Climate Change Research ›› 2011, Vol. 7 ›› Issue (4): 235-242.
A serial of quality control (QC) procedures were performed on a gauge-based global daily precipitation dataset from the Global Telecommunication System (GTS) for the period 1998-2009. A new global precipitation dataset was constructed after the control procedures. The new dataset was evaluated using CMAP and GPCP precipitation products. The results show that the frequency and spatial distribution of monthly precipitation in the new dataset well agree with those in CMAP and GPCP. The global mean correlation coefficient between gauge precipitation and CMAP/GPCP precipitation increased from 0.24 before QC to 0.70 after QC, accordingly, and the root mean square error decreased form 12 mm/d to 1 mm/d. The interannual variability of monthly precipitation in the new dataset is consistent with that of the CMAP/GPCP in Asia; and the seasonal variability of precipitation in different regions over the world coincides with those of CMAP/GPCP quite well.
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