Analysis on Characteristics of Radiosonde Bias Using GPS Precipitable Water Vapor

Analysis on Characteristics of Radiosonde Bias Using GPS Precipitable Water Vapor

As an observation instrument of the longest record of tropospheric water vapor, radiosonde data provide upper-air pressure (geopotential height), temperature, humidity and wind. However, the data have some well-known elements related to inaccuracy. In this article, radiosonde precipitable water va...

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Bibliographic Details
Main Authors:	Chang-Geun Park, Jeongho Baek, Jungho Cho
Format:	Article
Language:	English
Published:	The Korean Space Science Society 2010-09-01
Series:	Journal of Astronomy and Space Sciences
Subjects:	radiosonde data provide upper-air pressure (geopotential height) temperature humidity and wind. However the data have some well-known elements related to inaccuracy. In this article radiosonde precipitable water vapor (PWV) at Sokcho observatory was compared with global positioning system (GPS) PWV during each summertime of year 2007 and 2008 and the biases were calculated. As a result the mean bias showed negative values regardless of the rainfall occurrence. In addition on the basis of GPS PWV the maximum root mean square error (RMSE) was 5.67 mm over the radiosonde PWV. GPS precipitable water vapor radiosonde bias
Online Access:	http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2010/v27n3/OJOOBS_2010_v27n3_213.pdf

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