The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions
Temporal mass variations within the Earth’s system can be detected on a regional/global scale using GRACE (Gravity Recovery and Climate Experiment) and GRACE Follow-On (GRACE-FO) satellite missions’ data, while GNSS (Global Navigation Satellite System) data can be used to detect those variations on...
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MDPI AG
2020-10-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/12/20/3359 |
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| author | Walyeldeen Godah Jagat Dwipendra Ray Malgorzata Szelachowska Jan Krynski |
| author_facet | Walyeldeen Godah Jagat Dwipendra Ray Malgorzata Szelachowska Jan Krynski |
| author_sort | Walyeldeen Godah |
| collection | DOAJ |
| description | Temporal mass variations within the Earth’s system can be detected on a regional/global scale using GRACE (Gravity Recovery and Climate Experiment) and GRACE Follow-On (GRACE-FO) satellite missions’ data, while GNSS (Global Navigation Satellite System) data can be used to detect those variations on a local scale. The aim of this study is to investigate the usefulness of national GNSS CORS (Continuously Operating Reference Stations) networks for the determination of those temporal mass variations and for improving GRACE/GRACE-FO solutions. The area of Poland was chosen as a study area. Temporal variations of equivalent water thickness Δ<i>EWT</i> and vertical deformations of the Earth’s surface Δ<i>h</i> were determined at the sites of the ASG-EUPOS (Active Geodetic Network of the European Position Determination System) CORS network using GRACE/GRACE-FO-based GGMs and GNSS data. Moreover, combined solutions of Δ<i>EWT</i> were developed by combining Δ<i>EWT</i> obtained from GNSS data with the corresponding ones determined from GRACE satellite mission data. Strong correlations (correlation coefficients ranging from 0.6 to 0.9) between detrended Δ<i>h</i> determined from GRACE/GRACE-FO satellite mission data and the corresponding ones from GNSS data were observed at 93% of the GNSS stations investigated. Furthermore, for the determination of temporal mass variations, GNSS data from CORS network stations provide valuable information complementary to GRACE satellite mission data. |
| first_indexed | 2024-03-10T15:35:27Z |
| format | Article |
| id | doaj.art-551a4208515143c1a0a5eb7ad4c35d9f |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T15:35:27Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-551a4208515143c1a0a5eb7ad4c35d9f2023-11-20T17:15:16ZengMDPI AGRemote Sensing2072-42922020-10-011220335910.3390/rs12203359The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO SolutionsWalyeldeen Godah0Jagat Dwipendra Ray1Malgorzata Szelachowska2Jan Krynski3Institute of Geodesy and Cartography, Centre of Geodesy and Geodynamics, 27 Modzelewskiego St., 02-679 Warsaw, PolandInstitute of Geodesy and Cartography, Centre of Geodesy and Geodynamics, 27 Modzelewskiego St., 02-679 Warsaw, PolandInstitute of Geodesy and Cartography, Centre of Geodesy and Geodynamics, 27 Modzelewskiego St., 02-679 Warsaw, PolandInstitute of Geodesy and Cartography, Centre of Geodesy and Geodynamics, 27 Modzelewskiego St., 02-679 Warsaw, PolandTemporal mass variations within the Earth’s system can be detected on a regional/global scale using GRACE (Gravity Recovery and Climate Experiment) and GRACE Follow-On (GRACE-FO) satellite missions’ data, while GNSS (Global Navigation Satellite System) data can be used to detect those variations on a local scale. The aim of this study is to investigate the usefulness of national GNSS CORS (Continuously Operating Reference Stations) networks for the determination of those temporal mass variations and for improving GRACE/GRACE-FO solutions. The area of Poland was chosen as a study area. Temporal variations of equivalent water thickness Δ<i>EWT</i> and vertical deformations of the Earth’s surface Δ<i>h</i> were determined at the sites of the ASG-EUPOS (Active Geodetic Network of the European Position Determination System) CORS network using GRACE/GRACE-FO-based GGMs and GNSS data. Moreover, combined solutions of Δ<i>EWT</i> were developed by combining Δ<i>EWT</i> obtained from GNSS data with the corresponding ones determined from GRACE satellite mission data. Strong correlations (correlation coefficients ranging from 0.6 to 0.9) between detrended Δ<i>h</i> determined from GRACE/GRACE-FO satellite mission data and the corresponding ones from GNSS data were observed at 93% of the GNSS stations investigated. Furthermore, for the determination of temporal mass variations, GNSS data from CORS network stations provide valuable information complementary to GRACE satellite mission data.https://www.mdpi.com/2072-4292/12/20/3359equivalent water thicknessGNSSGRACE/GRACE-FOtemporal mass variations within the Earth’s systemvertical surface deformation |
| spellingShingle | Walyeldeen Godah Jagat Dwipendra Ray Malgorzata Szelachowska Jan Krynski The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions Remote Sensing equivalent water thickness GNSS GRACE/GRACE-FO temporal mass variations within the Earth’s system vertical surface deformation |
| title | The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions |
| title_full | The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions |
| title_fullStr | The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions |
| title_full_unstemmed | The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions |
| title_short | The Use of National CORS Networks for Determining Temporal Mass Variations within the Earth’s System and for Improving GRACE/GRACE-FO Solutions |
| title_sort | use of national cors networks for determining temporal mass variations within the earth s system and for improving grace grace fo solutions |
| topic | equivalent water thickness GNSS GRACE/GRACE-FO temporal mass variations within the Earth’s system vertical surface deformation |
| url | https://www.mdpi.com/2072-4292/12/20/3359 |
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