Determination of Precipitable Water Vapor from Combined GPS/GLONASS Measurements and its Accuracy Validation

손동효,; 박관동,; 김연희,

doi:10.7319/kogsis.2013.21.4.095

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…According to the result of previous studies (Ha et al 2007, Kim et al 2010, Sohn et al 2013, the PWV obtained from GPS was precise at a 1~3 mm level compared to the values obtained from a radiosonde or MWR. Therefore, if PWV is calculated using all the GPS permanent stations distributed over the Korean peninsula, continuous observation can be obtained at a high spatial resolution; and based on this, the temporal/spatial variation of PWV can be examined.…”

Section: Analysis Of Temporal and Spatial Variation Of Precipitable Wmentioning

confidence: 75%

Analysis of Temporal and Spatial Variation of Precipitable Water Vapor According to Path of Typhoon EWINIAR using GPS Permanent Stations

Won¹,

Kim²

2015

Journal of Positioning, Navigation, and Timing

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In this study, the temporal and spatial variation in precipitable water vapor (PWV) was analyzed for typhoon Ewiniar which had made landfall in the Korean peninsula in 2006. To make a contour map of PWV, zenith total delay (ZTD) was calculated using about 60 GPS permanent stations in Korea, and the pressure and temperature data of nearby AWS stations were interpolated and applied to the equation for calculating the PWV. While Typhoon Ewiniar was migrating north from the southern coast to the eastern coast of Korea, the PWV migrated showing a spatial distribution similar to that of rainfall. Also, the fluctuating pattern of the normalized PWV was analyzed, and the moving speed of the PWV was estimated using the delay time of the increase/decrease pattern in the eight-test stations. The result indicated that the moving speed of the PWV was about 35 km/h, which was similar to the average moving speed of the typhoon (38.9 km/h).

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Section: Analysis Of Temporal and Spatial Variation Of Precipitable Wmentioning

confidence: 75%

Analysis of Temporal and Spatial Variation of Precipitable Water Vapor According to Path of Typhoon EWINIAR using GPS Permanent Stations

Won¹,

Kim²

2015

Journal of Positioning, Navigation, and Timing

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Quality Assessment of Tropospheric Delay Estimated by Precise Point Positioning in the Korean Peninsula

Park¹,

Roh²,

Yoo³

et al. 2014

Journal of Positioning, Navigation, and Timing

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Water vapor in the atmosphere is one of the primary greenhouse gases, and has a significant impact on climate change (Kiehl & Trenberth 1997). For research on climate change and numerical weather forecasting, it is important to have accurate estimates of the amount and the distribution of water vapor. However, this is difficult due to the high spatial and temporal variability of water vapor (Bevis et al. 1992). Zenith total delay (ZTD) estimates based on the Global Navigation Satellite System (GNSS) can be transformed into atmospheric water vapor content (Bevis et

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Determination of Precipitable Water Vapor from Combined GPS/GLONASS Measurements and its Accuracy Validation

Cited by 2 publications

References 6 publications

Analysis of Temporal and Spatial Variation of Precipitable Water Vapor According to Path of Typhoon EWINIAR using GPS Permanent Stations

Analysis of Temporal and Spatial Variation of Precipitable Water Vapor According to Path of Typhoon EWINIAR using GPS Permanent Stations

Quality Assessment of Tropospheric Delay Estimated by Precise Point Positioning in the Korean Peninsula

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