Comparisons of the temperature and humidity profiles of reanalysis products with shipboard GPS sounding measurements obtained during the 2018 Eastern Indian Ocean Open Cruise

论文摘要

本研究利用2018年春季东印度洋科学考察航次采集的GPS探空数据集,分析了三套再分析资料（JRA-55、MERR2和FGOALS-f2）对赤道东印度洋对流层中低层大气温湿廓线的模拟能力。结果表明:JRA-55和MERRA2能合理地再现850-600hPa之间的温度廓线的特征,最大偏差小于0.5度,但在850h Pa以下的偏差增大,最底层的偏差分别达到了2和1.5度;两套再分析资料对850-600h Pa之间的湿度扩线也具备较好的再现能力,但在850hPa以下JRA55和MERRA2再分析资料高估了相对湿度,最大湿度偏差可达15%。相对而言,FGOALS-f2分析资料对温度廓线再现能力最好,边界层内的温度偏差明显小于其它两套再分析资料;但FGOALS-f2也存在整层偏湿的问题,最大偏差在600h Pa附近,误差接近20%。

论文目录

• 1. Introduction
• 2. Datasets and methods
•   2.1. GPS sounding observational datasets
•   2.2. Reanalysis datasets
•   2.3. Methods
• 3. Results
• 4. Discussion and conclusions
• Disclosure statement

文章来源

类型: 期刊论文

作者: WANG Lei,BAO Qing,LI Jinxiao,WANG Dongxiao,LIU Yimin,WU Guoxiong,WU Xiaofei

关键词: 探空观测,赤道东印度洋,温湿廓线,再分析资料,模拟性能

来源: Atmospheric and Oceanic Science Letters 2019年03期

年度: 2019

分类: 基础科学

专业: 自然地理学和测绘学,气象学,海洋学

单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics,Chinese Academy of Sciences,College of Earth and Planetary Sciences, University of Chinese Academy of Sciences,CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences(CAS),State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences,School of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology

基金: supported by funds from the National Key Research and Development Program Global Change and Mitigation Project [grant number 2017YFA0604004],the National Natural Science Foundation of China [grant numbers41675100,91737306 and U1811464],provided by the SCSIO under the project ‘Scientific investigation of the Eastern Indian Ocean in 2018’,funded by the NSFC(NORC2018-10)

分类号: P714.2;P228.4

页码: 177-183

总页数: 7

文件大小: 345K

下载量: 18