Seasonal and Diurnal Changes of Atmosphere-Land Interaction over Mongolia 

作成者 Miyazaki, Shin, Yasunari, Tetsuzo, Tsohiogiin Adyasuren
日本十進分類法 (NDC) 450.92
内容 研究概要:The Eurasian Continent is the largest continent on the earth which consists of various kinds of climates and surface conditions such as tropical rain forest, humid temperate climate, desert, steppe, glass land, taiga, tundra and so on. The surface condition which is including vegetation of Eurasian Continent plays very important role in the formation of global climate. Mongolia is one of the largest plateau in Eurasian Continent and plays a great role in dry air mass formation and structure change of Baiu front (Kato, 1985, 1987), which is one of the most important phenomena in Asian Monsoon region. Therefore it is very important to investigate the characteristics of climate over Mongolia to clarify its role on the global climate. The purpose of this study is to investigate characteristics of seasonal and diurnal change of surface meteorological elements and surface heat balance. These are very important factor to understand atmosphere-land interaction and air mass formation over Mongolia. Thus, surface meteorological observation has been carried out from 30 September of 1993 up to now, to study the diurnal and seasonal variation of surface meteorological elements by using AANDERA Automatic Weather Station (AWS) in the Baruunkharaa (48°55'N, 106°4'E) in the Northern part of Mongolia. The results are summarized as follows: Some abrupt changes of surface meteorological elements are recognized in transitional seasons simultaneously in Baruunkharaa in the Northern part of Mongolia by analyzed AWS data from late September 1993 to mid-November 1994. Abrupt decrease of T (air temperature (20℃)), q (specific humidity (2g/kg)) and abrupt increase of albedo occurred in mid-November 1994, which suggest that abrupt decrease of T and q might be related to surface snow cover. From mid-November to mid-February there might be stable snow cover (albedo was more than 0.5) on the surface. In this period T was below -15℃ and net radiation expressed negative value
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
掲載誌情報 Proceedings of the international symposium on "The role of remote sensing for the environmental issues in arid and semi-arid regions" page.49-56 (1997)
言語 英語

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