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利用GRACE时变重力场探测2010年中国西南干旱陆地水储量变化

DOI: 10.6038/cjg20130606, PP. 1843-1849

Keywords: GRACE,时变重力场,西南干旱,陆地水储量变化,月降雨量

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Abstract:

GRACE(GravityRecoveryAndClimateExperiment)卫星计划为监测陆地水储量变化提供了有效技术手段.本文采用2003至2010年共计8年的GRACE月重力场模型反演中国西南区域陆地水储量变化,与GLDAS(GlobalLandDataAssimilationSystem)全球水文模型进行对比分析,其结果在时空分布上均符合较好,同时在2009年秋至2010年春该区域陆地水储量均呈现明显减少,与该时段云贵川三省的干旱事件相一致;比较分析了2009年秋至2010年春GRACE反演陆地水储量变化与TRMM(TropicalRainfallMeasuringMission)合成数据计算的月降雨量的时空分布,两组结果均与西南干旱事件对应时段与区域十分吻合;对近8年的陆地水储量变化与月降雨量数据进行相关性分析,其结果表明陆地水储量变化与降雨量强相关,即降雨量是导致陆地水储量变化的主要因素;分析该区域地表温度变化,结果显示2009年9月至2010年3月地表温度均比历史同期高,地表温度的升高加剧了陆地水储量的减少.

References

[1]  Rodell M, Velicogna I, Famiglietti J S. Satellite-based estimates of groundwater depletion in India. Nature, 2009, 460(7258): 999-1003.
[2]  Chen J L, Wilson C R, Tapley B D, et al. Recent La Plata basin drought conditions observed by satellite gravimetry. J. Geophys. Res., 2010, 115: D22108.
[3]  Jekeli C. Alternative methods to smooth the Earth''s gravity. Rep. 327, Dep of Geod Sci and Surv, State Univ Columbus, 1981.
[4]  Wahr J, Molenaar M, Bryan F. Time variability of the Earth''s gravity field: Hydrological and oceanic effects and their possible detection using GRACE. J. Geophys. Res., 1998, 103(B12): 30205-30229.
[5]  Chen J L, Rodell M, Wilson C R, et al. Low degree spherical harmonic influences on Gravity Recovery And Climate Experiment (GRACE) water storage estimates. Geophys. Res. Lett., 2005, 32(14): L14405.
[6]  Rodell M, Houser P R, Jambor U, et al. The global land data assimilation system. Bull. Amer. Meteor. Soc., 2004, 85(3): 381-394.
[7]  黄慧君. 2006年云南省盛夏高温干旱成因分析. 云南地理环境研究, 2009, 21(4): 83-100. Huang H J. Cause analysis of high temperature and drought in 2006''s midsummer in Yunnan province. Yunnan Geographic Environment Research, 2009, 21(4): 83-100.
[8]  汪汉胜, 王志勇, 袁旭东等. 基于GRACE时变重力场的三峡水库补给水系水储量变化. 地球物理学报, 2007, 50(3): 730-736. Wang H S, Wang Z Y, Yuan X D, et al. Water storage changes in Three Gorges water systems area inferred from GRACE time-variable gravity data. Chinese J. Geophys. (in Chinese), 2007, 50(3): 730-736.
[9]  Swenson S, Wahr J. Post-processing removal of correlated errors in GRACE data. Geophys. Res. Lett., 2006, 33(8): L08402.
[10]  Han S C, Shum C K, Jekeli C, et al. Non-isotropic filtering of GRACE temporal gravity for geophysical signal enhancement. Geophys. J. Int., 2005, 163(1): 18-25.
[11]  Zhang Z Z, Chao B F, Lu Y, et al. An effective filter for GRACE time variable gravity: Fan filter. Geophys. Res. Lett., 2009, 36(17), doi: 10.1029/2009GL039459.
[12]  Luo Z C, Li Q, Zhang K, et al. Trend of mass change in the Antarctic ice sheet recovered from the GRACE temporal gravity field. Sci. China Earth Sci., 2012, 55(1): 76-82.

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