Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements
This paper addresses the estimation of vertical vegetation density profiles from multibaseline interferometric synthetic aperture radar (InSAR) data from the AirSAR aircraft at C band over primary, secondary, and abandoned-pasture stands at La Selva Biological Station, Costa Rica in 2004. Profiles w...
| Autor principal: | Treuhaft, Robert N. |
|---|---|
| Outros Autores: | Chapman, Bruce D., Santos, João Roberto dos, Gonçalves, Fábio Guimarães, Vieira Dutra, Luciano, Graça, Paulo Maurício Lima Alencastro de, Drake, Jason B. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Geophysical Research Atmospheres
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18493 |
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oai:repositorio:1-18493 |
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oai:repositorio:1-18493 Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements Treuhaft, Robert N. Chapman, Bruce D. Santos, João Roberto dos Gonçalves, Fábio Guimarães Vieira Dutra, Luciano Graça, Paulo Maurício Lima Alencastro de Drake, Jason B. Agriculture Biodiversity Geodetic Satellites Imaging Systems Measurement Errors Optical Radar Radar Statistics Synthetic Aperture Radar Synthetic Apertures Vegetation C-bands Costa Rica Field Data Field Measurement Global Carbon Cycle Inducing Fields Interferometric Synthetic Aperture Radars Leaf Area Lidar Data Lidar Measurements Lidar Profiles Measurement Techniques Multi-baseline Standard Deviation Tropical Forest Vegetation Density Vegetation Distribution Radar Measurement Airborne Sensing Altitude Biodiversity Calibration Carbon Cycle Data Acquisition Data Set Field Method Leaf Area Lidar Synthetic Aperture Radar Tropical Forest Vegetation Index Costa Rica La Selva Biological Station Limon This paper addresses the estimation of vertical vegetation density profiles from multibaseline interferometric synthetic aperture radar (InSAR) data from the AirSAR aircraft at C band over primary, secondary, and abandoned-pasture stands at La Selva Biological Station, Costa Rica in 2004. Profiles were also estimated from field data taken in 2006 and lidar data taken with the LVIS, 25 m spot instrument in 2005. After motivating the study of tropical forest profiles based on their role in the global carbon cycle, ecosystem state, and biodiversity, this paper describes the InSAR, field, and lidar data acquisitions and analyses. Beyond qualitative agreement between profiles from the 3 measurement techniques, results show that InSAR and lidar profile-averaged mean height have RMS scatters about field-measured means of 3.4 m and 3.2 m, 16% and 15% of the average mean height, respectively. InSAR and lidar standard deviations of the vegetation distribution have RMS scatters about the field standard deviations of 1.9 m and 1.5 m, or 27% and 21 %, respectively. Dominant errors in the profile-averaged mean height for each measurement technique were modeled. InSAR inaccuracies, dominated by ambiguities in finding the ground altitude and coherence calibration, together account for about 3 m of InSAR error in the mean height. The dominant, modeled error for the field measurements was the inaccuracy in modeling the trees as uniformly filled volumes of leaf area, inducing field errors in mean height of about 3 m. The dominant, modeled lidar error, also due to finding the ground, was 2 m. Copyright 2009 by the American Geophysical Union. 2020-06-15T22:01:58Z 2020-06-15T22:01:58Z 2009 Artigo https://repositorio.inpa.gov.br/handle/1/18493 10.1029/2008JD011674 en Volume 114, Número 23 Restrito Journal of Geophysical Research Atmospheres |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Agriculture Biodiversity Geodetic Satellites Imaging Systems Measurement Errors Optical Radar Radar Statistics Synthetic Aperture Radar Synthetic Apertures Vegetation C-bands Costa Rica Field Data Field Measurement Global Carbon Cycle Inducing Fields Interferometric Synthetic Aperture Radars Leaf Area Lidar Data Lidar Measurements Lidar Profiles Measurement Techniques Multi-baseline Standard Deviation Tropical Forest Vegetation Density Vegetation Distribution Radar Measurement Airborne Sensing Altitude Biodiversity Calibration Carbon Cycle Data Acquisition Data Set Field Method Leaf Area Lidar Synthetic Aperture Radar Tropical Forest Vegetation Index Costa Rica La Selva Biological Station Limon |
| spellingShingle |
Agriculture Biodiversity Geodetic Satellites Imaging Systems Measurement Errors Optical Radar Radar Statistics Synthetic Aperture Radar Synthetic Apertures Vegetation C-bands Costa Rica Field Data Field Measurement Global Carbon Cycle Inducing Fields Interferometric Synthetic Aperture Radars Leaf Area Lidar Data Lidar Measurements Lidar Profiles Measurement Techniques Multi-baseline Standard Deviation Tropical Forest Vegetation Density Vegetation Distribution Radar Measurement Airborne Sensing Altitude Biodiversity Calibration Carbon Cycle Data Acquisition Data Set Field Method Leaf Area Lidar Synthetic Aperture Radar Tropical Forest Vegetation Index Costa Rica La Selva Biological Station Limon Treuhaft, Robert N. Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| topic_facet |
Agriculture Biodiversity Geodetic Satellites Imaging Systems Measurement Errors Optical Radar Radar Statistics Synthetic Aperture Radar Synthetic Apertures Vegetation C-bands Costa Rica Field Data Field Measurement Global Carbon Cycle Inducing Fields Interferometric Synthetic Aperture Radars Leaf Area Lidar Data Lidar Measurements Lidar Profiles Measurement Techniques Multi-baseline Standard Deviation Tropical Forest Vegetation Density Vegetation Distribution Radar Measurement Airborne Sensing Altitude Biodiversity Calibration Carbon Cycle Data Acquisition Data Set Field Method Leaf Area Lidar Synthetic Aperture Radar Tropical Forest Vegetation Index Costa Rica La Selva Biological Station Limon |
| description |
This paper addresses the estimation of vertical vegetation density profiles from multibaseline interferometric synthetic aperture radar (InSAR) data from the AirSAR aircraft at C band over primary, secondary, and abandoned-pasture stands at La Selva Biological Station, Costa Rica in 2004. Profiles were also estimated from field data taken in 2006 and lidar data taken with the LVIS, 25 m spot instrument in 2005. After motivating the study of tropical forest profiles based on their role in the global carbon cycle, ecosystem state, and biodiversity, this paper describes the InSAR, field, and lidar data acquisitions and analyses. Beyond qualitative agreement between profiles from the 3 measurement techniques, results show that InSAR and lidar profile-averaged mean height have RMS scatters about field-measured means of 3.4 m and 3.2 m, 16% and 15% of the average mean height, respectively. InSAR and lidar standard deviations of the vegetation distribution have RMS scatters about the field standard deviations of 1.9 m and 1.5 m, or 27% and 21 %, respectively. Dominant errors in the profile-averaged mean height for each measurement technique were modeled. InSAR inaccuracies, dominated by ambiguities in finding the ground altitude and coherence calibration, together account for about 3 m of InSAR error in the mean height. The dominant, modeled error for the field measurements was the inaccuracy in modeling the trees as uniformly filled volumes of leaf area, inducing field errors in mean height of about 3 m. The dominant, modeled lidar error, also due to finding the ground, was 2 m. Copyright 2009 by the American Geophysical Union. |
| format |
Artigo |
| author |
Treuhaft, Robert N. |
| author2 |
Chapman, Bruce D. Santos, João Roberto dos Gonçalves, Fábio Guimarães Vieira Dutra, Luciano Graça, Paulo Maurício Lima Alencastro de Drake, Jason B. |
| author2Str |
Chapman, Bruce D. Santos, João Roberto dos Gonçalves, Fábio Guimarães Vieira Dutra, Luciano Graça, Paulo Maurício Lima Alencastro de Drake, Jason B. |
| title |
Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| title_short |
Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| title_full |
Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| title_fullStr |
Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| title_full_unstemmed |
Vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| title_sort |
vegetation profiles in tropical forests from multibaseline interferometric synthetic aperture radar, field, and lidar measurements |
| publisher |
Journal of Geophysical Research Atmospheres |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18493 |
| _version_ |
1787144355540107264 |
| score |
11.755432 |