Precipitation is an important meteorological factor, ecological and water balance process in ecosystem. By using the quality controlled observational daily precipitation data series over China Mainland observed by 2472 gauges, through the ANUSPLIN software developed by the Australian National University based on the thin plate smooth spline method, the datasets of daily grid-based precipitation are established over China in recent 50 years from 1961 to 2010. The research results show the mean bias error of large part gauge is between -10 mm·mon-1 and 10 mm·mon-1. There are 96.7%, 91.8%, 63.2% and 94.0% gauge that the bias error is between -1 mm·d-1 and 1 mm ·d-1. This developed datasets are helpful to explore the spatial and temporal distributions of the precipitation. Based on results of typhoon Bilis and 7 interpolation experiments, RBEa falls off to the bottom when M equal to 9 and mounts up to the peak when M equal to 1. The APHRO grid value can represent the pattern of South China precipitation which reflect in gauge data. The CP grid data is more exact in describing the precipitation characteristic of Qinghai-Xizang Plateau, the Tianshan Mountains and Tarim Basin. Moreover, both CP data and APHRO data are able to depict the daily variation of Jiang-Huai Meiyu mainly. The two kinds of grid data reduce the rain intensity in the same way when heavy rain or moderate rain comes. Over the light rain, CP data has more veracity.
ZHAO Yufei
,
ZHU Jiang
. Assessing Quality of Grid Daily Precipitation Datasets in China in Recent 50 Years[J]. Plateau Meteorology, 2015
, 34(1)
: 50
-58
.
DOI: 10.7522/j.issn.1000-0534.2013.00141
[1]Xie P P, Arkin P A. Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates and numerical model outputs[J]. Bull Amer Meteor Soc, 1997, 78(11): 2539-2558.
[2]张强, 阮新, 熊安元. 近57年我国气温格点数据集的建立和质量评估[J]. 应用气象学报, 2009, 20(4): 385-393.
[3]沈艳, 熊安元, 施晓晖, 等. 中国55年来地面水汽压网格数据集的建立及精度评价[J]. 气象学报, 2008, 66(2): 283-287.
[4]Huffman G J, Adler Robert F, Morrissey Mark M, et al. Global precipitation at one-degree daily resolution from multisatellite observations[J]. J Hydrometeor, 2001, 2(1): 36-50.
[5]Chen M Y, Shi Wei, Xie Pingping, et al. Assessing objective techniques for gauge-based analyses of global daily precipitation[J]. J Geophys Res, 2008, 113, D04110, doi: 10.1029/2007JD009132.
[6]Xie P P, Chen M Y, Yang S, et al. A gauge-based analysis of daily precipitation over East Asia[J]. J Hydrometeor, 2007, 8(3): 607-626.
[7]Yatagai A, Arakawa Osamu, Kamiguchi Kenji, et al. A 44-year daily gridded precipitation dataset for Asia based on a dense network of rain gauges[J]. Science Online Letters on the Atmosphere, 2009, 5: 137-140.
[8]Feng S, Hu Q, Qian W H. Quality control of daily meteorological data in China, 1951-2000: A new dataset[J]. Int J Climatol, 2004, 24(7): 853-870.
[9]Hutchinson M F, Gessler P E. Splines more than just a smooth interpolator[J]. Geoderma, 1994, 62 (1): 45-67.
[10]Hutchinson M F. Interpolating mean rainfall using thin plate smoothing splines[J]. Inter J GIS, 1995, 9 (4): 385-403.
[11]Kitoh A, Kusunoki S. East Asian summer monsoon simulation by a 20-km mesh AGCM[J]. Climate Dyn, 2008, 31(4): 389-401.
[12]Yang J, Wang B, Wang B, et al. Biweekly and 21~30-day variations of the subtropical summer monsoon rainfall over the lower reach of the Yangtze River basin[J]. J Climate, 2010, 23(5): 1146-1159.
