References

ESSD

Earth System Science Data

ESSD

Earth Syst. Sci. Data

1866-3516

Copernicus Publications

Göttingen, Germany

10.5194/essd-6-49-2014

Global gridded precipitation over land: a description of the new GPCC First Guess Daily product

Schamm

¹ ² Ziese

¹ Becker

https://orcid.org/0000-0003-2333-3337

¹ Finger

¹ Meyer-Christoffer

¹ Schneider

¹ Schröder

https://orcid.org/0000-0002-9693-7812

² Stender

Deutscher Wetterdienst, Global Precipitation Climatology Centre, 63067 Offenbach/M., Germany

Deutscher Wetterdienst, Satellite-based Climate Monitoring, 63067 Offenbach/M., Germany

27 01 2014

6 1 49 60

2014

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

This article is available from https://essd.copernicus.org/articles/6/49/2014/essd-6-49-2014.html

The full text article is available as a PDF file from https://essd.copernicus.org/articles/6/49/2014/essd-6-49-2014.pdf

This paper describes the new First Guess Daily product of the Global Precipitation Climatology Centre (GPCC). The new product gives an estimate of the global daily precipitation gridded at a spatial resolution of 1° latitude by 1° longitude. It is based on rain gauge data reported in near-real time via the Global Telecommunication System (GTS) and available about three to five days after the end of each observation month. In addition to the gridded daily precipitation totals in mm day<sup>−1</sup>, the standard deviation in mm day<sup>−1</sup>, the kriging interpolation error in % and the number of measurements per grid cell are also encoded into the monthly netCDF product file and provided for all months since January 2009. Prior to their interpolation, the measured precipitation values undergo a preliminary automatic quality control. For the calculation of the areal mean of the grid, anomalies are interpolated with ordinary block kriging. This approach allows for a near-real-time release. Therefore, the purely GTS-based data processing lacks an intensive quality control as well as a high data density and is denoted as First Guess. The daily data set is referenced under <a href="http://dx.doi.org/10.5676/DWD_GPCC/FG_D_100"target="_blank">doi:10.5676/DWD_GPCC/FG_D_100</a>. Two further products, the Full Data Daily and a merged satellite-gauge product, are currently under development at Deutscher Wetterdienst (DWD). These additional products will not be available in near-real time, but based on significantly more and strictly quality controlled observations. All GPCC products are provided free of charge via the GPCC webpage: <a href="ftp://ftp-anon.dwd.de/pub/data/gpcc/html/download_gate.html"target="_blank">ftp://ftp-anon.dwd.de/pub/data/gpcc/html/download_gate.html</a>.

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