CAJ | 학술논문

亚洲是目前世界上经济发展最快的地区,其所带来的区域气候环境问题以及对全球气候环境的可能影响成为当前科学界关注的一个重要课题.一些研究表明,夏季亚洲季风区是边界层大气成分(包括污染物)进入全球平流层的一个重要通道,其中青藏高原由于高大地形的作用而具有重要的地位.从以下几个方面介绍了研究进展及存在的问题:夏季亚洲季风区上对流层/下平流层(UTLS)大气成分及对流层顶气溶胶层的分布特征、卷云及深对流活动特征、夏季南亚高压反气旋环流特征及其对大气成分分布的作用.指出南亚高压反气旋控制区不仅是对流层示踪物的高值区和平流层示踪物的低值区,同时也是气溶胶和卷云覆盖率的大值区,因而是全球比较特殊的地区,从而可以进一步通过大气辐射、微物理、异相化学等过程对区域甚至全球气候环境产生重要影响.比较了亚洲季风区与北美季风区大气成分在UTLS区域分布的异同,讨论了深对流快速输送和大尺度缓慢输送这两种不同尺度过程在大气成分分布的可能作用,尤其对于不同大气成分输送作用的差异,并讨论了南亚高压两种不同模态对UTLS区域大气成分分布的重要作用.最后提出了未来青藏高原对流层—平流层相互作用及其气候效应研究中需要关注的一些关键科学问题.
아주시목전세계상경제발전최쾌적지구,기소대래적구역기후배경문제이급대전구기후배경적가능영향성위당전과학계관주적일개중요과제.일사연구표명,하계아주계풍구시변계층대기성분(포괄오염물)진입전구평류층적일개중요통도,기중청장고원유우고대지형적작용이구유중요적지위.종이하궤개방면개소료연구진전급존재적문제:하계아주계풍구상대류층/하평류층(UTLS)대기성분급대류층정기용효층적분포특정、권운급심대류활동특정、하계남아고압반기선배류특정급기대대기성분분포적작용.지출남아고압반기선공제구불부시대류층시종물적고치구화평류층시종물적저치구,동시야시기용효화권운복개솔적대치구,인이시전구비교특수적지구,종이가이진일보통과대기복사、미물리、이상화학등과정대구역심지전구기후배경산생중요영향.비교료아주계풍구여북미계풍구대기성분재UTLS구역분포적이동,토론료심대류쾌속수송화대척도완만수송저량충불동척도과정재대기성분분포적가능작용,우기대우불동대기성분수송작용적차이,병토론료남아고압량충불동모태대UTLS구역대기성분분포적중요작용.최후제출료미래청장고원대류층—평류층상호작용급기기후효응연구중수요관주적일사관건과학문제.
@@@@Currently, Asia is the world’s fastest growing economic region, which will lead to regional and even global climatic and environmental issues, and these issues are becoming an important topic of concern for the scientific community. Some studies indicate that the Asian summer monsoon region provides a key pathway for the boundary layer species transport into the global stratosphere, in which the Tibetan Plateau plays an important role due to its tall and huge terrain. In this review, a few key scientific aspects and related issues are discussed as follows:atmospheric composition distribution in the upper troposphere and lower stratosphere (UTLS), tropopause aerosol layer, cirrus and deep convection activity over the Asian summer monsoon region, and variation of South Asia high and its impact on UTLS species distribution. It is pointed out that the region controlled by the Asian summer monsoon anticyclone is special in the boreal summer for its enchanced troposheric tracers, aerosol, and cirrus fraction, and dehanced stratospheric tracers, which will have an important impact on regional and even global climate and environment through atmospheric radiation, microphysical and out-of-phase chemical processes. Inter-comparison is conducted between the Asian summer monsoon and the North American summer monsoon on the distribution of various species in the UTLS region, and the respective transportation roles of deep convection activity and large-scale circulation are discussed in determining the distribution of atmospheric species, particularly the variance on different species. Finally, a few critical scientific topics are put forward for future investigation on the stratosphere-troposphere interaction over the Tibetan Plateau and its impact on climate and environment.