Spatiotemporal variations of snow cover in northeast China based on flexible multiday combinations of moderate resolution imaging spectroradiometer snow cover products

作者: Shengbo Chen , Qian Yang , Hongjie Xie , Haijun Zhang , Peng Lu

DOI: 10.1117/1.JRS.8.084685

关键词:

摘要: Daily moderate resolution imaging spectroradiometer (MODIS) (Terra and Aqua) snow cover products are used to produce flexible multiday combinations for each hydrological year between October 2003 September 2013 in northeast China. Compared with situ observations, the daily achieve overall accuracy of 47.51 76.52%, respectively, which is MODIS Terra 30.57% Aqua under all-sky conditions. Snow fraction, day map (SCD), onset date (SCOD), end (SCED), index (SCI) then generated. The highest SCD, earliest SCOD, latest SCED always located southern edge Da Hinggan Mountain Changbai Mountain, followed by Xiao Mountain. SCI negatively correlated air temperature, a correlation coefficient −0.73 ( p ) snowfall season; positively precipitation, but insignificant at 95% level. This suggests that more sensitive temperature than precipitation. In other words, continuous increase due global warming long term will result reducing cover, gracious water resource China, although relative decrease recent 10 years has resulted increase.ow increase.

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