[1]梁红丽,赵梅珠.冷季西进影响云南中西部的昆明准静止锋日变化特征及环流差异[J].山地学报,2026,(1):33-50.[doi:10.16089/j.cnki.1008-2786.000945]
　LIANG Hongli,ZHAO Meizhu.Westward-Moving Kunming Quasi-Stationary Front in Cold Season Threating Central/Western Yunnan of China and Its Diurnal Variation under Circulation Differences[J].Mountain Research,2026,(1):33-50.[doi:10.16089/j.cnki.1008-2786.000945]
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冷季西进影响云南中西部的昆明准静止锋日变化特征及环流差异()

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2026年第1期
页码:
33-50
栏目:
山地环境
出版日期:
2026-02-20

文章信息/Info

Title:
Westward-Moving Kunming Quasi-Stationary Front in Cold Season Threating Central/Western Yunnan of China and Its Diurnal Variation under Circulation Differences
文章编号:
1008-2786-(2026)1-033-18
作者:
梁红丽; 赵梅珠
(云南省气象台,昆明 650034)
Author(s):
LIANG Hongli; ZHAO Meizhu
(Yunnan Meteorological Station, Kunming 650034, China)
关键词:
昆明准静止锋;  西进影响;  日变化;  环流差异;  云南省
Keywords:
the Kunming Quasi-Stationary Front(KQSF);  westward advancement;  diurnal variation;  circulation difference;  Yunnan Province
分类号:
P441
DOI:
10.16089/j.cnki.1008-2786.000945
文献标志码:
A
摘要:
昆明准静止锋(Kunming Quasi-Stationary Front,KQSF)的西进,带来低温雨雪冰冻天气,极大地影响云南的社会经济稳定。从小时尺度上精准揭示KQSF动态演变规律,已成为提升该地区锋面预报能力的迫切需求。本研究基于逐小时多源融合实况分析资料(空间分辨率5 km)和欧洲中期天气预报中心第五代再分析资料(European Centre for Mediun-Range Weather Forecasts Reanalysis v5, ERA5)(空间分辨率0.25°),结合KQSF客观识别技术以及合成分析方法,探讨2022—2023年冷季西进影响云南中、西部的KQSF(中部型和西部型)日变化特征和环流差异。结果表明:(1)中西部型的活动特征存在显著的区域差异。中部型锋面在哀牢山东侧呈东西向摆动,高频活动区随之迁移,傍晚频次达8～10次,强度较高(广义位温梯度4.5×10-2～6.0×10-2 K·km-1); 而西部型锋面表现为持续缓慢西移,高频区西推且频次较低(4～8次),强度有所减弱(梯度3.0×10-2～4.5×10-2 K·km-1)。锋区结构整体呈现断裂特征。(2)上述差异源于西部型与中部型环流配置的不同。西部型高层受强经向脊及夜间Ω型环流引导,中层云南地区南风分量持续增强,暖平流明显西扩,低层伴随强冷高压西伸,构成上暖下冷的斜压结构,推动锋面显著西进,但最终趋于消亡。而中部型各层系统相对较弱且稳定,锋面主要在偏东位置摆动维持,夜间仅东退而不消亡。此外,金沙江和元江河谷作为中部型暖平流增强与传播的关键通道,与锋面北段的加强密切相关。研究结果可为提升云贵高原锋面系统的精细化预报能力及科学认知水平提供理论参考。
Abstract:
The westward advance of the Kunming Quasi-Stationary Front(KQSF)brings low-temperature, rain, snow and freezing weather, greatly challenging the socioeconomic stability in Yunnan, China. An urgent requirement for improving KQSF forecasting capabilities for this region prompts to precisely reveal the dynamic evolution of KQSF at hourly scales.
This study investigated the diurnal characteristics and circulation differences of the KQSF's westard advance into central and western Yunnan(central type and western type)during the cold season of 2022- 2023.This were built on hourly multi-source merged real-time analysis data(spatial resolution: 5 km)and European Centre for Medium-Range Weather Forecasts Reanalysis v5(ERA5)(spatial resolution: 0.25°), combined with objective KQSF identification techniques and composite analysis methods.
(1)This research found that the KQSF westward advancement into central-western Yunnan exhibited significant regional disparities in activity patterns. For the central type, the front oscillated in an east-west orientation on the eastern flank of the Ailao Mountains, with high-frequency activity zones migrating accordingly, reaching 8–10 occurrences in the evening, and displaying higher intensity(generalized potential temperature gradient of 4.5×10-2-6.0×10-2 K·km-1); whereas the western type demonstrated continuous slow westward progression, with high-frequency areas pushing westward and lower frequencies(4-8 occurrences), and attenuated intensity(gradient of 3.0×10-2-4.5×10-2 K·km-1). The frontal zone structure generally exhibited discontinuity features.
(2)These differences originated from distinct circulation configurations between the two types. For the western type, the upper troposphere was guided by strong meridional ridges and nocturnal Ω-shaped circulation, while the middle troposphere over Yunnan had continuously enhanced southerly wind components with marked westward expansion of warm advection, and the lower troposphere were accompanied by westward extension of strong cold high pressure, forming a warm-above-cold-below baroclinic structure which drove significant westward frontal advancement but eventually leaded to its dissipation. In contrast, the central type featured relatively weaker and more stable circulation systems at all tropospheres, with the front mainly oscillating and maintaining in eastern positions, retreating eastward at night without dissipating. Additionally, the Jinsha River and Yuanjiang River valleys in the Yunnan-Guizhou Plateau serve as crucial channels for warm advection enhancement and propagation in the central type, closely related to the intensification of the northern frontal segment.
These findings provide theoretical references for enhancing refined forecasting capabilities and scientific understanding of frontal systems over the Yunnan-Guizhou Plateau.

