青藏高原夏季局地陆气相互作用及其对对流触发的影响研究综述

A review of local land-air interactions and their impact on convective triggering in summer on the Tibetan Plateau

  • 摘要: 陆地与大气之间的相互作用和反馈非常复杂,需要从多个尺度进行定量、综合和过程层面的理解。局地陆气相互作用是指通过局地尺度上研究陆地表面和大气(即行星边界层(PBL))之间的联系,进而理解其对天气气候的影响,因此局地陆气相互作用采用过程链范式,研究比如从土壤湿度到降水之间的联系和链条。青藏高原陆气相互作用及其影响在过去几十年取得了长足进展,但是局地陆气相互作用及其对高原影响的研究相对滞后于大尺度陆气相互作用及其影响的研究。该文系统梳理了青藏高原局地陆气相互作用观测事实、局地陆气相互强度及其空间差异和造成这种差异的成因及机理,最后总结了当前研究的难点及未来的发展方向。

     

    Abstract: Land-atmosphere interactions and feedback mechanisms are inherently complex, necessitating a quantitative, integrative, and process-oriented understanding across multiple scales. Local land-atmosphere interactions pertain to the examination of the relationship between the land surface and the atmosphere, specifically within the planetary boundary layer (PBL), at a localized scale. This understanding is crucial for assessing the implications of these interactions on weather and climate, and it employs a process chain paradigm to investigate connections, such as that between soil moisture and precipitation. While significant advancements have been made in understanding land-atmosphere interactions and their effects on the Tibetan Plateau (TP) over recent decades, research focusing on local land-atmosphere interactions and their consequences on the TP remains comparatively underdeveloped when juxtaposed with studies of large-scale interactions. This paper aims to systematically review observational data regarding local land-atmosphere interactions on the Tibetan Plateau (TP), analyze the strengths of these interactions and their spatial variations, explore the underlying causes and mechanisms of such variations, and ultimately outline the current research challenges and future directions for development in this field.

     

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