干旱区研究 ›› 2024, Vol. 41 ›› Issue (7): 1089-1098.doi: 10.13866/j.azr.2024.07.01 cstr: 32277.14.j.azr.2024.07.01

• 天气与气候 • 上一篇    下一篇

河西走廊东部不同气候态气温变化及其对气候评价的影响

杨晓玲1,2(), 周华1, 陈静1, 赵慧华1, 吴雯1   

  1. 1.武威国家气候观象台,甘肃 武威 733099
    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,中国气象局干旱气候变化与减灾重点开放实验室,甘肃 兰州 730020
  • 收稿日期:2024-02-18 修回日期:2024-05-12 出版日期:2024-07-15 发布日期:2024-08-01
  • 作者简介:杨晓玲(1971-),女,高级工程师,主要从事天气预报及气候变化研究. E-mail: wwqxj6150343@163.com
  • 基金资助:
    国家自然科学基金(42175192);国家自然科学基金(41975015);国家自然科学基金(41775107)

Temperature in different climate states and their influence on climate evaluation in the Hexi Corridor Eastern

YANG Xiaoling1,2(), ZHOU Hua1, CHEN Jing1, ZHAO Huihua1, WU Wen1   

  1. 1. Wuwei National Climate Observation Platform, Wuwei 733099, Gansu, China
    2. Lanzhou Institute of Arid Meteorology of China Meteorological Administration, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Lanzhou 730020, Gansu, China
  • Received:2024-02-18 Revised:2024-05-12 Published:2024-07-15 Online:2024-08-01

摘要:

河西走廊东部是气候变化的敏感区,其气候态的更替对气候评价影响较大。采用河西走廊东部5个国家气象站的1961─2022年逐月气温数据,对比分析河西走廊东部1961─1990年、1971─2000年、1981─2010年和1991─2020年4个气候态气温的差异及其对气候业务评价的影响。结果表明:全区域及各地4个气候态年平均气温均呈升高趋势,P2(1971—2000年气候态)~P4(1991—2020年气候态)气温升高趋势均极显著。从4个气候态气温的差值来看,全区域及各地年、季、月气温基本一致升温,除P3(1981—2010年气候态)和P4外,其他气候态表现为冬季升幅最大,夏季升幅最小,各月升温差异较大,同一季度、同一月份气温升幅存在明显空间差异。气候态平均值更替后,河西走廊东部气温距平明显偏大的特征弱化了,其等级由正距平向负距平方向调整,P1(1961—1990年气候态)~P4年平均气温评价等级高达56%~87%向偏低一级转变,冷冬年份增多17~28 a,暖冬年份减少15~23 a。本研究将为了解河西走廊东部气温的变化规律以及气候业务、决策服务和气象科学研究提供参考依据。

关键词: 气候变暖, 温度气候态, 变化, 气候评价, 河西走廊东部

Abstract:

Hexi Corridor Eastern is an area sensitive to changes in climate and climate states, greatly affecting climate evaluation. Using the monthly temperature data of five national meteorological stations in Hexi Corridor Eastern from 1961 to 2022, differences in the average temperatures of four climate states, including 1961-1990, 1971-2000, 1981-2010 and 1991-2020 were compared, and their influence on the climate assessment business was analyzed. The results showed that the annual temperatures of the four climate states increased in various and whole regions, most notably in the P2 (1971-2000) and P4 (1991-2020) states. The temperature differences in the climate states revealed the following: (1) the monthly, seasonal, and yearly temperatures consistently warmed up in the whole basin and various regions, and (2) except for the P3 (1981-2010) to P4 climate states, others showed maximal and minimal elevation in winter and summer, respectively. The monthly variations in enhanced temperatures were apparent, and the growth rate demonstrated obvious spatial differences in the same season and month. After the replacement of the climate state means, the conspicuous characteristics of temperature variations were weakened in the Hexi Corridor Eastern, and their grades were adjusted from positive to negative; temperature rating was as high as 56%-87% to a lower level; the cold winter years increased by 17-28 years, and the warm winter years reduced by 15-23 years from P1(1961-1990) to P4 climate states. This study can provide a reference for understanding temperature changes, climate business, decision-making service, and meteorological science research in Hexi Corridor Eastern.

Key words: climate warming, temperature climate state, change, climate assessment, Hexi Corridor Eastern