参考文献/References:

[1] 段旭, 段玮, 王曼, 等. 昆明准静止锋[M]. 北京: 气象出版社, 2017: 1-41. [DUAN Xu, DUAN Wei, WANG Man, et al. Kunming quasi-stationary front [M]. Beijing: Meteorological Press, 2017: 1-41]
[2] 高增勇, 铁步连. 昆明准静止锋的结构与特征[J]. 军事气象文选(1973-1982), 1984: 14-16. [GAO Zengyong, TIE Bulian. Structure and characteristics of Kunming quasi-stationary front [J]. Military Meteorological Anthology(1973-1982), 1984: 14-16]
[3] 段旭, 段玮, 张亚男, 等. 利用锋生函数对2008年年初昆明准静止锋生消过程的诊断分析[J]. 大气科学, 2019, 43(2): 325-338. [DUAN Xu, DUAN Wei, ZHANG Yanan, et al. Diagnostic analysis of frontogenesis and frontolysis of Kunming quasi-stationary front in early 2008 based on frontogenesis function [J]. Chinese Journal of Atmospheric Sciences, 2019, 43(2): 325-338] DOI: 10.3878/j.issn.1006-9895.1807.17300
[4] 梁红丽, 祁文, 陈艳, 等. 一次极端降水过程中不同相态降水过程的锋生特征对比研究[J]. 自然灾害学报, 2018, 27(2): 149-160. [LIANG Hongli, QI Wei, CHEN Yan, et al. A comparative study on frontogenesis characteristics in different phase during an extreme precipitation process [J]. Journal of Natural Disasters, 2018, 27(2): 149-160] DOI: 10.13577/j.jnd.2018.0218
[5] BOSART L F, WASULA A C, DRAG W H, et al. Strong surface fronts over sloping terrain and coastal plains [J]. American Meteorological Society, 2008, 33(55): 35-86. DOI: 10.1175/0065-9401-33.55.35
[6] JENKNER J, SPRENGER M, SCHWENK I, et al. Detection and climatology of fronts in a high-resolution model reanalysis over the Alps [J]. Meteorological Applications, 2010, 17(1): 1-18. DOI: 10.1002/met.142
[7] FENG Mengru, QIN Yujing, LU Chuhan. An objective identification method for wintertime cold fronts in Eurasia [J]. Advances in Atmospheric Sciences, 2021, 38(10): 1695-1705. DOI: 10.1007/s00376-021-0315-8
[8] 王声跃, 张文. 云南地理[M]. 昆明: 云南民族出版社, 2002: 44-50. [WANG Shengyue, ZHANG Wen. Yunnan geography [M]. Kunming: The Nationalities Publishing House of Yunnan, 2002: 44-50]
[9] 张克映, 马友鑫, 李佑荣, 等. 哀牢山过山气流的气候效应[J]. 地理研究, 1992, 11(3): 65-70. [ZHANG Keying, MA Youxin, LI Yourong, et al. On climatic effects of airstreams over the Ailao Mountians [J]. Geographical Research, 1992, 11(3): 65-70] DOI: 10.11821/yj1992030012
[10] 宇如聪, 李建, 原韦华. 云贵高原锋线的动态特征[J]. 气象学报, 2021, 79(6): 889-901. [YU Rucong, LI Jian, YUAN Weihua. The moving characteristics of frontal lines on the Yunnan-Guizhou Plateau [J]. Acta Meteorologica Sinica, 2021, 79(6): 889-901] DOI: 10.11676/qxxb2021.064
[11] 师春香, 潘旸, 谷军霞, 等. 多源气象数据融合格点实况产品研制进展[J]. 气象学报, 2019, 77(4): 774-783. [SHI Chunxiang, PAN Yang, GU Junxia, et al. A review of multi-source meteorological data fusion products [J]. Acta Meteorologica Sinica, 2019, 77(4): 774-783] DOI: 10.11676/qxxb2019.043
