analyses of extreme events and related statistics at daily resolution.

GPCC Monitoring Product (GPCC_MP) with high availability and reasonable timeliness, for applications like calibration of satellite data, or early annual reporting.

GPCC First Guess Product (GPCC_FG) with high timeliness, to be applied for, e.g., drought monitoring.

GPCC First Guess Daily Product (GPCC_FG_D) with high timeliness, to be applied for, e.g., drought monitoring.

GPCC Drought Index Product (GPCC_DI_M) with high timeliness, to be applied for, e.g., drought monitoring. 1988/01 - 1988/12
Latitude: -90.0 to 90.0; Longitude: -180.0 to 180.0 Gridded fields: gzip compressed NetCDF archive (classic) wikipedia.org
Station data: gzip compressed ASCII files with three columns (longitude, latitude, precipitation total)
(1 NetCDF archive and 12 ASCII files) List of Software for Manipulating or Displaying NetCDF Data show list
Panoply netCDF, HDF and GRIB Data Viewer Panoply Home
Climate Data Operators CDO CDO Home
NOAA's Weather and Climate Toolkit WCT Home
Climate Data Center CDC XML PDF ~ 755 KB per gzip compressed NetCDF archive
~ 165 KB per gzip compressed ASCII file
Dr. Andreas Becker, Head
Global Precipitation Climatology Centre (GPCC)
c/o Deutscher Wetterdienst
Postfach 10 04 65
D-63004 Offenbach/Main
GERMANY
e-mail: gpcc@dwd.de

Tel.: + 49 (0)69 / 8062-2900
Fax: + 49 (0)69 / 8062-3987
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GPCC Interpolation Test Dataset	1.0 ° (.zip)
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