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| MIROC_Hires模式模拟我国极端降水非均匀性在CO2浓度增加下的响应 | |
| 引用本文： | 黄丹青,周鹏,朱坚,林惠娟.MIROC_Hires模式模拟我国极端降水非均匀性在CO2浓度增加下的响应[J].热带气象学报,2012,28(4):487-496. |
| 作者姓名： | 黄丹青 周鹏 朱坚 林惠娟 |
| 作者单位： | 1. 南京大学大气科学学院/南京大学灾害性天气气候研究所,江苏南京210093;南京信息工程大学气象灾害省部共建教育部重点实验室,江苏南京210044 2. 南京大学大气科学学院/南京大学灾害性天气气候研究所,江苏南京210093;江苏省气象台,江苏南京210008 3. 河海大学水文水资源学院,江苏南京,210098 4. 苏州市气象局,江苏苏州,215021 |
| 基金项目： | 国家自然科学基金(41105044、41130963);气象灾害省部共建教育部重点实验室(南京信息工程大学)开放课题(KLME1105);中央高校基本科研业务费苗圃项目(1107020730)共同资助 |
| 摘 要： | 利用日本东京大学气候系统研究中心、日本环境研究所和日本地球环境研究中心联合研制的全球海气耦合气候系统模式(MIROC_Hires)输出的逐日降水资料,探讨CO2浓度增加下我国极端降水非均匀性的响应及其可能机制。结果表明:(1)就气候平均而言,CO2浓度增加后,我国南部地区极端降水事件的发生更为集中,而北方地区的极端降水事件分布较平均。(2)从年际变率来看,我国南部地区极端降水事件集中度在"A1B试验"中偏小,年际之间的差异不大,而北方地区的极端降水集中度增加,年际之间变化剧烈。(3)CO2浓度增加后,南方和北方地区在水平和垂直上的增温幅度不一致,且整层大气平均的稳定度呈现出南北反相差异。这种不均匀增暖的分布很可能是导致我国极端降水非均匀性在CO2浓度增加后变化的原因。 |
| 关 键 词： | 气候学 极端降水特征 集中度和集中期 CO2浓度增加 非均匀性 |
SIMULATING THE RESPONSE OF NON-UNIFORMITY OF PRECIPITATION EXTREMES OVER CHINA TO RISING CO2 USING MIROCHIRES |
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| HUANG Dan-qing , ZHOU Peng , ZHU Jian , LIN Hui-juan.SIMULATING THE RESPONSE OF NON-UNIFORMITY OF PRECIPITATION EXTREMES OVER CHINA TO RISING CO2 USING MIROCHIRES[J].Journal of Tropical Meteorology,2012,28(4):487-496. | |
| Authors: | HUANG Dan-qing ZHOU Peng ZHU Jian LIN Hui-juan |
| Institution: | 1.School of Atmospheric Sciences,Nanjing University,Nanjing 210093,China;2.Key Laboratory of Meteorological Disaster of Ministry of Education,NUIST,Nanjing 210044,China;3.Jiangsu Meteorological Observatory,Nanjing 210008,China;4.College of Hydrology and Water Resources,Hehai University,Nanjing 210098,China;5.Suzhou Meteorological Bureau,Suzhou 215021,China) |
| Abstract: | Based on the daily precipitation from an air-sea coupled climate model,MIROC_Hires,the response of non-uniformity of precipitation extremes over China to doubling CO2 has been analyzed.Under the CO2 increasing scenario(SRES A1B),the main conclusions are as follows:(1) For climatology,the precipitation extremes are concentrated over the southern part of China,while they are uniformly distributed over the northern China.(2) For interannual variance,the concentration of precipitation extremes is small over the southern part of China,while it is opposite over the northern China.(3) The warming effects on horizontal and vertical scales are different over the northern and southern part of China.Furthermore,the stability of the atmosphere over the northern and southern part of China is also different.The heterogeneous warming is one of possible reasons leading to the change of non-uniformity of precipitation extremes over China. |
| Keywords: | climatology precipitation extremes concentration density and concentration period CO2increased uneven pattern |
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