气候模式对东北三省降水模拟能力评估及预估

doi:10.3969/j.issn.1673-503X.2016.05.008

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (5): 52-60.doi: 10.3969/j.issn.1673-503X.2016.05.008

气候模式对东北三省降水模拟能力评估及预估

王涛¹, 王乙舒^1,2, 崔妍¹, 敖雪¹, 赵春雨¹, 王颖¹, 周晓宇¹, 侯依玲¹, 刘鸣彦¹, 顾正强¹

1. 沈阳区域气候中心, 辽宁沈阳 110166;
2. 沈阳农业大学辽宁沈阳 110866

收稿日期:2015-04-22 修回日期:2016-04-19 出版日期:2016-10-31 发布日期:2016-10-31
通讯作者: 赵春雨 E-mail:springrainscn@163.com
作者简介:王涛,男,1985年生,助理工程师,主要从事气候变化与气候动力学研究,E-mail:nick_bsb@126.com。
基金资助:
中国气象局气候变化专项（CCSF201321、CCSF201526）、辽宁省气象局科研课题（201405）和辽宁省科技厅农业攻关项目（2015103038）共同资助。

Evaluation of ability of climate model for simulating precipitation in Northeast China and precipitation prediction

WANG Tao¹, WANG Yi-shu^1,2, CUI Yan¹, AO Xue¹, ZHAO Chun-yu¹, WANG Ying¹, ZHOU Xiao-yu¹, HOU Yi-ling¹, LIU Ming-yan¹, GU Zheng-qiang¹

1. Shenyang Regional Climate Center, Shenyang 110166, China;
2. Shenyang Agricultural University, Shenyang 110866, China

Received:2015-04-22 Revised:2016-04-19 Online:2016-10-31 Published:2016-10-31

摘要/Abstract

摘要：

利用CMIP 5全球气候模式、RegCM 4区域气候模式数据集和中国东北三省162个气象站降水观测资料，评估了CMIP 5和RegCM 4模式对中国东北三省降水的模拟能力，并对RCP 4.5和RCP 8.5温室气体排放情景下东北三省未来降水的变化进行了预估。结果表明：CMIP 5和RegCM 4模式均能较好地模拟东北三省年及四季降水量的变化，可再现东北三省降水量由东南向西向北递减的空间分布形势，但模拟的降水中心偏北，模拟的降水强度偏强；两个模式对夏季降水的模拟优于冬季，对冬季降水的模拟存在较大偏差。总体而言，全球气候模式CMIP 5对东北三省降水的模拟结果较好。对东北三省降水量的预估表明，在RCP 4.5和RCP 8.5情景下，全球气候模式CMIP 5预估东北三省年和四季降水量均呈不同程度的增加，其中对冬季降水量预估的偏差百分率增幅最大。在RCP 8.5情景下，东北三省降水量增幅显著，预估未来东北三省降水增加量基本呈由南向北逐步递减的分布，降水偏差百分率基本呈由西南向东北递减的分布。在RCP 4.5情景下，东北三省降水量增幅较小，预估未来东北三省降水量总体呈由东南向西北递减的分布，降水偏差百分率基本呈由西向东递减的分布。

关键词: 全球气候模式, 区域气候模式, 降水, 模拟能力, 情景预估

Abstract:

Based on datasets from global climate model CMIP 5 (Coupled Model Intercomparison Project Phase 5) and regional climate model RegCM 4 (Regional Climate Model 4),as well as precipitation data from 162 meteorological stations in Northeast China (NEC),the capability to simulate precipitation by CMIP 5 and RegCM 4 was evaluated.Additionally,precipitation changes in NEC in the future were predicted and assessed using these two models under two greenhouse gas emission scenarios,i.e.RCP (Representative Concentration Pathways) 4.5 and RCP 8.5.The results show that these two models can well simulate annual and seasonal precipitation in NEC.The spatial distributions of precipitation,which gradually decreasing from southeast to northwest in NEC,are well reproduced by the two models.The simulated precipitation center lies in the north of observed position,and precipitation intensity is stronger than that of observations.The simulated precipitation in summer is more accurate than that in winter and precipitation deviation in winter is much larger.Overall,simulated results of precipitation in NEC by CMIP 5 are better.The prediction results of future precipitation show that annual and seasonal precipitation in NEC simulated by CMIP 5 increases under emission scenarios of RCP 4.5 and RCP 8.5.The precipitation deviation percentage in winter is larger than that in other seasons.Under emission scenario of RCP 8.5,precipitation's increments in NEC are significant.The spatial distribution of precipitation increments decreases from south to north,and precipitation deviation percentages decrease from southwest to northeast.Under emission scenario of RCP 4.5,precipitation increments are less.The spatial distribution of predicted precipitation decreases from southeast to northwest,and precipitation deviation percentages decrease from west to east.

Key words: Global climate model, Regional climate model, Precipitation, Simulation ability, Scenarios projections

中图分类号:

P467

王涛, 王乙舒, 崔妍, 敖雪, 赵春雨, 王颖, 周晓宇, 侯依玲, 刘鸣彦, 顾正强. 气候模式对东北三省降水模拟能力评估及预估[J]. 气象与环境学报, 2016, 32(5): 52-60.

WANG Tao, WANG Yi-shu, CUI Yan, AO Xue, ZHAO Chun-yu, WANG Ying, ZHOU Xiao-yu, HOU Yi-ling, LIU Ming-yan, GU Zheng-qiang. Evaluation of ability of climate model for simulating precipitation in Northeast China and precipitation prediction[J]. Journal of Meteorology and Environment, 2016, 32(5): 52-60.

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气候模式对东北三省降水模拟能力评估及预估

Evaluation of ability of climate model for simulating precipitation in Northeast China and precipitation prediction

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