干旱气象 ›› 2021, Vol. 39 ›› Issue (1): 38-45.

• 论文 • 上一篇    下一篇

气候变化背景下宁夏冬季气温月尺度变化特征

高娜,孙健,高睿娜,王素艳#br#   

  1. (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,宁夏气象防灾减灾重点实验室,
    宁夏银川750002;2.宁夏回族自治区气候中心,宁夏银川750002;3.宁夏气象局,宁夏银川750002)

  • 出版日期:2021-03-01 发布日期:2021-03-10
  • 作者简介:高娜(1987— ),女,汉族,硕士,主要从事气候监测、预测和气候变化、气候资源开发与利用方面的工作. E-mail: gn198779@163.com。
  • 基金资助:
    宁夏青年托举人才培养工程和宁夏青年拔尖人才培养工程共同资助

Analysis of Monthly Variation of Winter Temperature in Ningxia Under Climate Changes

GAO Na1,2, SUN Jian1,3, GAO Ruina1,2, WANG Suyan1,2   

  1. (1. Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk
     Management of Characteristic Agriculture in Arid Regions, CMA, Key Laboratory of
     Meteorological Disaster Preventing and Reducing of Ningxia, Yinchuan 750002, China;
    2. Ningxia Hui Autonomous Region Climate Center,Yinchuan 750002, China;
    3. Ningxia Meteorological Bureau, Yinchuan 750002, China)

  • Online:2021-03-01 Published:2021-03-10

摘要: 基于宁夏20个气象站1961—2018年气象观测资料,利用季节经验正交函数(S-EOF)分析宁夏冬季气温月尺度变化特征。结果表明:宁夏冬季气温S-EOF分析第1模态各月空间型均表现为全区一致型;第2、第3模态各月空间型呈冷暖交替的分布特征。其中第2模态12月空间型表现为偏冷(暖)时1、2月表现为偏暖(冷)特征;第3模态12月及1月空间型偏暖(冷)时2月为偏冷(暖)特征。第2、第3模态时空分布与12月至次年2月乌拉尔山高压脊、西伯利亚高压、东亚大槽月尺度上的强弱调整过程存在很好的对应关系,当乌拉尔山高压脊和东亚大槽偏强、西伯利亚高压增强时,有利于对应月份气温偏低,反之亦然。

关键词: 关键词:宁夏, 冬季气温, 月尺度变化

Abstract: Based on the observation data from 20 meteorological stations in Ningxia during 1961-2018, variation characteristics of winter temperature in Ningxia were analyzed on the monthly timescale using S-EOF. The results show that the spatial patterns in each month of the first mode of S-EOF analysis were characterized by region-wide uniform. The spatial patterns of the second and third modes in each month were marked by an alternation of warm and cold phases. The spatial patterns of the second mode in December presented partial cold (warm), and in January and February it presented warm (cold). The spatial patterns of the third mode in December and January presented partial cold (warm), and in February it presented warm (cold). The temporal and spatial distributions of the second and third modes were in good correspondence with the intensity adjustment processes of the Ural mountain ridge, Siberia high alternation and East Asia trough on the monthly timescale from December to February. When the Ural high ridge and the East Asian trough were stronger, and the Siberia high was strengthened, the temperature in corresponding months was low, and vice versa.


Key words: Key words: Ningxia, winter temperature, variation on the monthly timescale