| Six Years of Fraud by the Global
  Precipitation Climatology Centre (GPCC) of the German Weather Service (DWD)   Since the summer of 2005 the GPCC
  pretends that the VASClimO dataset is produced by the GPCC (e.g. Rudolf and
  Schneider, 2005; Schneider et al., 2010, and many other reports). In fact
  this dataset is neither produced by means of the GPCC nor on behalf of it.    The GPCC (namely Dr. Bruno Rudolf,
  Tobias Fuchs, Dr. Andreas Becker, Udo Schneider, Anja Meyer-Christopher,
  Markus Ziese) repeatedly claimed that the VASClimO dataset has been
  interpolated by Ordinary Kriging and is interpolated on a base climatology of
  the GPCC. All of them were informed that these statements are wrong before
  they published them. They refused to look into the proof they got. They
  refused the offer to learn how the data are actually interpolated. The base
  climatology of the VASClimO dataset consists of the long-term means of the
  FAO Agromet Group. These data are not quality controlled though the GPCC
  pretends that this dataset is based on quality controlled data.    The supervisors of the GPCC got
  informed in good time about the fraudulent behavior of the GPCC (namely the division
  director Volker Vendt-Schmitt in 2003, the division director Dr. Helene
  Bartels in 2005, the member of the board Dr. Winfried Thommes in 2007, the
  president of the DWD from 2007 onwards) but refused to regard the proof of
  the unethical behavior of their stuff. Instead, after deliberately publishing
  wrong information, Dr. Bruno Rudolf and Tobias Fuchs got promoted to become
  division directors themselves. And I got sued by the DWD in the name of the
  Federal Republic of Germany for publicly saying an unpleasant truth.    | 
 
References:
 
Rudolf, B. and U. Schneider (2005): Calculation
of gridded precipitation for the global land-surface using in-situ gauge
observations. Proceedings of the 2nd Workshop of the International
Precipitation Working Group.
Schneider U., A. Becker, A. Meyer-Christoffer,
M. Ziese, and B. Rudolf, 2010: Global Precipitation Analysis Products of the
GPCC. Published at http://gpcc.dwd.de