学术论文

      WACCM3对夏季青藏高原臭氧谷双心结构的模拟性能评估

      Evaluation of WACCM3 Performance on Simulation of the Double Core of Ozone Valley over the Qinghai-Xizang in Summer

      摘要:
      利用全大气气候通用模式WACCM3对青藏高原夏季臭氧谷(OV)的双心结构进行了模拟.通过模式输出资料和ERA-interim再分析资料、MLS卫星资料的对比分析,对模式模拟性能进行了评估.结果表明:WACCM3能模拟出青藏高原夏季OV的双心结构,尤其对上对流层下平流层区(UTLS)的OV中心位置模拟较好,强度偏强.平流层上部的OV模拟较差,中心偏东,强度偏强.因为WACCM3对夏季高原邻近地区上空UTLS区的环流尤其是南亚高压模拟较好,而UTLS区的臭氧损耗的主要原因是动力输送作用,所以模拟效果好.上部OV模拟较差的原因主要是环流场模拟不佳导致了氯化物和氮氧化物的分布模拟较差.
      Abstract:
      The double core of Ozone Valley (OV) over the Qinghai-Xizang Plateau in summer was simulated by use of the WACCM3 (Whole Atmosphere Community Climate Model 3).The model performance was evaluated by inter-comparison of the model output data,ERA-Interim (European center for medium-range weather forecasts Re-Analysis Interim) data and MLS (Microwave Limb Sounder) satellite data.The results are as follows:The double core of OV over the Qinghai-Xizang Plateau in summer is detected in the WACCM3 output.The OV core near the Upper Troposphere-Lower Stratosphere (UTLS) is well performed in location.Intensity of the OV core is a little bit stronger than the observation.However,simulation is not good enough in the upper stratosphere.The upper stratospheric OV core from model output is stronger and biased to the east side.Successful simulation of atmospheric circulation is the reason for the well performance of the UTLS OV core which is mainly controlled by dynamic transport.The poor simulation of the upper OV is caused by the bad copy the chlorine and nitrogen compounds which may be resulted from the circulation differences between model output and observation.
      作者: 万凌峰 [1] 郭栋 [1] 刘仁强 [1] 施春华 [1] 苏昱丞 [2]
      作者单位: 南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心,南京,210044 南京信息工程大学空间天气研究所/南京信息工程大学数学与统计学院,南京,210044
      刊 名: 高原气象 ISTICPKU
      Journal: Plateau Meteorology
      年,卷(期): 2017, 36(1)
      分类号: P421.33
      在线出版日期: 2017年4月19日
      基金项目: 国家自然科学基金项目,国家留学基金,江苏高校优势学科建设工程资助项目