WEI Chengqiang,ZHAO Pengguo.Cloud Macrophysical and Microphysical Properties and Vertical Structure Distribution Characteristics over the Tibetan Plateau and its Adjacent Regions[J].Journal of Chengdu University of Information Technology,2025,40(05):643-651.[doi:10.16836/j.cnki.jcuit.2025.05.011]
青藏高原及其临近区域云特性及云垂直结构分布特征
- Title:
- Cloud Macrophysical and Microphysical Properties and Vertical Structure Distribution Characteristics over the Tibetan Plateau and its Adjacent Regions
- 文章编号:
- 2096-1618(2025)05-0643-09
- Keywords:
- cloud properties; cloud vertical structure; Tibetan Plateau; Sichuan Basin; Indo-Gangetic Plain
- 分类号:
- P426.5
- 文献标志码:
- A
- 摘要:
- 针对青藏高原及其周边不同区域之间云的差异,基于1998-2015年CLARA-A2的云特性资料和1998-2014年TRMM 3A12的水凝物资料,划分高原西部、恒河平原和四川盆地3个研究区域,对青藏高原及其周边地区的云宏微观特性的空间分布、年际变化、月变化和水凝物垂直结构进行分析。结果表明:(1)3个区域的的云微观特性(液云粒子有效半径、液水路径、液云光学厚度、冰云粒子有效半径、冰水路径和冰云光学厚度)和宏观特性(云顶高度和云量)均存在明显的空间分布差异。(2)1998-2015年,3个区域云的微观特性的年际变化较明显,宏观特性的年际变化并不大。(3)3个区域液云和冰云粒子有效半径的月变化不明显,其他的云宏微观特性均有明显的月变化。(4)云水含量在3个区域均为单峰的垂直结构特征,雨水含量在3个区域均为在近地面处最大,随着高度增加减小的的特征; 高原西部暖季的云冰含量表现出双峰的垂直结构特征,其他两个地区的云冰含量表现为单峰结构特征。
- Abstract:
- Based on the cloud characteristics data of CLARA-A2 from 1998 to 2015 and the water condensate data of TRMM 3A12 from 1998 to 2014,this study focuses on the differences in clouds between different regions of the Tibet Plateau and its surrounding areas.Three study areas were divided,including the western part of the Tibet Plateau,the Ganges Plain,and the Sichuan Basin,to analyze the spatial distribution,interannual and monthly variations,as well as the vertical structure of cloud properties in the Tibet Plateau and its surrounding areas.The results indicate that:(1)there are significant spatial distribution differences in the cloud micro properties(effective radius of liquid cloud particles,liquid water path,optical thickness of liquid cloud,effective radius of ice cloud particles,ice water path,and optical thickness of ice cloud)and macro properties(cloud top height and cloud cover)in the three regions.(2)From 1998 to 2015,the interannual changes in the micro properties of clouds in the three regions were relatively significant,while the interannual changes in the macro properties were not significant.(3)The monthly variation of the effective radius of liquid cloud and ice cloud particles in the three regions is not significant,while the macroscopic and microscopic properties of other clouds show significant monthly variations.(4)The cloud water content exhibits a single peak vertical structural feature in all three regions,while the rainwater content is highest near the ground level in all three regions and decreases with increasing height; The cloud ice content in the warm season of the western plateau shows a bimodal vertical structure,while the cloud ice content in the other two regions shows a unimodal structure.
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备注/Memo
收稿日期:2024-01-22
基金项目:国家自然科学基金资助项目(42075086、41905126)
通信作者:赵鹏国.E-mail:zpg@cuit.edu.cn