مؤتمر
GLOBAL L-BAND VEGETATION VOLUME FRACTION ESTIMATES FOR MODELING VEGETATION OPTICAL DEPTH
| العنوان: | GLOBAL L-BAND VEGETATION VOLUME FRACTION ESTIMATES FOR MODELING VEGETATION OPTICAL DEPTH |
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| المؤلفون: | Chaparro, David, Jagdhuber, Thomas, Piles, María, Entekhabi, Dara, Jonard, François, Fluhrer, Anke, Feldman, Andrew, Vall-Llossera, Mercè, Camps, Adriano |
| المصدر: | urn:isbn:978-1-66540-369-6 IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings (2021); 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, Brussels, Belgium [BE], 12-07-2021 => 16-07-2021 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers Inc., 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | aquarius scatterometer, biomass, vegetation gravimetric moisture content, Vegetation structure, %moisture, Aquariu scatterometer, AQUARIUS, Biomass structure, Microwave emissions, Scatterometers, Seasonality, Vegetation gravimetric moisture content, Vegetation optical depth, Computer Science Applications, Earth and Planetary Sciences (all), Life sciences, Environmental sciences & ecology, Physical, chemical, mathematical & earth Sciences, Earth sciences & physical geography, Sciences du vivant, Sciences de l’environnement & écologie, Physique, chimie, mathématiques & sciences de la terre, Sciences de la terre & géographie physique |
| الوصف: | The attenuation of microwave emissions through the canopy is quantified by the vegetation optical depth (VOD), which is related to the amount of water, the biomass and the structure of vegetation. To provide microwave-derived plant water estimates, one must account for biomass/structure contributions in order to extract the water component from the VOD. This study uses Aquarius scatterometer data to build an L-band global seasonality of vegetation volume fraction (d), representative of biomass/structure dynamics. The dynamic range of d is adapted for its application in a gravimetric moisture (Mg) retrieval model. Results show that d ranging from 0 to 3.35·10-4 is needed for modelling physically reasonable Mg values. The global average of d shows consistent spatial patterns across vegetation distributions, and d seasonality is coherent with the phenology of the studied vegetation types. These findings enable the separation of information on vegetation water and biomass/structure inherent within VOD. |
| نوع الوثيقة: | conference paper http://purl.org/coar/resource_type/c_5794 conferenceObject peer reviewed |
| اللغة: | English |
| Relation: | http://xplorestaging.ieee.org/ielx7/9553015/9553016/09554872.pdf?arnumber=9554872 |
| DOI: | 10.1109/IGARSS47720.2021.9554872 |
| URL الوصول: | https://orbi.uliege.be/handle/2268/311701 |
| حقوق: | open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| رقم الأكسشن: | edsorb.311701 |
| قاعدة البيانات: | ORBi |
| DOI: | 10.1109/IGARSS47720.2021.9554872 |
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