收稿日期: 2022-11-25
修回日期: 2023-04-24
网络出版日期: 2023-04-24
基金资助
国家自然科学基金项目(42105021); 云南省重点研发计划-社会发展专项(202203AC100005); 中国气象局创新发展专项(CXFZ2022J021); 云南省气象局创新团队项目(2022CX02)
The Spatial-temporal Distribution of the Difference in Summer Precipitation Difference Over Two Sides of the Ailao Mountain and Its Relationship with Monsoons
Received date: 2022-11-25
Revised date: 2023-04-24
Online published: 2023-04-24
运用国家站观测资料、 全球气候再分析资料和数值模式敏感性试验数据, 对哀牢山两侧夏季总降水量差异及其影响云南省夏季气候的主要季风系统-东亚夏季风和印度夏季风的关系进行了分析。结果表明: 哀牢山主脉西侧夏季总降水量明显大于主脉东侧。比较哀牢山主脉两侧的5组国家站观测数据显示, 哀牢山主脉南部夏季总降水量差异高于北部夏季总降水量差异, 并且哀牢山主脉北部两侧夏季总降水量差异与主脉南部两侧夏季总降水量差异呈现出一定的负相关性。5组站点夏季总降水量差异整体与东亚夏季风指数呈负相关关系, 与印度夏季风指数呈正相关关系。哀牢山两侧站点夏季总降水量差异与季风交界面指数的相关性要高于其与单一东亚夏季风或印度夏季风的相关性。通过分别选取季风交界面指数正负异常年, 并交换风场或水汽边界条件设计数值模式敏感性试验, 定量探究两支季风的相对强弱对于哀牢山两侧站点夏季总降水量差异的贡献。结果表明, 两支季风共同控制的异常风场是造成哀牢山两侧夏季总降水量差异的主要原因。相比之下, 季风带来的水汽条件差异对于哀牢山两侧的夏季总降水量有着相近的影响, 对于夏季总降水量差异变化的贡献较弱。
连钰 , 许彦艳 , 李华宏 , 蔡磊 . 哀牢山两侧夏季降水差异的时空分布特征和季风的相关性研究[J]. 高原气象, 2024 , 43(4) : 1026 -1038 . DOI: 10.7522/j.issn.1000-0534.2023.00038
This study examines the inter-annual variation of the difference in summer precipitation over the east and west side of the Ailao Mountain, as well as its relationship between the East Asia summer monsoon and the South Asia summer monsoon based on in situ observations, reanalysis products and model sensitivity experiments.As the result, climatological statistics show that there is more precipitation on the west side than on the east side of the Ailao Mountain.Compared to the total summer precipitation amount observed over five pairs of state-level weather stations, the difference is higher on the north part than on the south part, with negative correlations to some extent.The observed differences in precipitation are generally with a negative correlation between the East Asia summer monsoon index, and with a positive correlation between the South Asia summer monsoon index.The linear correlation coefficients with the index of monsoon interface, which stands for the relative strengths of the East Asia and South Asia monsoons, are higher than those with one single monsoon.With one positive and one negative year selected based on the index of monsoon interface, we design and conduct a set of model sensitivity experiments through changing the boundary condition of wind and water vapor fields respectively to quantify the impact on precipitation difference of monsoons.The result shows that the anomaly in the wind field is the major contributing factor of the difference in precipitation on the two sides of the Ailao Mountain.On the other hand, the anomaly in the water vapor field makes synchronized changes in precipitation on both sides of the mountain, while it contributes little to the precipitation difference.
null | |
null | |
null | |
null | |
null | |
null | |
null | |
null | National Centers for Environmental Prediction/National Weather Service/NOAA/U.S.Department of Commerce.2000, updated daily.NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999.Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. |
null | |
null | |
null | |
null | |
null | |
null | 段玮, 肖子牛, 周泓, 2017.一次典型川滇切变线暴雨过程的诊断分析[J].暴雨灾害, 36(3): 200-206.DOI: 10.3969/j.issn. 1004-9045.2017.03.002.Duan W , |
null | |
null | 郭渠, 黄安宁, 付志鹏, 等, 2021.北京气候中心次季节-季节预测系统对西南地区夏季降水次季节预报技巧评估及误差订正[J].高原气象, 40(3): 644-655.DOI: 10.7522/j.issn.1000-0534.2020.00028.Guo Q , |
null | |
null | 胡金明, 何大明, 李运刚, 2011.从湿季降水分异论哀牢山季风交汇[J].地球科学进展, 26(2): 183-192.DOI: 10.11867/j.issn.1001-8166.2011.02.0183.Hu J M , |
null | |
null | 桓玉, 李跃清, 2018.夏季东亚季风和南亚季风协同作用与我国南方夏季降水异常的关系[J].高原气象, 37(6): 1563-1577.DOI: 10.7522/j.issn.1000-0534.2018.00044.Huan Y , |
null | |
null | 黄子立, 吴小飞, 毛江玉, 2021.CMIP6模式水平分辨率对模拟我国西南地区夏季极端降水的影响评估[J].高原气象, 40(6): 1470-1483.DOI: 10.7522/j.issn.1000-0534.2021.zk010.Huang Z L , |
null | |
null | 秦剑, 琚建华, 解明恩, 等, 1997.低纬高原天气气候[M].北京: 气象出版社, 17, 66-69.Qin J, Ju J H, Xie M E, et al, 1997.Low latitude plateau weather and climate[M].Beijing: China Meteorological Press, 17, 66-69. |
null | 尚升海, 角媛梅, 刘澄静, 等, 2019.哀牢山区降水时空变化及其阻隔效应研究[J].西南大学学报(自然科学版), 41(8): 92-98. |
null | |
null | 王声跃, 张文, 2002.云南地理[M].昆明: 云南民族出版社, 44-50. |
null | |
null | 王霞斐, 1979.地形对云南气候的影响[J].云南师范大学学报(哲学社会科学版)(5): 87-89. |
null | |
null | 万云霞, 晏红明, 金燕, 等, 2020.低纬高原水汽输送特征及其对云南气候的影响[J].高原气象, 39(5): 925-934.DOI: 10.7522/j.issn.1000-0534.2019.00082.Wan Y X , |
null | |
null | 吴遥, 李跃清, 蒋兴文, 等, 2017.WRF模拟青藏高原东南部极端旱涝年降水的参数敏感性研究[J].高原气象, 36(3): 619-631.DOI: 10.7522/j.issn.1000-0534.2016.00057.Wu Y , |
null | |
null | 许美玲, 段旭, 杞明辉, 等, 2011.云南省天气预报员手册[M].北京: 气象出版社, 8.Xu M L, Duan X, Qi M H, et al, 2011.Yunnan Province weather forecaster manual[M].Beijing: China Meteorological Press, 8. |
null | 张克映, 1963.滇南气候的特徵及其形成因子的初步分析[J].气象学报, 33(2): 218-230.DOI: 10.11676/qxxb1963.021.Zhang K Y , 1963.A preliminary analysis of climate characteristics and its forming factors in southern Yunnan[J].Acta Meteorologica Sinica, 33(2): 218-230.DOI: 10.11676/qxxb1963.021 . |
null | |
null | |
null | 张克映, 张一平, 刘玉洪, 等, 1994.哀牢山降水垂直分布特征[J].地理科学, 14(2): 144-151+199.DOI: 10.1051/jp4: 20040017.Zhang K Y , |
null |
/
〈 |
|
〉 |