2012 ©
             Publication
Journal Publication
Title of Article Determination of the dates of the southwest monsoon in northeastern Thailand from the data on precipitable water vapor obtained by GPS 
Date of Acceptance 14 November 2015 
Journal
     Title of Journal Russian Meteorology and Hydrology 
     Standard ISI 
     Institute of Journal Russian Federal Service for Hydrometeorology and Environmental Monitoring 
     ISBN/ISSN 1934-8096 
     Volume  
     Issue 40 
     Month 10
     Year of Publication 2015 
     Page 647-657 
     Abstract This paper outlines a new method for determining the onset and withdrawal of the southwest monsoon using Precipitable Water Vapor (PWV) estimated from GPS data: GPS-PWV. In this study, PWV is computed from GPS data collected from four ground-based GPS receivers in northeastern Thailand. Initially, we study the temporal and geographical distributions of the GPS-PWV data. Their statistical characteristics show that GPS-PWV can be used as a tool for determining the onset and withdrawal of the southwest monsoon in northeastern Thailand. The GPS-PWV data were processed using a decision tree analysis to obtain a new set of criteria for determining the onset and withdrawal of the monsoon. The new criterion specifies the onset as a period when the daily averaged GPS-PWV exceeds 52.1 mm for eight consecutive days. The withdrawal is a period when the daily averaged GPS-PWV is 52.1 mm or less for six consecutive days. The dates of onset and withdrawal of monsoons calculated from this method was compared with those obtained with other methods. The difference equaled 1–2 day except years 2010 and 2012 when the errors were more than two days. 
     Keyword GPS systems, precipitable water vapor, PWV, southwest monsoon, the dates of monsoon onset and withdrawal, northeastern Thailand 
Author
557040031-4 Mr. PRAWIT UANG-AREE [Main Author]
Engineering Doctoral Degree

Reviewing Status มีผู้ประเมินอิสระ 
Status ตีพิมพ์แล้ว 
Level of Publication นานาชาติ 
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Part of thesis true 
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