主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2014, Vol. 30 ›› Issue (6): 125-133.doi:

• 论文 • 上一篇    下一篇

两种垂直分层方法对GPS水汽层析结果的影响

曹玉静1  刘晶淼2  廖荣伟3  梁宏4  楚艳丽5  李元寿1   

  1. 1. 中国气象局工程咨询中心，北京 100081；2. 中国气象局沈阳大气环境研究所，辽宁 沈阳 110166；3. 国家气象信息中心，北京 100081；4. 中国气象局气象探测中心，北京 100081；5. 北京城市气象研究所，北京 100089
  • 出版日期:2014-12-30 发布日期:2014-12-30

Effect of two vertical stratification methods of GPS tomography grid on GPS water vapor tomography result

CAO Yu-jing1  LIU Jing-miao2  LIAO Rong-wei3  LIANG Hong4  CHU Yan-li5  LI Yuan-shou1   

  1. 1. Engineering Consulting Center, China Meteorological Administration, Beijing 10081, China; 2. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China; 3. National Meteorological Information Center, Beijing 10081, China; 4. Meteorological Observation Center, China Meteorological Administration, Beijing 100081, China; 5.Institude of Urban Meteorology, China Meteorological Administration, Beijing 100089, China
  • Online:2014-12-30 Published:2014-12-30

PDF (PC)

293

被引次数

2

摘要：

利用北京房山地区9个全球定位系统测站组成的实验站网，研究GPS水汽层析网格的划分方法，采取垂直均匀和垂直非均匀两种分层方法，分析GPS层析网格垂直分层对水汽层析结果的影响。结果表明：均匀和非均匀垂直分层方法得到的GPS水汽层析结果是可靠的，均可以与探空水汽结果进行比较。但垂直非均匀分层更符合大气水汽的实际分布特征，层析解算精度更高，尤其对测站高度差较小的GPS站网，尽量选择垂直非均匀分层方法。垂直均匀和垂直非均匀分层方法均可以为北京地区GPS层析网格垂直划分提供参考。

关键词: GPS气象学, 层析, 大气水汽, 垂直分层

Abstract:

A Global Positioning System (GPS) experimental station network including nine GPS stations in Fangshan district of Beijing was used for a study on GPS tomography grid. Effects of vertical stratification on the water vapor tomography results were analyzed in terms of methods of a vertically uniform and a non-uniform stratification. The results show that GPS water vapor tomography results obtained by two vertical stratification methods are reliable, and they are consistent with observed water vapor from radiosonde stations. However, tomography grid of vertically non-uniform stratification is more accurate compared with the observed atmospheric water vapor distribution, and the results are more precise compared with that of vertically non-uniform stratification, especially for GPS stations with less altitude differences. Thus, the vertically non-uniform stratification method should be chosen for these stations, although two methods both can provide references for the GPS tomography grid in Beijing.

Key words:  GPS meteorology, Tomography, Atmospheric water vapor, Vertical stratification