Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research)
In the absence of in-situ data, satellite radar altimetry, critical for studies requiring water elevation data, faces challenges in outlier removal over reservoirs, influenced by surrounding land. We present JASTER (Jason Altimetry Stand-Alone Tool for Enhanced Research), an open-source, fully autom...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-12-01
|
| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17538947.2024.2406387 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850264991371886592 |
|---|---|
| author | Natalya Ross Amirhossein Rostami Hyongki Lee Chi-Hung Chang Faisal Hossain Pietro Milillo Tien L. T. Du Susantha Jayasinghe Peeranan Towashiraporn |
| author_facet | Natalya Ross Amirhossein Rostami Hyongki Lee Chi-Hung Chang Faisal Hossain Pietro Milillo Tien L. T. Du Susantha Jayasinghe Peeranan Towashiraporn |
| author_sort | Natalya Ross |
| collection | DOAJ |
| description | In the absence of in-situ data, satellite radar altimetry, critical for studies requiring water elevation data, faces challenges in outlier removal over reservoirs, influenced by surrounding land. We present JASTER (Jason Altimetry Stand-Alone Tool for Enhanced Research), an open-source, fully automated tool processing Jason-2/3 altimetry data for water elevation time series generation over a user-defined inland water body. JASTER uses two outlier removal approaches. The first method employs interquartile range (IQR)-based filtering and K-means clustering. The second method incorporates water occurrence (WO) and Digital Elevation Model (DEM)-derived elevation thresholds. The Hampel filter embedded in JASTER further removes non-physical peaks in the time series caused by signal noise. We validated JASTER’s capabilities using 44 Jason altimeter crossings over 37 water bodies in the US and Canada. We assessed the significance of applying water occurrence and elevation thresholds, and investigated how the Hampel filter parameters and satellite crossing lengths affect accuracy. In all case studies, the Hampel filter significantly increased the consistency between JASTER-derived water elevations and in-situ data. Moreover, the DEM + WO-based method outperformed the IQR-based outlier removal approach in some cases where the greater number of altimeter footprints belonged to land instead of water. |
| format | Article |
| id | doaj-art-246b4e2a3c084a9aafade87b528c144f |
| institution | OA Journals |
| issn | 1753-8947 1753-8955 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj-art-246b4e2a3c084a9aafade87b528c144f2025-08-20T01:54:34ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552024-12-0117110.1080/17538947.2024.2406387Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research)Natalya Ross0Amirhossein Rostami1Hyongki Lee2Chi-Hung Chang3Faisal Hossain4Pietro Milillo5Tien L. T. Du6Susantha Jayasinghe7Peeranan Towashiraporn8Department of Civil & Environmental Engineering, University of Houston, Houston, TX, USADepartment of Civil & Environmental Engineering, University of Houston, Houston, TX, USADepartment of Civil & Environmental Engineering, University of Houston, Houston, TX, USADepartment of Civil & Environmental Engineering, University of Houston, Houston, TX, USADepartment of Civil & Environmental Engineering, University of Washington, Seattle, WA, USADepartment of Civil & Environmental Engineering, University of Houston, Houston, TX, USADepartment of Civil & Environmental Engineering, University of Houston, Houston, TX, USASERVIR Southeast Asia, Bangkok, ThailandSERVIR Southeast Asia, Bangkok, ThailandIn the absence of in-situ data, satellite radar altimetry, critical for studies requiring water elevation data, faces challenges in outlier removal over reservoirs, influenced by surrounding land. We present JASTER (Jason Altimetry Stand-Alone Tool for Enhanced Research), an open-source, fully automated tool processing Jason-2/3 altimetry data for water elevation time series generation over a user-defined inland water body. JASTER uses two outlier removal approaches. The first method employs interquartile range (IQR)-based filtering and K-means clustering. The second method incorporates water occurrence (WO) and Digital Elevation Model (DEM)-derived elevation thresholds. The Hampel filter embedded in JASTER further removes non-physical peaks in the time series caused by signal noise. We validated JASTER’s capabilities using 44 Jason altimeter crossings over 37 water bodies in the US and Canada. We assessed the significance of applying water occurrence and elevation thresholds, and investigated how the Hampel filter parameters and satellite crossing lengths affect accuracy. In all case studies, the Hampel filter significantly increased the consistency between JASTER-derived water elevations and in-situ data. Moreover, the DEM + WO-based method outperformed the IQR-based outlier removal approach in some cases where the greater number of altimeter footprints belonged to land instead of water.https://www.tandfonline.com/doi/10.1080/17538947.2024.2406387Satellite altimetrywater elevation time seriesoutlier detectionHampel filterwater occurrencedigital elevation model |
| spellingShingle | Natalya Ross Amirhossein Rostami Hyongki Lee Chi-Hung Chang Faisal Hossain Pietro Milillo Tien L. T. Du Susantha Jayasinghe Peeranan Towashiraporn Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) International Journal of Digital Earth Satellite altimetry water elevation time series outlier detection Hampel filter water occurrence digital elevation model |
| title | Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) |
| title_full | Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) |
| title_fullStr | Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) |
| title_full_unstemmed | Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) |
| title_short | Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research) |
| title_sort | monitoring reservoir water elevation changes using jason 2 3 altimetry satellite missions exploring the capabilities of jaster jason 2 3 altimetry stand alone tool for enhanced research |
| topic | Satellite altimetry water elevation time series outlier detection Hampel filter water occurrence digital elevation model |
| url | https://www.tandfonline.com/doi/10.1080/17538947.2024.2406387 |
| work_keys_str_mv | AT natalyaross monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT amirhosseinrostami monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT hyongkilee monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT chihungchang monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT faisalhossain monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT pietromilillo monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT tienltdu monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT susanthajayasinghe monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch AT peeranantowashiraporn monitoringreservoirwaterelevationchangesusingjason23altimetrysatellitemissionsexploringthecapabilitiesofjasterjason23altimetrystandalonetoolforenhancedresearch |