干旱区研究 ›› 2023, Vol. 40 ›› Issue (6): 863-873.doi: 10.13866/j.azr.2023.06.02

• 天气与气候 • 上一篇    下一篇

中国西北地区太阳辐射时空分异特征

姚玉璧1,2(),郑绍忠1,董宏昌3(),石界3,张民1,夏权1   

  1. 1.兰州资源环境职业技术大学,黄河流域生态环境产教融合研究院,甘肃省气候资源利用与防灾减灾重点实验室,甘肃 兰州 730021
    2.中国气象局兰州干旱气象研究所,甘肃 兰州 730020
    3.甘肃省定西市气象局,甘肃 定西 743000
  • 收稿日期:2022-08-19 修回日期:2023-02-21 出版日期:2023-06-15 发布日期:2023-06-21
  • 通讯作者: 董宏昌. E-mail: dsg327@163.com
  • 作者简介:姚玉璧(1962-),男,研究员级高级工程师,主要从事气候变化对农业与生态的影响研究. E-mail: yaoyubi@163.com
  • 基金资助:
    甘肃省高等学校产业支撑计划项目“一带一路”太阳能高辐射区光能开发潜力与利用效率评估研究及应用(2020C-34);甘肃省自然科学基金(21JR7RA772);兰州资源环境职业技术大学重大科技项目(XJZD2023-03)

Anomaly temporal-spatial distribution of solar radiation in Northwest China

YAO Yubi1,2(),ZHENG Shaozhong1,DONG Hongchang3(),SHI Jie3,ZHANG Min1,XIA Quan1   

  1. 1. Lanzhou Resources & Environment Voc-Tech University, Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Key Laboratory of Climate Resources Utilization and Disaster Prevention and Mitigation of Gansu Province, Lanzhou 730021, Gansu, China
    2. Lanzhou Institute of Arid Meteorology under China Meteorological Administration, Lanzhou 730020, Gansu, China
    3. Meteorological Bureau of Dingxi of Gansu Province, Dingxi 743000, Gansu, China
  • Received:2022-08-19 Revised:2023-02-21 Online:2023-06-15 Published:2023-06-21

摘要:

应用近60 a中国西北169个国家基本气象站气象观测资料,对中国西北总辐射的时域变化、空间分布和次区域时空演变特征进行了研究。结果表明:(1) 青海西北部的柴达木盆地和甘肃西部为太阳能资源最丰富区,陕西南部和甘肃东南部的较小区域为资源丰富区,其余大面积区域均为资源很丰富区。(2) 1961—2020年除新疆西南部、甘肃和新疆接壤区、甘肃北部和陕西北部的小范围区域总辐射呈上升趋势外,西北大部分区域总辐射呈下降趋势。(3) EOF第一模态特征向量场表明,总辐射振荡强度由西向东加强,各分量高载荷区主要集中于中东部,该区域是总辐射易出现异常、振荡强且敏感的地区。(4) EOF第二模态特征向量场自西向东呈双偶极子型;青海全境和甘肃大部为正值区域,也是总辐射异常振荡最强的区域。(5) 依据REOF特征向量不同模态空间分异结构类型,可将研究区域划分为主要受东亚季风影响的“西北东部异常型”、主要受东亚季风影响边缘区的“西北中部异常型”和主要受西风带影响的“西北西部异常型”等 3个次区域。3个次区域总辐射减少的突变点分别出现在1973年、2017年和2008年。

关键词: 总辐射, 空间异常分型, 次区域变化, 中国西北

Abstract:

The temporal variation, spatial distribution, and temporal and spatial evolution characteristics of the total radiation in Northwest China were studied using meteorological observation data from 169 national meteorological stations in Northwest China, over the past 60 years. The Qaidam Basin in the Northwest of Qinghai and the west of Gansu were the most abundant areas for solar energy resources, the smaller areas in the south of Shaanxi and the southeast of Gansu were found to be resource rich areas, and the other large areas are resource rich areas. From 1961 to 2020, the total radiation showed an upward trend in Southwest Xinjiang, the border area between Gansu and Xinjiang, and smaller areas in northern Gansu and northern Shaanxi, while the total radiation showed a downward trend in most regions of Northwest China. The eigenvector field of EOF mode 1 shows that the total radiation oscillation intensifies from west to east, and the high load area for each component is mainly concentrated in the middle and east, which is the region where the total radiation is prone to be abnormal and the oscillation is strong and sensitive. The eigenvector field of the second EOF mode presents a dipole type from west to east. Qinghai and most of the Gansu are positive regions, which are also the regions with the strongest total radiation and abnormal oscillation. According to the different modal spatial differentiation structure types for the REOF eigenvectors, the study area can be divided into three sub regions, namely: “Eastern northwest anomaly type” which is affected by the East Asian monsoon; “Central northwest anomaly type” which is the marginal region and mainly affected by the East Asian monsoon; and “Western Northwest anomaly type” which is mainly affected by the westerlies. The mutation points for total radiation reduction in the three subregions occurred in 1973, 2017, and 2008 respectively.

Key words: total radiation, spatial anomaly typing, subregional changes, Northwest China