%0 Journal Article
%T IMPACT OF UPLIFT OF QINGHAI-XIZANG PLATEAU AND CHANGE OF LAND-OCEAN DISTRIBUTION ONCLIMATE OVER ASIA<br>青藏高原隆起及海陆分布变化对亚洲大陆气候的影响
%A Chen Longxun
%A Liu Jiping
%A Zhou Xiuji
%A Wang Pinxian
%A <br>陈隆勋
%A 刘骥平
%A 周秀骥
%A 汪品先
%J 第四纪研究
%D 1999
%I 
%X Using an improved CCMI/NCAR climate dynamic model and a combinationdistribution of land-ocean- vegetation during 40- 50Ma B. P. (fig. 1), a series ofnumerical experiments representing different stages of the Qinghai-Xizang Plateau(QTP) uplifting and different land-ocean distributions are designed to assess theinfluence of the plateau uplifting and land-ocean distribution variation on Asianclimate changes. The simulated restilts of the control test are close to the presentChinese climatic observations. During 40-50 Ma B.P., the simulated Chinese climateis dry and hot along with little rainfall in the most region aside from some of WestChina.In the course from the ancient stage to the initial stage of the QTP uplift,thesimulated rainfall in China does not obviously increase, but from initial uplift to halfheight of modem QTP the simulated yearly precipitation amplifies in China (Fig.2).However, the rainfall, particularly in the west part of China decreases except forYunnan and Guizhou and Sichuan as the QTP continues to rise, which suggests thatin so far as rainfall is concerned, there possibly exists a 'critical height' that is ashigh as half of the present QTP. From 40-50 MaB. P. to modem time,thetemperature of China obviously becomes cold (Fig.3). There does not exist a 'criticalheight' in temperature. Under the ancient condition, in the eastern Asia there are nomodern low-level winter monsoon (Fig. 4) in mid-latitudes and monsoon in tropicsand tWo upper-level strong westerly jets and the merge of the two jets downstream ofQTP (Fig. 5). In summer the SW monsoon enters into the mainland and changesdirection and then reaches West China, resulting in the circulation condition which is helpful to much precipitation (Fig. 6, 7). The effect of the plateau uplift on the Chinese climate predominantly makes the place colder and from the early stage to the half height the rainfall in China remarkably amplifies (specially in the west part of China). However, with the continuing uplift the rainfall quickly decreases, particular in the northwest of China.
%K uplift of Qinghai-Xizang Plateau
%K paleo-land and ocean distribution
%K Asian paleo-climate<br>青藏高原隆起
%K 古海陆分布
%K 古亚洲气候
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=EA07051745CDC8D89D5F01A3A4CFE6A9&aid=873D11A042A8265E9EBF4BF7BFF88112&yid=B914830F5B1D1078&vid=2A8D03AD8076A2E3&iid=E158A972A605785F&sid=AA5FB09E1F81059E&eid=C6EC7357BCACD3A4&journal_id=1001-7410&journal_name=第四纪研究&referenced_num=17&reference_num=0