Determination of total precipitable water from GNSS data in Thailand

Weeranat Phasamak; Seubson Soisuvarn; Yuttapong Rangsanseri

doi:10.1109/IGARSS.2019.8900233

Determination of total precipitable water from GNSS data in Thailand

Weeranat Phasamak
, Seubson Soisuvarn
, Yuttapong Rangsanseri

Cooperative Programs for the Advancement of Earth System Science

King Mongkut's Institute of Technology Ladkrabang

Research output: Abstract › Paper › peer-review

Abstract

The relationship between the total precipitable water (TPW) in the atmosphere and Global Navigation Satellite System (GNSS) Zenith Total Delay (ZTD) has been investigated. The study was performed for ZTD observations derived from GPS measurements at 5 sites across Thailand, over one-year period, July 2017 to August 2018. The ZTD was then collocated in space and time with the TPW data available from Global Data Assimilation System (GDAS) Numerical Weather Prediction (NWP) model. The result showed that the ZTD observations are highly correlated with the TPW but there are some biases between the ground base station locations largely due to the altitude differences. An empirical model was then developed to remove the altitude dependence and provide a unique relationship between the ZTD and the TPW. This model can be useful in the further TPW measurements from widely available GNSS receivers.

Original language	English
Pages	7683-7686
Number of pages	4
DOIs	https://doi.org/10.1109/IGARSS.2019.8900233
State	Published - 2019
Event	39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Yokohama, Japan Duration: Jul 28 2019 → Aug 2 2019

Conference

Conference	39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
Country/Territory	Japan
City	Yokohama
Period	07/28/19 → 08/2/19

Keywords

GNSS Remote Sensing
RTKLIB
Total Precipitable Water
Zenith Total Delay

Access to Document

10.1109/IGARSS.2019.8900233

Cite this

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title = "Determination of total precipitable water from GNSS data in Thailand",

abstract = "The relationship between the total precipitable water (TPW) in the atmosphere and Global Navigation Satellite System (GNSS) Zenith Total Delay (ZTD) has been investigated. The study was performed for ZTD observations derived from GPS measurements at 5 sites across Thailand, over one-year period, July 2017 to August 2018. The ZTD was then collocated in space and time with the TPW data available from Global Data Assimilation System (GDAS) Numerical Weather Prediction (NWP) model. The result showed that the ZTD observations are highly correlated with the TPW but there are some biases between the ground base station locations largely due to the altitude differences. An empirical model was then developed to remove the altitude dependence and provide a unique relationship between the ZTD and the TPW. This model can be useful in the further TPW measurements from widely available GNSS receivers.",

keywords = "GNSS Remote Sensing, RTKLIB, Total Precipitable Water, Zenith Total Delay",

author = "Weeranat Phasamak and Seubson Soisuvarn and Yuttapong Rangsanseri",

note = "Publisher Copyright: {\textcopyright}2019 IEEE; 39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 ; Conference date: 28-07-2019 Through 02-08-2019",

year = "2019",

doi = "10.1109/IGARSS.2019.8900233",

language = "English",

pages = "7683--7686",

}

TY - CONF

T1 - Determination of total precipitable water from GNSS data in Thailand

AU - Phasamak, Weeranat

AU - Soisuvarn, Seubson

AU - Rangsanseri, Yuttapong

PY - 2019

Y1 - 2019

N2 - The relationship between the total precipitable water (TPW) in the atmosphere and Global Navigation Satellite System (GNSS) Zenith Total Delay (ZTD) has been investigated. The study was performed for ZTD observations derived from GPS measurements at 5 sites across Thailand, over one-year period, July 2017 to August 2018. The ZTD was then collocated in space and time with the TPW data available from Global Data Assimilation System (GDAS) Numerical Weather Prediction (NWP) model. The result showed that the ZTD observations are highly correlated with the TPW but there are some biases between the ground base station locations largely due to the altitude differences. An empirical model was then developed to remove the altitude dependence and provide a unique relationship between the ZTD and the TPW. This model can be useful in the further TPW measurements from widely available GNSS receivers.

AB - The relationship between the total precipitable water (TPW) in the atmosphere and Global Navigation Satellite System (GNSS) Zenith Total Delay (ZTD) has been investigated. The study was performed for ZTD observations derived from GPS measurements at 5 sites across Thailand, over one-year period, July 2017 to August 2018. The ZTD was then collocated in space and time with the TPW data available from Global Data Assimilation System (GDAS) Numerical Weather Prediction (NWP) model. The result showed that the ZTD observations are highly correlated with the TPW but there are some biases between the ground base station locations largely due to the altitude differences. An empirical model was then developed to remove the altitude dependence and provide a unique relationship between the ZTD and the TPW. This model can be useful in the further TPW measurements from widely available GNSS receivers.

KW - GNSS Remote Sensing

KW - RTKLIB

KW - Total Precipitable Water

KW - Zenith Total Delay

UR - https://www.scopus.com/pages/publications/85114050501

U2 - 10.1109/IGARSS.2019.8900233

DO - 10.1109/IGARSS.2019.8900233

M3 - Paper

AN - SCOPUS:85114050501

SP - 7683

EP - 7686

T2 - 39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019

Y2 - 28 July 2019 through 2 August 2019

ER -

Determination of total precipitable water from GNSS data in Thailand

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Keywords

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