查詢結果分析
相關文獻
- The NTUGCM's AMIP Simulation on the East Asian Summer Monsoon
- 東亞夏季季風的成因與影響
- 亞洲大陸下墊面特性變化對東亞夏季季風影響之探討
- 東亞夏季季風期間季內振盪的年際變化
- 中央氣象局全球模式之氣候特徵:東亞夏季季風
- Cloud Parameterizations in SUNYA Regional Climate Model for the East Asia Summer Monsoon Simulations
- A Sensitivity Study of Regional Climate Simulation to Convective Parameterization Schemes for 1998 East Asian Summer Monsoon
- 東亞夏季季風期間雲輻射效應影響低頻振盪的模擬研究
- 1998年5-6月東亞季風環流之模擬及海溫之敏感度測試
- 東亞夏季降水量之年際變化
頁籤選單縮合
題名 | The NTUGCM's AMIP Simulation on the East Asian Summer Monsoon=臺大全球環流模式於AMIP模擬中對東亞夏季季風的研究 |
---|---|
作者 | 柯文雄; Kau, Wen-shung; |
期刊 | Terrestrial, Atmospheric and Oceanic Sciences |
出版日期 | 19980600 |
卷期 | 9:2 1998.06[民87.06] |
頁次 | 頁197-238 |
分類號 | 328.5 |
語文 | eng |
關鍵詞 | 臺大全球環流模式; 東亞; 夏季季風; AMIP; NTUGCM; East asian summer monsoon; Indian monsoon; Subtropical high; Surface boundary forcing; |
英文摘要 | The Asian summer monsoon accompanies two systems, the Indian monsoon and the East Asian monsoon. A major difference between the Asian and the Indian monsoon is that beginning in early May, the Asian monsoon takes about two months, to migrate over an extensive area from southern to northern China. At the same time, the associated heavy rainfall also moves from south to north. The monsoon rain-band associated with the Indian monsoon takes only one to two weeks to migrate from Southern to Northern India. The onset of the Southeast Asian southwest monsoon initiates the East Asian monsoon (EASM). Based on the NMC global spectral model, with significant modifications to virtually all of the physical parameter, we have developed a general circulation atmospheric model i.e. NTUGCM. The NTUGCM was used to perform an AMIP integration from 1 January 1979 to 31 December 1988. For the JJA (June, July, August) climatology, the simulated stream function at 850 hPa captures most of the major features in the observed climatological-mean fields. e.g., the subtropical high over the ocean, the cyclonic circulation over South Asia and the eddy straddling the equator in the Indian Ocean, as well as the Tibetan high, simulated in the 200 hPa stream function. In general, the NTUGCM gives a better simulation at 850 hPa than at 200 hPa and a better simulation around a large forcing region, e.g. South Asia, than around a weak forcing region, e.g. the Eastern Pacific and South American coast. The best simulation for precipitation is found in the Asian monsoon region where maximum precipitation occurs. The EASM rainfall distribution is the result of complex interactions between the atmosphere, the earth's surface and the tropical and extra tropical systems. The EASM rainfall distribution involves a wide range of spatial and temporal scales from the mesoscale to the planetary scale. The NTUGCM is able to simulate the large scale features of the EASM and the sudden change of the monsoon rainfall which is associated with abrupt changes in large scale atmospheric circulation. This study also analyzes the onset characteristics of the EASM simulated by the model. The AMIP simulation of the NTUGCM gives the onset date of the EASM as 13 May. The present results are encouraging, however, there are still many obvious issues that remain to be studies, such as the linkage between the monsoon's variation and surface boundaries forcing, the cause of the seasonal northward jump of the subtropical high, the dynamic and thermodynamic effects of the Tibetan Plateau and an improved model representing the physical parameters. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。