贝尔斯克CGO的GPS观测和CIMEL太阳光度计测量的综合可降水量

IF 0.3 Q4 REMOTE SENSING
M. Kruczyk, T. Liwosz, A. Pietruczuk
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引用次数: 1

摘要

摘要本文介绍了GPS和CIMEL-318太阳光度计两种技术在同一位置的综合可降水量测量结果。综合可降水量(IPW)是一个重要的气象参数,它是由波兰科学院(PAS) Belsk的中央地球物理观测站(CGO) GPS站的对流层GPS解决方案得出的,并与气溶胶机器人网络(AERONET)提供的太阳光度计(Cimel Electronique的Cimel -318设备)数据进行了比较。为获得对流层时延,提出了两种专用的独立GPS解决方案:欧洲永久网(EPN)子网络中的网络解决方案和精确点定位解决方案。通过与EPN对流层组合产品的对比,验证了对流层专用解决方案的质量。几个IPW比较和分析揭示了技术之间的系统差异(差异均方根值超过1毫米)。IPW偏差随季节变化:每年接近1毫米IPW(半年也存在)。IPW偏差是大气温度的函数。太阳光度法作为IPW检索技术存在系统性缺陷的原因可能是CIMEL中滤光片特性的改变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrated Precipitable Water from GPS Observations and CIMEL Sunphotometer Measurements at CGO Belsk
Abstract This paper describes results of integrated precipitable water co-located measurements from two techniques: GPS solution and CIMEL-318 sunphotometer. Integrated Precipitable Water (IPW) is an important meteorological parameter and is derived from GPS tropospheric solutions for GPS station at Central Geophysical Observatory (CGO), Polish Academy of Sciences (PAS), Belsk and compared with sunphotometer (CIMEL-318 device by Cimel Electronique) data provided by Aerosol Robotic Network (AERONET). Two dedicated and independent GPS solutions: network solution in the sub-network of European Permanent Network (EPN) and precise point positioning solution have been made to obtain tropospheric delays. The quality of dedicated tropospheric solutions has been verified by comparison with EPN tropospheric combined product. Several IPW comparisons and analyses revealed systematic difference between techniques (difference RMS is over 1 mm). IPW bias changes with season: annual close to 1 mm IPW (and semi-annual term also present). IPW bias is a function of atmospheric temperature. Probable cause of this systematic deficiency in solar photometry as IPW retrieval technique is a change of optical filter characteristics in CIMEL.
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来源期刊
自引率
28.60%
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审稿时长
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