首页|2011-2100年云南气温降水的多模式预估

2011-2100年云南气温降水的多模式预估

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利用25个云南气象站的气温、降水数据及CMIP5中21个全球模式的输出结果,评估了CMIP5模式集合对云南气候变化的模拟能力,并对未来的3种情景(RCP2。6、RCP4。5、RCP8。5)下云南2011-2100年的气温、降水变化趋势进行预估。结果表明:CMIP5全球气候模式能较好地模拟云南气温的演变趋势,但对降水的模拟能力相对较弱;3种RCP情景下,2011-2050年,云南多年年均气温都呈现出一致的上升趋势;相对于1986-2005年,云南多年(2011-2050年)年均降水量增幅为正的主要是海拔高度较高的区域,增幅为负的主要是东部海拔高度较低区域;2051-2100年,3种RCP情景下,多年年均气温都呈现出一致的上升,上升较显著的是海拔高度较高的北部区域;2051-2100年全区降水量都有一个正的增幅,同时随着RCP排放情景的上升,降水量空间上增幅变得更大,尤其是西部地势较高的区域。
Multimodal Estimation of Temperature and Precipitation in Yunnan From 2011 to 2100
Based on the temperature and precipitation data of Yunnan Province and CMIP5(Coupled Model Inter-Comparison Project Phase 5)models,the simulation ability of CMIP5 models in Yunnan is evaluated,and then the change trend of temperature and precipitation in the future is estimated,under the RCP 2.6,RCP 4.5 and RCP 8.5 scenario.The result shows that the CMIP5 multi-model ensemble can capture the temporal variation and the spa-tial distribution characteristics of temperature quite satisfactory,but its ability to simulate precipitation is relative-ly weak.The annual average temperature shows uptrend in this region in all the RCP scenario from 2011 to 2050.Relative to the 1980-2005,the locations of the increase area of the annual average precipitation(2011-2050)are in the higher elevation of the region,and the decrease areas are located in the lower elevation region,which is on the east part.The annual average temperature shows uptrend in this region in all the RCP scenario from 2051 to 2100,and the increase part are located in the north part of Yunnan province,where the elevation is high.There will be a positive increase of precipitation in the whole region from 2051 to 2100,and with the rise of RCP emission sce-nario,the spatial increase of precipitation will become larger,especially in the western region with higher terrain.

temperature changeprecipitation changeclimate modelRCP scenarios

陈恩波、广键梅、张开源

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云南玉溪农业职业技术学院,云南玉溪 653106

气温变化 降水变化 气候模式 RCP情景

2024

绿色科技
花木盆景杂志社

绿色科技

影响因子:0.365
ISSN:1674-9944
年,卷(期):2024.26(20)