中文摘要：

实际大气都是在复杂条件之下,所以复杂条件带来的问题已成为陆-气相互作用研究领域面临的最大科学挑战,严重制约了该领域研究成果在解决实际天气气候问题中的应用。在概要总结近年来中国复杂条件陆-气作用研究领域进展的基础上,对复杂条件下陆-气相互作用有关的科学问题进行了探讨。从陆面过程和大气边界层这两个陆-气相互作用的关键环节分析了影响陆-气相互作用复杂条件的机制,归纳了复杂条件下陆-气相互作用研究领域面临的关键科学问题。同时,以复杂下垫面陆面过程和非均匀大气边界层问题为重点讨论了突破复杂条件陆-气相互作用关键科学问题的基本思路,并对进一步开展复杂条件陆-气相互作用研究提出了初步的科学建议。

英文摘要：

The real atmosphere is always under complicated conditions.Thereby problems caused by complicated conditions have imposed greatest scientific challenges in land-atmosphere interaction study.Application of research achievements in this field for solving various problems related to weather and climate are severely restricted.This paper presents an overview of recent developments in the study of complicated land-atmosphere interaction in China,and the complicated land-atmosphere interaction is discussed.Mechanisms for land-atmosphere interaction under complex conditions are explored from the perspective of both the land surface and the atmospheric boundary layer processes,which are two critical components of the land-atmosphere interaction.Key problems in land-atmosphere interaction studies under complicated conditions are addressed.Meanwhile,the basic method to investigate land-atmosphere interaction with a focus on complicated land surface processes and non-uniform atmospheric boundary layer has been outlined.Suggestions for further research activities of land-atmosphere interaction have been proposed.