[12] 庞紫豪, 谷军霞, 张志强, 等. 多源融合实况分析产品2022年度研发改进及应用进展[J]. 气象科技进展, 2024, 14(5): 37-46. [PANG Zihao, GU Junxia, ZHANG Zhiqiang, et al. Advancement and application of multi-source merged real-time analysis products in 2022 [J]. Advances in Meteorological Science and Technology, 2024, 14(5): 37-46] DOI: 10.3969/j.issn.2095-1973.2024.05.006
[13] 李超, 李华宏, 杨素雨, 等. 国家级多源融合降水产品在云南的适用性评估[J]. 高原山地气象研究, 2021, 41(3): 108-114. [LI Chao, LI Huahong, YANG Suyu, et al. Assessing the applicability of national precipitation merged products in Yunnan [J]. Plateau and Mountain Meteorology Research, 2021, 41(3): 108-114] DOI: 10.3969/j.issn.1674-2184.2021.03.015
[14] 李超, 李影芝, 杨素雨, 等. 国家级多源融合温度产品在云南的适用性评估[J]. 高原山地气象研究, 2023, 43(1): 104-110. [LI Chao, LI Yingzhi, YANG Suyu, et al. Applicability assessment of national-level multi-source fusion temperature products in Yunnan [J]. Plateau and Mountain Meteorology Research, 2023, 43(1): 104-110] DOI: 10.3969/j.issn.1674-2184.2023.01.013
[15] 段旭, 段玮, 邢冬. 昆明准静止锋客观判识方法研究[J]. 气象学报, 2017, 75(5): 811-822. [DUAN Xu, DUAN Wei, XING Dong. A study of objective determination method for the Kunming quasi-stationary frontline [J]. Acta Meteorologica Sinica, 2017, 75(5): 811-822] DOI: 10.11676/qxxb2017.055
[16] GAO Ni, LI Jian, YU Rucong, et al. Quantitative characteristics of the quasi-stationary front anchored over the steep terrain on the Yungui Plateau [J]. Atmospheric Research, 2025, 315: 107902. DOI: 10.1016/j.atmosres.2024.107902
[17] 段旭, 张亚男, 梁红丽. 三种温湿参数下昆明准静止锋锋面位置及锋生函数诊断的对比分析[J]. 大气科学, 2018, 42(2): 301-310. [DUAN Xu, ZHANG Yanan, LIANG Hongli. A comparative analysis of the Kunming quasi-stationary frontal position and frontogenesis function with three different temperature and humidity parameters [J]. Chinese Journal of Atmospheric Sciences, 2018, 42(2): 301-310] DOI: 10.3878/j.issn.1006-9895.1709.17116

备注/Memo

备注/Memo:
收稿日期(Received date): 2025-11- 02; 改回日期(Accepted date):2026- 02-13
基金项目(Foundation item): 国家自然科学基金(42365001); 中国气象局复盘总结专项(FPZJ2024-122); 云南省气象局科研项目(YZ202540)。[National Natural Science Foundation of China(42365001); China Meteorological Administration Resumed Summary Project(FPZJ2024-122); Scientific Research Project of Yunnan Meteorological Bureau(YZ202540)]
作者简介(Biography): 梁红丽(1973-),女,云南曲靖人,硕士,正高级工程师,主要研究方向:灾害性天气机理。[LIANG Hongli(1973-), female, born in Qujing, Yunnan Province, M.Sc., professor of engineering, research on mechanism of disastrous weather] E-mail: lhl1678@163.com
更新日期/Last Update: 2026-01-30