A Bias-corrected Precipitation Climatology for China

  • 1. Cold & Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China;
    2. Water and Environment Research Center, University of Alaska Fairbanks, Fairbanks, AK99775, USA

Received date: 2006-09-06

  Revised date: 2006-11-09

  Online published: 2007-01-25

Supported by

National Natural Sciences Foundation of China, No.KZCX3-SW-345; Funds by CAREERI of CAS, No.2004116; No.2004102


This paper presents the results of bias corrections of Chinese standard precipitation gauge (CSPG) measurements for wind-induced undercatch, trace amount of precipitation and wetting loss. Long-term daily data of precipitation, temperature, and wind speed during 1951-2004 at 726 meteorological stations in China were used for this analysis. It is found that wind-induced gauge undercatch is the greatest error in most regions, and wetting loss and trace amount of precipitation are important in the low precipitation regions in Northwest China. Monthly correction factors (corrected/measured precipitation) differ by location and by type of precipitation. Considerable inter-annual variation of the corrections exists in China due to the fluctuations of wind speed and frequency of precipitation. More importantly, annual precipitation has been increased by 8 to 740 mm with an overall mean of 125 mm at the 726 stations over China due to the bias corrections for the study period. This corresponds to 5% -72% increases (overall mean of 18% at the 726 stations over China) in gauge-measured yearly total precipitation over China. This important finding clearly suggests that annual precipitation in China is much higher than previously reported. The results of this study will be useful to hydrological and climatic studies in China.

Cite this article

YE Baisheng, YANG Daqing, DING Yongjian, HAN Tianding . A Bias-corrected Precipitation Climatology for China[J]. Acta Geographica Sinica, 2007 , 62(1) : 3 -13 . DOI: 10.11821/xb200701001


[1] UNESCO. World Water Balance and Water Resources of the Earth. Studies and Reports in Hydrology, No.25, UNESCO, Paris, 1978. 663pp.

[2] Legates D R. Global and terrestrial precipitation: a comparative assessment of existing climatologies. International Journal of Climatology, 1995, 15: 237-258.

[3] Walsh J E, Kattsov V, Portis D et al. Arctic precipitation and evaporation: model results and observational estimates. Journal of Climate, 1998, 11(1): 72-87.

[4] Sevruk B. Reliability of precipitation measurement. In: Sevruk B (ed.), Proc. International Workshop on Precipitation Measurement, St.Moritz, Switzerland, WMO/IAHS/ETH, 1989. 13-19.

[5] Yang D, Goodison B E, Metcalfe J R et al. Compatibility evaluation of national precipitation gauge measurements. J. of Geophysical Research-Atmospheres, 2001, 106(D2):1481-1492.

[6] Karl T R, Quayle R G, Groisman P Y. Detecting climate variations and change: new challenges for observing and data management system. J. Climate, 1993, 6(8): 1481-1494.

[7] Goodison B E, Louie P Y T, Yang D. WMO solid precipitation measurement intercomparison, final report, WMO/TD-No. 872, WMO, Geneva, 1998, 212pp.

[8] Adam J, Lettenmaier D P. Adjustment of global gridded precipitation for systematic bias. J. of Geophysical Research-Atmospheres, 2003, 108(D9): 4257. doi:10.1029/2002JD002499.

[9] Goodison B E, Sevruk B, Klemm S. WMO solid precipitation measurement intercomparison: Objectives, methodology, analysis. In: Atmospheric Deposition, IAHS publ. No.179, Wallingford, U.K., 1989. 57-64.

[10] Yang D, Shi Y, Kang E et al. Research on analysis and correction of systematic errors in precipitation measurement in Urumqi river basin, Tianshan. In: Proc. International workshop on precipitation measurement, St. Moritz, Switzerland, 1989. 173-179.

[11] Yang D, Shi Y, Kang E et al. Results of solid precipitation measurement intercomparison in the alpine area of Urumqi River Basin. Chinese Science Bulletin, 1991, 36(13): 1105-1109.

