| 1980-2019年青藏高原积雪深度时空差异性分析北大核心CSCD |
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| 引用本文： | 王芝兰,张飞民,王澄海,孙旭映,吕春艳.1980-2019年青藏高原积雪深度时空差异性分析北大核心CSCD[J].冰川冻土,2022,44(3):810-821. |
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| 作者姓名： | 王芝兰 张飞民 王澄海 孙旭映 吕春艳 |
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| 作者单位： | 1.兰州大学 大气科学学院/甘肃省气候资源开发及防灾减灾重点实验室，甘肃 兰州 730000;2.中国气象局 兰州干旱气象研究所/ 甘肃省干旱气候变化与减灾重点实验室，甘肃 兰州 730020;3.贵州省铜仁市气象局，贵州 铜仁 554300 |
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| 基金项目： | 国家自然科学基金项目(41975111);第二次青藏高原综合科学考察研究项目(2019QZKK0105);甘肃省自然科学基金项目(20JR5RA120);兰州干旱气象研究所创新团体基金项目(GHSCXTD-2020-2) |
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| 摘 要： | 积雪是地表特征的重要参数,其对辐射收支、能量平衡及天气和气候变化有重要影响。利用1980-2019年被动微波遥感积雪深度资料对青藏高原积雪时空特征进行分析,在此基础上将高原划分为东部、南部、西部及中部4个区域,并分区域讨论了多时间尺度积雪的变化特征及其与气温、降水的相关关系。结果表明:不同区域积雪深度在不同时间尺度的变化特征存在差异,高原东部积雪深度累积和消融的速率比西部快,南部积雪深度累积和消融速率比中部快。季节尺度上,冬季积雪高原东部最大,中部最小;春季积雪高原东部消融速率最大,西部积雪消融较慢但积雪深度最大;夏季高原西部仍有积雪存在。年际尺度上,各区域积雪深度在1980-2019年均呈现缓慢下降趋势,但东部积雪减少不显著;高原东部积雪深度在1980-2019年呈现出增加-减少-增加-减少的变化,其余3区均呈现出减少-增加-减少-增加-减少的变化。不同区域积雪深度对气温、降水的响应不同,高原东部和中部积雪深度与气温相关性较好;各区域积雪深度与降水呈不显著的正相关关系。
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| 关 键 词： | 积雪深度 青藏高原 空间差异 多时间尺度 |
| 收稿时间： | 2021-06-23 |
| 修稿时间： | 2022-03-31 |
Analysis on spatial and temporal difference of snow depth over the Tibetan Plateau from 1980 to 2019 |
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| Zhilan WANG,Feimin ZHANG,Chenghai WANG,Xuying SUN,Chunyan Lü.Analysis on spatial and temporal difference of snow depth over the Tibetan Plateau from 1980 to 2019[J].Journal of Glaciology and Geocryology,2022,44(3):810-821. |
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| Authors: | Zhilan WANG Feimin ZHANG Chenghai WANG Xuying SUN Chunyan LÜ |
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| Institution: | 1.College of Atmospheric Sciences，Lanzhou University / Key Laboratory of Climate Resources Development and Disaster Prevention and Reduction of Gansu Province，Lanzhou 730000，China;2.Institute of Arid Meteorology，China Meteorological Administration / Key Laboratory for Arid Climatic Change and Disaster Reduction of Gansu Province，Lanzhou 730020，China;3.Tongren Meteorological Bureau，Tongren 554300，Guizhou，China |
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| Abstract: | Snow depth is an important parameter of surface characteristics， which has a significant impact on radiation budget， energy balance， weather and climate change. Based on the data of passive microwave remote sensing snow depth over the Tibetan Plateau （TP） from 1980 to 2019， temporal and spatial characteristics of snow depth are analyzed. The TP is divided into four regions： eastern， southern， western and central parts. The results show that the variation characteristics of snow depth in different regions at different time scales are different. The rate of snow depth accumulation and melting in eastern part is faster than that in western part， while in southern part is faster than in central part. On seasonal scale， winter snow depth in eastern part is the more， and that in central part is the less. In spring， the melting rate of snow in eastern part is the faster， while that in western part is slow， but snow depth in western part is the most. Snow still exists in western part of the TP in summer. On interannual scale， snow depth in each part decreased slowly from 1980 to 2019， but was not significant in eastern part. The interdecadal variation of snow depth in eastern part is different from the other three parts. The response of snow depth to air temperature and precipitation is different in different parts. There is significant negative correlation between snow depth and air temperature in eastern and central parts， while no significant positive correlation between snow depth and precipitation in all parts. |
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| Keywords: | snow depth Tibetan Plateau spatial difference multi-time scale |
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