中国西北地区逆温时空变化
沙贝宁(1999-),女,硕士研究生,主要从事人文地理与地域人地关系研究. E-mail: s_991024@163.com |
收稿日期: 2024-04-02
修回日期: 2024-07-16
网络出版日期: 2025-08-13
基金资助
国家自然科学基金项目(42161004)
第三次新疆综合科学考察项目(2021xjkk0406)
Spatial and temporal distribution characteristics of the temperature inversion in Northwest China
Received date: 2024-04-02
Revised date: 2024-07-16
Online published: 2025-08-13
沙贝宁 , 杨余辉 , 黄佛君 , 叶茂 . 中国西北地区逆温时空变化[J]. 干旱区研究, 2025 , 42(3) : 397 -408 . DOI: 10.13866/j.azr.2025.03.01
Based on the data from 19 sounding stations in 2022-2023, this study investigates the temporal and spatial variations of the temperature inversions in the lower, middle, and upper troposphere in northwest China. The results indicated the following: (1) In terms of monthly variations, inversions across all three tropospheric levels exhibit similar patterns, peaking in December and January-February of the following year and reaching a minimum from June to August. (2) In terms of spatial distribution, among the low-level inversions, low-level inversions were most frequent in northern Xinjiang, at 40%-60%; the greatest thickness of low-level inversions was observed in northern Shanxi, exceeding 90 m; the intensity of low-level inversions was stronger in most areas of Xinjiang, ranging from 2 ℃ and 3 ℃. For mid-level inversions, their frequency was highest in Qinghai and decrease outward from this region. High-level inversions were most pronounced in northern Xinjiang, with their frequency decreasing outward from this region. (3) The occurrence of low-level inversions in northwest China is influenced by surface radiation and topography, the occurrence of mid-level inversions is associated with warm advection and subsidence movement, and the occurrence of high-level inversions may be related to the top of the temperate troposphere and ozone. (4) In the summer of northwest China, influenced by solar radiation and surface cooling. below the 0 ℃ isotherm height, the intensity of inversions is stronger; above the 0 ℃ isotherm height, the inversions have weaker intensity.
表1 西北地区夏季0 ℃层高度与逆温强度关系Tab. 1 Relationship between 0 ℃ isotherm height and temperature inversion intensity in the Northwest China |
站点 编号 | 站点 名称 | 夏季0 ℃ 层高度 /m | 夏季0 ℃层高 度以下逆温 强度/℃ | 夏季0 ℃层 高度以上逆 温强度/℃ |
---|---|---|---|---|
51076 | 阿勒泰 | 3828 | 2.3 | 3.81 |
51644 | 库车 | 4665 | 2.54 | 0.7 |
51709 | 喀什 | 4941 | 1.27 | 0.77 |
51828 | 和田 | 5228 | 0.95 | 0.73 |
51839 | 民丰 | 5202 | 2.6 | 0.61 |
52203 | 哈密 | 4641 | 1.94 | 0.72 |
52323 | 马鬃山 | 4716 | 1.29 | 0.51 |
52681 | 民勤 | 4970 | 1.3 | 0.32 |
52983 | 榆中 | 5069 | 0.75 | 0.24 |
53915 | 崆峒 | 4972 | 0.89 | 0.2 |
56080 | 合作 | 5159 | 0.5 | 0.18 |
52818 | 格尔木 | 5494 | 0.46 | 0.37 |
52836 | 都兰 | 5468 | 0.68 | 0.37 |
52866 | 西宁 | 5044 | 0.46 | 0.36 |
56029 | 玉树 | 5599 | 0.66 | 0.17 |
53614 | 银川 | 4872 | 1.12 | 0.3 |
53845 | 延安 | 4770 | 1.33 | 0.21 |
57127 | 汉中 | 5148 | 0.88 | 0.23 |
57131 | 泾河 | 5043 | 0.82 | 0.2 |
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