中国西北东部汛期降水主模态的年代际差异及其大气环流特征

doi:10.11755/j.issn.1006-7639(2017)-06-0940

干旱气象

中国西北东部汛期降水主模态的年代际差异及其大气环流特征

马金龙^1,2,3，庞雪琪⁴，杨建玲^1,2,5

1.中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室，宁夏银川 750002;
2.宁夏气象防灾减灾重点实验室，宁夏银川 750002；
3.银川市气象局，宁夏银川 750002；
4.山西省大气探测技术保障中心，山西太原 030002；
5.宁夏回族自治区气候中心，宁夏银川 750002

出版日期:2017-12-29 发布日期:2017-12-29
通讯作者: 杨建玲，研究员，主要从事气候动力学研究. E-mail:yangjianlingbox@sina.com。
作者简介:马金龙（1988— ）女，甘肃通渭人，理学学士，主要从事气象灾害与气象服务工作. E-mail:1206451600@qq.com。
基金资助:
公益性行业（气象）科研专项（GYHY201306027，GYHY201506001-1）、中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目（LPCC201503）及2014年江苏省普通高校研究生科研创新计划项目（KYLX_0830）共同资助

Interdecadal Difference of Dominant Modes of Precipitation in Rainy Season over the Eastern Part of Northwest China and Their Corresponding Atmospheric Circulation Characteristics

MA Jinlong^1,2,3, PANG Xueqi⁴, YANG Jianling^1,2,5

1. Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions, China Meteorological Administration, Yinchuan 750002, China;
2. Key Laboratory of Meteorological Disaster Preventing and Reducing in Ningxia, Yinchuan 750002, China;
3. Yinchuan Meteorological Bureau of Ningxia, Yinchuan 750002, China;
4. Meteorological Observation Technology & Guarantee Center of Shanxi Province, Taiyuan 030002, China;
5. Ningxia Climate Center, Yinchuan 750002, China

Online:2017-12-29 Published:2017-12-29

摘要/Abstract

摘要：

利用1961—2012年中国西北东部156站降水和NCEP/NCAR再分析资料，分析该地区汛期（5—9月）降水特征的变化，构造综合相似指数，将历年汛期降水量场划分为全区一致偏多型、一致偏少型、南多北少型、南少北多型共4类降水类型，其中以全区一致偏少型所占比例最多。在全球气候变暖背景下，全区降水虽仍以一致偏少型为主，但其比例明显减小，而全区一致偏多型比例明显增加。全区一致偏多（少）的降水异常敏感区的中心位置随时间逐渐向东南方向移动，而南多（少）北少（多）型的降水异常敏感区中心位置则随时间逐渐向西北方向移动，两个模态所反映的降水异常敏感区的范围和强度在各年代均有较大差异。夏季西部型南亚高压、乌拉尔山脊显著增强，蒙古气旋加强、西太平洋副热带高压加强，南海、孟加拉湾的暖湿气流深入到中国西北东部地区，是西北东部降水一致偏多的主要大气环流特征。

关键词: 中国西北东部, 汛期降水, 大气环流

Abstract:

Based on the rainfall data at 156 meteorological stations in the eastern part of Northwest China and the NCEP/NCAR reanalysis dataset during 1961-2012, the variation features of precipitation in flood season (May-September) were investigated. According to the synthetic similarity index constructed in this paper, the precipitation fields in flood season over the years were divided into four patterns including the regional consistent more than normal, the regional consistent less than normal, the more in the south and less in the north, the less in the south and more in the north. Among the four patterns, the regional consistent less than normal pattern took the largest proportion. Under the global warming, although the pattern of regional consistent less than normal was dominated in the whole region, its percentage decreased, while that for the pattern of regional consistent more than normal increased distinctly. The central positions of the sensitive districts for the pattern of regional consistent more (less) than normal shifted to southeast over time, but for the pattern of the south more (less) and the north less (more), the central positions moved to northwest. The ranges and intensities of the rainfall anomaly regions responding to the two modes varied in different decades. For this pattern, the atmosphere circulation characteristic in summer could be depicted as the western south Asian high, the Ural ridge, the Mongolia cyclone and the western Pacific subtropical high enhancing significantly, so the warm and moist air from the South China Sea and the Bay of Bengal was transported into the eastern part of Northwest China.

