東亞高空西風(fēng)急流（簡(jiǎn)稱急流）對(duì)東亞夏季降水有著重要影響,因此,評(píng)估氣候系統(tǒng)模式對(duì)急流的模擬能力對(duì)理解東亞氣候變化至關(guān)重要。本文利用21個(gè)CMIP6氣候系統(tǒng)模式歷史氣候模擬試驗(yàn)數(shù)據(jù),結(jié)合NCEP和GPCP再分析資料,評(píng)估了CMIP6模式對(duì)現(xiàn)代（1986-2005年）急流氣候態(tài)和年際變率的模擬能力,并與CMIP5模式模擬結(jié)果進(jìn)行了對(duì)比。結(jié)果表明,CMIP6模式模擬的200 hPa緯向風(fēng)的空間分布特征更加真實(shí),沿急流方向的偏差更小。在CMIP6模式中,急流中心位置幾乎與觀測(cè)一致,但只有約三分之二的CMIP5模式能模擬出急流中心位置。CMIP6模式模擬的急流強(qiáng)度也更接近于觀測(cè)值,并且模式間不確定性減小。另外,CMIP6模式也改進(jìn)了對(duì)急流經(jīng)向位移年際變率的模擬能力,因而模擬的急流與東亞夏季降水的相關(guān)關(guān)系更強(qiáng)�？傮w而言,相對(duì)于CMIP5模式,CMIP6模式明顯改進(jìn)了對(duì)急流的模擬效果。 

【文章頁(yè)數(shù)】：9 頁(yè)

【文章目錄】：
1. Introduction
2. Data and methods
3. Results
    3.1 Simulation of the zonal wind at 200 h Pa over East Asia
    3.2 Simulation of the location and intensity of the EAJ
    3.3 Simulation of the interannual variability in the EAJ and relation to the EASR
4. Conclusions
Disclosure Statement


【參考文獻(xiàn)】：
期刊論文
[1]Projection of the East Asian westerly jet under six global warming targets[J]. FU Yuanhai,GUO Dong.  Atmospheric and Oceanic Science Letters. 2020(02)
[2]Intermodel Diversity in the Zonal Location of the Climatological East Asian Westerly Jet Core in Summer and Association with Rainfall over East Asia in CMIP5 Models[J]. Zhongda LIN,Yuanhai FU,Riyu LU.  Advances in Atmospheric Sciences. 2019(06)
[3]FGOALS模式對(duì)梅雨期東亞副熱帶西風(fēng)急流變化特征的模擬[J]. 杜銀,包慶,謝志清.  大氣科學(xué). 2017(03)
[4]Anomalous Midsummer Rainfall in Yangtze River-Huaihe River Valleys and Its Association with the East Asia Westerly Jet[J]. 宣守麗,張慶云,孫淑清.  Advances in Atmospheric Sciences. 2011(02)



本文編號(hào)：3673820