中国农业气象 ›› 2013, Vol. 34 ›› Issue (02): 123-129.doi: 10.3969/j.issn.1000-6362.2013.02.001

• 论文 • 上一篇    下一篇

高分辨率区域气候模式CCLM对鄱阳湖流域气温的模拟评估

孟玉婧1,2,姜彤2,苏布达2,张杰1,2   

  1. 1南京信息工程大学,南京210044;2中国气象局国家气候中心,北京100081
  • 收稿日期:2012-06-30 出版日期:2013-04-20 发布日期:2013-04-16
  • 作者简介:孟玉婧(1987-),女,内蒙古呼伦贝尔人,硕士生,主要从事气候变化综合影响评估研究。Email:mengnan198704@163.com
  • 基金资助:
    国家重点基础研究发展计划项目(973)(2010CB428401);全球变化研究国家重大科学计划项目(973)(2012CB955903);海河和鄱阳湖流域气候极端值变化趋势评价和比较(40910177);国家自然科学基金(41001021)

Temperature Simulation Assessment by High resolution Regional Climate Model (CCLM)in Poyang Lake Basin

MENG Yu jing1,2,JIANG Tong2,SU Bu da2,ZHANG Jie1,2   

  1. 1Nanjing University of Information Science & Technology,Nanjing210044,China;2National Climate Center,China Meteorological Administration,Beijing100081
  • Received:2012-06-30 Online:2013-04-20 Published:2013-04-16

摘要: 利用高分辨率区域气候模式CCLM(COSMO model in Climate Mode)模拟鄱阳湖流域逐日气温资料,将基准期(1961-2000年)的模拟结果与实际观测值进行对比,并对2011-2050年SRES A1B情景下的气温变化进行预估分析。结果表明,(1)CCLM能够较好地模拟出鄱阳湖流域基准期平均气温(T Mean)、最高气温(T Max)和最低气温(T Min)分别在年、月、日尺度上的时空分布特征。与观测值相比,模拟值普遍偏大,其中,流域东北部和南部的偏差较小,流域北部和中部的偏差相对较大,但CCLM模式能反映出鄱阳湖流域东北部和西北部的气温低值区。(2)A1B情景下,未来40a鄱阳湖流域T Mean、T Max和T Min在年、月、日尺度上均呈增加趋势。年气温增幅在2040s达到最大。月尺度上,1月的T Mean和T Max以及8月的T Min增幅最大;日尺度上,年最大T Max在流域东部增幅最大,而年最小T Min在流域西北部增幅最大。研究结果可为鄱阳湖流域提供精细化的气候变化预估资料,同时对流域气候变化定量影响评估和适应性措施的提出具有重要的参考价值。

关键词: 区域气候模式, CCLM, 鄱阳湖流域, 气温

Abstract: Daily temperature in Poyang Lake basin was simulated by using high-resolution regional climate model(CCLM),observed daily temperature of the baseline period(1961-2000)was compared with simulated data during same period,and the projection data from 2011 to 2050 was analyzed.The results showed that CCLM simulated the temporal-spatial distribution of T Mean,T Max and T Min at the levels of annual,monthly and daily.In general,simulation data was larger than the observation data,and deviation was relative low in the northeastern and southern of the basin and high in north and central region.But CCLM model simulated the low temperature region in northeast and northwest of Poyang Lake basin T Mean,T Max and T Min will be showed rising tendency in coming 40 years in Poyang Lake basin under A1B scenario Max increasing annual temperature will be found in 2040s.The max increasing T Mean and T Max found in January and T Min in August with monthly level,and max increasing annual T Max found in the east region and annual T Min in the northwest region with daily scale respectively.The results could provide a reference to climate change impact assessment and quantitative adaptation measures in Poyang Lake basin.

Key words: Regional climate model, CCLM, Poyang Lake basin, Temperature