Key words: eastern part of Northwest China, precipitation in flood season, atmospheric circulation

中图分类号:

P426.61+4

马金龙，庞雪琪，杨建玲. 中国西北东部汛期降水主模态的年代际差异及其大气环流特征[J]. 干旱气象, DOI: 10.11755/j.issn.1006-7639(2017)-06-0940.

MA Jinlong, PANG Xueqi, YANG Jianling. Interdecadal Difference of Dominant Modes of Precipitation in Rainy Season over the Eastern Part of Northwest China and Their Corresponding Atmospheric Circulation Characteristics[J]. Journal of Arid Meteorology, DOI: 10.11755/j.issn.1006-7639(2017)-06-0940.

[1]	王健疆, 马浩, 余丽萍, 龚理卿, 汪晨. 2019年浙江省秋旱大气环流特征分析[J]. 干旱气象, 2021, 39(1): 1-7.
[2]	马有绚, 李万志, 王丽霞, 白文蓉, 王紫文. 基于SPI的青海省春季干旱时空演变特征及环流诊断[J]. 干旱气象, 2020, 38(03): 362-370.
[3]	刘晓冉, 胡祖恒, 李永华, 唐红玉. 重庆地区冬季冷暖变化及其异常成因分析[J]. 干旱气象, 2020, 38(03): 404-410.
[4]	罗连升, 徐敏, 何冬燕. 2000年以来淮河流域夏季降水年代际特征及大气环流异常[J]. 干旱气象, 2019, 37(4): 540-549.
[5]	蔡新玲, 李瑜, 李茜, 胡淑兰. 1961—2016年陕西秋淋气候变化特征及其与大气环流和海温的关系[J]. 干旱气象, 2019, 37(2): 226-232.
[6]	胡春丽1，李荣平1，王婷1，李菲2，李琳琳1. 辽宁水稻年景预报模型研究[J]. 干旱气象, 2018, 36(3): 501-.
[7]	阙志萍，吴凡，周军辉. 江西省2015年11月降水异常特征及其成因[J]. 干旱气象, 2018, 36(2): 263-271.
[8]	吴焕波，陈强，谷新波，冯震，王旭东. 一次强沙尘天气过程及其对PM10时空分布的影响[J]. 干旱气象, 2018, 36(1): 117-123.
[9]	张智，崔巍. 银川市腮腺炎异常流行与大气环流的关系研究[J]. 干旱气象, 2017, 35(1): 116-121.
[10]	冯建英，张宇，王素萍. 2016年夏季全国干旱分布及其影响与成因[J]. 干旱气象, 2016, 34(5): 912-917.
[11]	肖科丽，方建刚，王娜，蔡新玲. 陕西8月降水时空分布特征及成因[J]. 干旱气象, 2016, 34(1): 58-63.
[12]	赵中军1，刘善亮2，游大鸣3，王学忠3，胡邦辉3，程一帆4. 偏最小二乘回归模型在辽宁汛期降水预测中的应用[J]. 干旱气象, 2015, 33(6): 1038-1044.
[13]	齐冬梅1，李英1，李跃清1，刘昆鹏2. 2006年高原夏季风强弱变化及其与西南地区东部夏季气温和降水的关系[J]. 干旱气象, 2015, 33(4): 555-565.
[14]	吕廷珍，邓少格，胡轶佳，张凯. 利用年际增量法对西北东部汛期降水的定量预测研究[J]. 干旱气象, 2015, 33(3): 386-394.
[15]	王嘉媛1，胡学平1,2，许平平1,3，王式功1，尚可政1. 西南地区2次秋冬春季持续严重干旱气候成因对比[J]. 干旱气象, 2015, 33(2): 202-212.

中国西北东部汛期降水主模态的年代际差异及其大气环流特征

Interdecadal Difference of Dominant Modes of Precipitation in Rainy Season over the Eastern Part of Northwest China and Their Corresponding Atmospheric Circulation Characteristics

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics