Slope Estimation from ICESat/GLAS
We present a novel technique to infer ground slope angle from waveform LiDAR, known as the independent slope method (ISM). The technique is applied to large footprint waveforms (\(\sim\) mean diameter) from the Ice, Cloud and Land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS)...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2014-10-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-4292/6/10/10051 |
| _version_ | 1818870237327523840 |
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| author | Craig Mahoney Natascha Kljun Sietse O. Los Laura Chasmer Jorg M. Hacker Christopher Hopkinson Peter R. J. North Jacqueline A. B. Rosette Eva van Gorsel |
| author_facet | Craig Mahoney Natascha Kljun Sietse O. Los Laura Chasmer Jorg M. Hacker Christopher Hopkinson Peter R. J. North Jacqueline A. B. Rosette Eva van Gorsel |
| author_sort | Craig Mahoney |
| collection | DOAJ |
| description | We present a novel technique to infer ground slope angle from waveform LiDAR, known as the independent slope method (ISM). The technique is applied to large footprint waveforms (\(\sim\) mean diameter) from the Ice, Cloud and Land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) to produce a slope dataset of near-global coverage at \(0.5^{\circ} \times 0.5^{\circ}\) resolution. ISM slope estimates are compared against high resolution airborne LiDAR slope measurements for nine sites across three continents. ISM slope estimates compare better with the aircraft data (R\(^{2}=0.87\) and RMSE\(=5.16^{\circ}\)) than the Shuttle Radar Topography Mission Digital Elevation Model (SRTM DEM) inferred slopes (R\(^{2}=0.71\) and RMSE\(=8.69^{\circ}\)) ISM slope estimates are concurrent with GLAS waveforms and can be used to correct biophysical parameters, such as tree height and biomass. They can also be fused with other DEMs, such as SRTM, to improve slope estimates. |
| first_indexed | 2024-12-19T12:03:50Z |
| format | Article |
| id | doaj.art-3352db413e284dabac02abae07efc225 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-12-19T12:03:50Z |
| publishDate | 2014-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-3352db413e284dabac02abae07efc2252022-12-21T20:22:24ZengMDPI AGRemote Sensing2072-42922014-10-01610100511006910.3390/rs61010051rs61010051Slope Estimation from ICESat/GLASCraig Mahoney0Natascha Kljun1Sietse O. Los2Laura Chasmer3Jorg M. Hacker4Christopher Hopkinson5Peter R. J. North6Jacqueline A. B. Rosette7Eva van Gorsel8Department of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UKDepartment of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UKDepartment of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UKDepartment of Geography, University of Lethbridge, Lethbridge, Alberta, T1K3M4, CanadaAirborne Research Australia, Flinders University, Adelaide, SA5042, AustraliaDepartment of Geography, University of Lethbridge, Lethbridge, Alberta, T1K3M4, CanadaDepartment of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UKDepartment of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UKOceans and Atmosphere, CSIRO, Canberra, ACT 2601, AustraliaWe present a novel technique to infer ground slope angle from waveform LiDAR, known as the independent slope method (ISM). The technique is applied to large footprint waveforms (\(\sim\) mean diameter) from the Ice, Cloud and Land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) to produce a slope dataset of near-global coverage at \(0.5^{\circ} \times 0.5^{\circ}\) resolution. ISM slope estimates are compared against high resolution airborne LiDAR slope measurements for nine sites across three continents. ISM slope estimates compare better with the aircraft data (R\(^{2}=0.87\) and RMSE\(=5.16^{\circ}\)) than the Shuttle Radar Topography Mission Digital Elevation Model (SRTM DEM) inferred slopes (R\(^{2}=0.71\) and RMSE\(=8.69^{\circ}\)) ISM slope estimates are concurrent with GLAS waveforms and can be used to correct biophysical parameters, such as tree height and biomass. They can also be fused with other DEMs, such as SRTM, to improve slope estimates.http://www.mdpi.com/2072-4292/6/10/10051LiDARslopeterrainwaveformSRTMbiophysical parameter retrieval |
| spellingShingle | Craig Mahoney Natascha Kljun Sietse O. Los Laura Chasmer Jorg M. Hacker Christopher Hopkinson Peter R. J. North Jacqueline A. B. Rosette Eva van Gorsel Slope Estimation from ICESat/GLAS Remote Sensing LiDAR slope terrain waveform SRTM biophysical parameter retrieval |
| title | Slope Estimation from ICESat/GLAS |
| title_full | Slope Estimation from ICESat/GLAS |
| title_fullStr | Slope Estimation from ICESat/GLAS |
| title_full_unstemmed | Slope Estimation from ICESat/GLAS |
| title_short | Slope Estimation from ICESat/GLAS |
| title_sort | slope estimation from icesat glas |
| topic | LiDAR slope terrain waveform SRTM biophysical parameter retrieval |
| url | http://www.mdpi.com/2072-4292/6/10/10051 |
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