刘健1,2,3,,,
孙炜毅1,
易慧郁1
1. 南京师范大学虚拟地理环境教育部重点实验室/江苏省地理环境演化国家重点实验室培育建设点/江苏省地理信息资源开发与利用协同创新中心, 南京师范大学地理科学学院, 江苏 南京 210023
2. 江苏省大规模复杂系统数值模拟重点实验室, 南京师范大学数学科学学院, 江苏 南京 210023
3. 青岛海洋科学与技术试点国家实验室海洋-气候-同位素模拟开放工作室, 山东 青岛 266237
基金项目: 国家重点基础研究发展计划项目（批准号：2016YFA0600401）、国家自然科学基金项目（批准号：41971108、41420104002、41671197和41971021）和江苏省高校优势学科建设项目（批准号：164320H116）共同资助
详细信息
作者简介: 戴张奇, 男, 24岁, 硕士研究生, 古气候模拟研究, E-mail: daizhangqi@126.com
通讯作者: 刘健, E-mail: jliu@njnu.edu.cn
中图分类号: P467;P426.6收稿日期:2020-09-29
修回日期:2021-12-24
刊出日期:2021-03-30
A climate simulation study on the monsoon precipitation over Northern Hemisphere in three typical warm periods during the past 2000 years
DAI Zhangqi1,,LIU Jian1,2,3,,,
SUN Weiyi1,
YI Huiyu1
1. Key Laboratory for Virtual Geographic Environment of Ministry of Education, State Key Laboratory Cultivation Base of Geographical Environment Evolution of Jiangsu Province, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Geography Science, Nanjing Normal University, Nanjing 210023, Jiangsu
2. Jiangsu Provincial Key Laboratory for Numerical Simulation of Large Scale Complex Systems, School of Mathematical Science, Nanjing Normal University, Nanjing 210023, Jiangsu
3. Open Studio for the Simulation of Ocean-Climate-Isotope, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, Shandong
More Information
Corresponding author: LIU Jian,E-mail:jliu@njnu.edu.cn
MSC: P467;P426.6--> Received Date: 29 September 2020
Revised Date: 24 December 2021
Publish Date: 30 March 2021
摘要
摘要:理解北半球季风降水在暖期的变化特点及其对外强迫的响应对现代社会经济发展至关重要。文章基于通用地球系统模式（CESM）过去2000年气候模拟试验结果和气候同化资料（LMR），探究罗马暖期、中世纪气候异常期和现代暖期北半球季风降水的特征及其成因机制。结果表明：在这3个典型暖期中，北半球季风降水都呈现增加的趋势，其降水异常场的空间分布是相似的，但是3个暖期的季风降水强度截然不同，罗马暖期和中世纪气候异常期降水强度相似，而现代暖期季风降水强度明显强于前两个暖期，其降水异常值约为前两个暖期的1.2倍。3个暖期的降水增多均由热力作用主导，其中罗马暖期和中世纪气候异常期主要受到太阳辐射增强而引起的热力作用增强的影响，火山活动微弱导致的动力作用增强也有一定的贡献；而在现代暖期，太阳辐射和火山活动对于热力、动力的贡献与前两个暖期相似，但是温室气体增多引起热力、动力作用显著增强，从而导致现代暖期总的热力、动力作用都明显高于前两个暖期。
关键词: 北半球季风降水/
罗马暖期/
中世纪气候异常期/
现代暖期/
热力动力过程
Abstract:Understanding the changing characteristics of monsoon precipitation in the Northern Hemisphere during the warm period and its response to external forcing is crucial for modern socio-economic development. Using the Last Millennium Reanalysis(LMR) and climate simulation experiment based on the Community Earth System Model(CESM) during the past 2000 years, this study discusses the characteristics and mechanism of Northern Hemisphere monsoon precipitation in the Roman Warm Period, the Medieval Climate Anomaly and the Present Warm Period. The results show that during the three typical warm periods, the Northern Hemisphere monsoon precipitation presents an increasing trend, and the spatial distribution of the precipitation anomalies is similar. However, the monsoon precipitation intensity of the three warm periods is completely different. The Roman Warm Period and the Medieval Climate Anomaly have similar precipitation intensity, while the Present Warm Period is significantly stronger than the first two warm periods, which is about 1.2 times. The precipitation increase in the three warm periods is dominated by the thermal process, among which the Roman Warm Period and the Medieval Climate Anomaly are mainly influenced by the thermal process caused by the enhancement of solar radiation, and the dynamic process caused by the weak volcanic activity also contributed to some extent. In the Present Warm Period, the contribution of solar radiation and volcanic activity to the thermodynamic process is similar to that of the first two warm periods, but the increase of greenhouse gases causes the thermodynamic process to increase significantly, so that the total thermodynamic process of the Present Warm Period is significantly higher than that of the first two warm periods.
Key words:Northern Hemisphere monsoon precipitation/
Roman Warm Period/
Medieval Climate Anomaly/
Present Warm Period/
thermodynamic and dynamical processes
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