[12] Yang D. Research on analysis and correction of systematic errors in precipitation measurement in Urumqi river basin, Tianshan. Dissertation of Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences, 1988.
[ 杨大 庆. 天山乌鲁木齐河流域降水观测系统误差分析与修正. 中国科学院兰州冰川冻土研究所博士论文, 兰州, 1988.]

[13] Goodison B E, Metcalfe J R. The WMO solid precipitation intercomparison: Canadian assessment. In: WMO Technical Conference on Instruments and Method of Observation, Vienna, Austral, WMO/TD-No.462, WMO, 1992. 221-225.

[14] Yang D, Goodison B E, Metcalfe J R et al. Accuracy of NWS 8-inch standard non-recording precipitation gauge: result of WMO Intercomparison. Journal of Atmospheric and Oceanic Technology, 1998, 15(2): 54-68.

[15] Yang D, Goodison B E, Metcalfe J R et al. Accuracy of Tretyakov precipitation gauge: results of WMO Intercomparison. Hydrological Processes, 1995, 9(8): 877-895.

[16] Gunther Th. German participation in the WMO solid precipitation intercomparison: final results. In: Sevruk B (ed.), Proc. Symp. on Precipitation and Evaporation. Lapin M, Vol.1, Bratislava, Slovakia, Slovak Hydrometeorlogical Institute and Swiss Federal Institute of Technology, 1993, 93-102.

[17] Allerup P, Madsen H, Veijen F. A comprehensive model for correcting point precipitation. Nordic Hydrology, 1997, 28: 1-20.

[18] Yang D, Elomaa E, Tuominen A et al. Wind-induced precipitation undercatch of the Hellmann gauges. Nordic Hydrology, 1999, 30: 57-80.

[19] Metcalfe J R, Ishida S, Goodison B E. A corrected precipitation archive for the Northwest Territories. In: Mackenzie Basin Impact Study, Interim Report #2, Proc. Sixth Biennial AES/DIAND Meeting on Northern Climate, Yellowknife, NWT, Canada, 1994, 110-117.

[20] Yang D, Goodison B E, Benson C et al. Adjustment of daily precipitation at 10 climate stations in Alaska: application of WMO intercomparison results. Water Resources Research, 1998, 34(2): 241-256.

[21] Yang D, Ishida S, Goodison B E et al. Bias correction of daily precipitation measurements for Greenland. J. Geophysical Research, 1999, 105(D6): 6171-6182.

[22] Yang D. An improved precipitation climatology for the Arctic Ocean. Geophysical Research Letters, 1999, 26 (11): 1625-1628.

[23] Legates D R, Willmott C J. Mean seasonal and spatial variability in gauge-corrected, global precipitation. International Journal of Climatology, 1990, 10: 111-127.

[24] Sevruk B, Hamon W R. International comparison of national precipitation gauges with a reference pit gauge. WMO Instrument and Observing Methods Report No.17, WMO, 1984, 111pp.

[25] Aaltonen A, Elomaa E, Tuominen A. Measurement of precipitation. In: Proc. Symp. on Precipitation and Evaporation, edited by B. Sevruk and M. Lapin, Vol.1, Bratislava, Slovakia, Slovak Hydrometeorlogical Institute and Swiss Federal Institute of Technology, 1993, 42-46.

[26] Sevruk B. Method of correction for systematic error in point precipitation measurement for operational use. WMO-No. 589, 1982. 91pp.

[27] Larson L W, Peck E L. Accuracy of precipitation measurements for hydrological modelling. Water Resources Research, 1974, 10(4): 857-863.

[28] Legates D R, DeLiberty T L. Precipitation measurement biases in the United States. Water Resources Bulletin, 1993, 29 (5): 854-861.

[29] Metcalfe J R, Goodison B E. Correction of Canadian winter precipitation data. In: Proc. 8th Symp. on Meteorological Observations and Instrumentation, Anaheim, CA, AMS, 1993. 338-343.