| 中国区域降雪量和降雪频率对沙尘天气的影响作用分析 |
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| 引用本文： | 徐兴奎,王小桃,周广庆.中国区域降雪量和降雪频率对沙尘天气的影响作用分析[J].中国沙漠,2011,31(5):1293-1301. |
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| 作者姓名： | 徐兴奎 王小桃 周广庆 |
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| 作者单位： | 1.中国科学院大气物理研究所 国际气候和环境科学中心, 北京 100029; 2.中国科学院研究生院 地球科学学院, 北京 100049 |
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| 基金项目： | 国家自然科学基金项目(40675047); 国家重点基础研究发展计划(2006CB403607); 中国科学院创新项目(KZCX2-YW-219)资助 |
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| 摘 要： | 1970—2000年间气象台站降雪量和沙尘天气统计结果显示,在中国冬春季主要积雪覆盖区域,沙尘天气发生频次相对较低,各类沙尘天气基本发生在积雪覆盖率低、年降雪量少的区域。时间序列分析结果进一步显示,年降雪量和沙尘天气之间存在显著的负相关,降雪量的增多对沙尘天气的年发生次数具有明显的抑制作用。同时,年降雪频率也是影响沙尘天气爆发频次的重要因素之一。对于中国西北干旱少雪的地区,尤其体现在新疆北部地区,年降雪频率的增加能够显著地减少各类沙尘天气的发生次数。
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| 关 键 词： | 沙尘天气 降雪量 降雪频率 地表覆盖 |
| 收稿时间： | 2011-1-5 |
| 修稿时间： | 2011-3-1 |
Impact of Snowfall Amount and Snowfall Frequency on Sand-Dust Events in China |
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| XU Xing-kui,WANG Xiao-tao,ZHOU Guang-qing.Impact of Snowfall Amount and Snowfall Frequency on Sand-Dust Events in China[J].Journal of Desert Research,2011,31(5):1293-1301. |
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| Authors: | XU Xing-kui WANG Xiao-tao ZHOU Guang-qing |
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| Institution: | 1.International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; 2.College of Earth Science, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The statistical results of meteorological data during 1970-2000 show that the sand-dust events frequency is relatively low in areas with snow cover in winter and spring in China,and the sand-dust events mainly occurs in areas with low snow coverage and snowfall amount.There is a significantly negative correlation between annual snowfall amount and sand-dust events frequency.Increase of annual snowfall amount decreases annual sand-dust events frequency obviously.Meanwhile,snowfall frequency is also an import... |
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| Keywords: | sand-dust events snowfall snow frequency land cover |
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