Atmospheric total water vapour and mass accumulation in Antarctica: Regional climate model simulations versus satellite obser vations

南极洲大气总水汽和质量积累：区域气候模型模拟与卫星观测

• 批准号: 75302604
• 负责人: Professor Dr. Klaus Dethloff
• 金额: --
• 依托单位: Forschungsstelle Potsdam
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/75302604?language=en
• 关键词: Atmospheric; total; water; vapour; mass

The aim of this project is an improved information on the mean surface accumulation respectively net mass balance, its variability and its importance for the main drainage basins in Antarctica. For this aim, simulations of the water vapour distribution with a reliable simulation of synoptic-scale cyclones will be done by applying the regional climate model HIRHAM with 50 km horizontal resolution and 25 vertical levels. It was shown recently that the HIRHAM model represents the atmospheric circulation and surface processes of Antarctica with sufficient accuracy if driven by the European Reanalyses data. Since the quality of the ECMWF operational data, driving HIRHAM has been improved from 1996 by assimilation of High-resolution Infrared Radiation Sounder (HIRS) data the project focuses on developing data sets for the period from 1996 until 2008. The simulation results will be compared to satellite geodetic observations: namely water vapour time series from GPS and mass variations observed by the GRACE gravity field satellite mission. This comparison of independent estimates on accumulation and mass changes will significantly improve our knowledge on climatology and present-day changes in Antarctica. Both the simulations based on the regional climate model HIRHAM and satellite geodetic observations based on GPS and the GRACE mission will be extended until 2008 covering the time of the International Polar Year.

该项目的目的是改进关于平均地表积累和净质量平衡、其变异性及其对南极洲主要流域的重要性的信息。为此，将通过应用水平分辨率为 50 公里、垂直高度为 25 的区域气候模型 HIRHAM 来模拟水汽分布，并可靠地模拟天气尺度的气旋。最近的研究表明，如果由欧洲再分析数据驱动，HIRHAM 模型可以足够准确地代表南极洲的大气环流和地表过程。自 1996 年起，通过同化高分辨率红外辐射探测器 (HIRS) 数据，ECMWF 运行数据的质量得到了提高，该项目的重点是开发 1996 年至 2008 年期间的数据集。模拟结果将与卫星大地测量观测结果进行比较：即来自 GPS 的水蒸气时间序列和 GRACE 重力场卫星任务观测到的质量变化。这种对积累和质量变化的独立估计的比较将显着提高我们对气候学和南极洲当今变化的了解。基于区域气候模型HIRHAM的模拟以及基于GPS和GRACE任务的卫星大地测量观测都将延长至2008年国际极地年期间。

项目成果

Evaluation of atmospheric boundary layer–surface process relationships in a regional climate model along an East Antarctic traverse

• DOI: 10.1029/2011jd016441
• 发表时间: 2012-05
• 期刊: Journal of Geophysical Research
• 作者: A. Rinke;Yongfeng Ma;L. Bian;Yufei Xin;K. Dethloff;P. Persson;C. Lüpkes;C. Xiao

Antarctic 20th Century Accumulation Changes Based on Regional Climate Model Simulations

基于区域气候模型模拟的南极20世纪累积变化

• DOI: 10.1155/2010/327172
• 发表时间: 2010
• 期刊: Advances in Meteorology
• 影响因子: 2.9
• 作者: Dethloff;K. Glushak;A. Rinke;D. Handorf
• 通讯作者: D. Handorf

Climate and forecast mode simulations for antarctica: Implications for temperature and wind

南极洲的气候和预报模式模拟：对温度和风的影响

• DOI: 10.1007/s00376-010-9178-0
• 发表时间: 2010
• 期刊: Advances in Atmospheric Sciences
• 影响因子: 5.8
• 作者: A. Rinke;L. Bian;K. Dethloff;C. Xiao;M. Mielke
• 通讯作者: M. Mielke