Zobrazeno 1 - 10
of 81
pro vyhledávání: '"vegetation optical depth ( $VOD$ )"'
Autor:
Jiaqi Zhang, Tianjie Zhao, Shurun Tan, Nemesio Rodriguez-Fernandez, Huazhu Xue, Na Yang, Yann Kerr, Jiancheng Shi
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 3, Pp 744-760 (2024)
The two vegetation transfer parameters of [Formula: see text] (Vegetation Optical Depth,VOD) and [Formula: see text] (Omega) could vary significantly across microwave channels in terms of frequencies, polarizations, and incidence angles, and their ch
Externí odkaz:
https://doaj.org/article/458ae538721e4a82886ce03d6c2a4586
Autor:
Zhongbing Chang, Lei Fan, Jean-Pierre Wigneron, Ying-Ping Wang, Xiaojun Li, Mengjia Wang, Xiangzhuo Liu, Huan Wang, Tianxiang Cui, Ling Yu, Jianping Wu, Xin Xiong, Shuo Zhang, Xuli Tang, Junhua Yan
Publikováno v:
Geo-spatial Information Science, Pp 1-16 (2024)
The microwave-derived vegetation optical depth (VOD) products were used to monitor aboveground biomass (AGB) at regional to global scales, but the ability of VOD to monitor AGB in China is uncertain. This study evaluated the sensitivity of four VOD p
Externí odkaz:
https://doaj.org/article/d4686fcd19204f278571ec5f24edab84
Autor:
Shiyu Zhong, Lei Fan, Gabrielle De Lannoy, Frédéric Frappart, Jiangyuan Zeng, Mariette Vreugdenhil, Jian Peng, Xiangzhuo Liu, Zanpin Xing, Mengjia Wang, Xiaojun Li, Huan Wang, Jean-Pierre Wigneron
Publikováno v:
International Journal of Applied Earth Observations and Geoinformation, Vol 130, Iss , Pp 103910- (2024)
Vegetation Optical Depth (VOD), a vegetation parameter that quantifies the extinction effect of microwaves penetrating the canopy, plays a crucial role in global-scale biomass monitoring and climate change research. However, the spatial gridding of e
Externí odkaz:
https://doaj.org/article/8cdf2a4455d640a091af7d29d0d6ccbd
Autor:
Kyeungwoo Cho, Robinson Negron-Juarez, Andreas Colliander, Eric G. Cosio, Norma Salinas, Alessandro de Araujo, Jefferey Q. Chambers, Jingfeng Wang
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 8724-8736 (2024)
Soil moisture (SM) is crucial for the Earth's ecosystem, impacting climate and vegetation health. Obtaining in situ observations of SM is labor-intensive and complex, particularly in remote and densely vegetated regions like the Amazon rainforest. NA
Externí odkaz:
https://doaj.org/article/e6b96d9f833148f0845042da30b45088
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 5093-5105 (2024)
In this study, we conducted an empirical investigation on mobile global navigation satellite system (GNSS) transmissometry (GNSS-T) measurements to explore vegetation optical depth (VOD). Our approach involved using a dual-receiver setup, with one re
Externí odkaz:
https://doaj.org/article/6b6c6d7952d846389b53aba2c15d5cf9
Autor:
Claudia Olivares-Cabello, David Chaparro, Merce Vall-llossera, Adriano Camps, Carlos Lopez-Martinez
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 538-552 (2023)
Vegetation optical depth (VOD) has contributed to monitor vegetation dynamics and carbon stocks at different microwave frequencies. Nevertheless, there is a need to determine which are the appropriate frequencies to monitor different vegetation types
Externí odkaz:
https://doaj.org/article/8e4c6df4e8124343b113d686df65c065
Autor:
Julian Chaubell, Simon Yueh, R. Scott Dunbar, Andreas Colliander, Dara Entekhabi, Steven K. Chan, Fan Chen, Xiaolan Xu, Rajat Bindlish, Peggy O'Neill, Jun Asanuma, Aaron A. Berg, David D. Bosch, Todd Caldwell, Michael H. Cosh, Chandra Holifield Collins, Karsten H. Jensen, Jose Martinez-Fernandez, Mark Seyfried, Patrick J. Starks, Zhongbo Su, Marc Thibeault, Jeffrey P. Walker
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 102-114 (2022)
In August 2020, soil moisture active passive (SMAP) released a new version of its soil moisture and vegetation optical depth (VOD) retrieval products. In this article, we review the methodology followed by the SMAP regularized dual-channel retrieval
Externí odkaz:
https://doaj.org/article/5bd2c1ae9466438282067d08a025cb87
Akademický článek
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Autor:
Dominic Fawcett, Andrew M. Cunliffe, Stephen Sitch, Michael O’Sullivan, Karen Anderson, Richard E. Brazier, Timothy C. Hill, Peter Anthoni, Almut Arneth, Vivek K. Arora, Peter R. Briggs, Daniel S. Goll, Atul K. Jain, Xiaojun Li, Danica Lombardozzi, Julia E. M. S. Nabel, Benjamin Poulter, Roland Séférian, Hanqin Tian, Nicolas Viovy, Jean-Pierre Wigneron, Andy Wiltshire, Soenke Zaehle
Publikováno v:
Frontiers in Environmental Science, Vol 10 (2022)
Drylands cover ca. 40% of the land surface and are hypothesised to play a major role in the global carbon cycle, controlling both long-term trends and interannual variation. These insights originate from land surface models (LSMs) that have not been
Externí odkaz:
https://doaj.org/article/696d7b37db1047f292fd7f30c2c297a1
Autor:
Zhilan Zhou, Lei Fan, Gabrielle De Lannoy, Xiangzhuo Liu, Jian Peng, Xiaojing Bai, Frédéric Frappart, Nicolas Baghdadi, Zanpin Xing, Xiaojun Li, Mingguo Ma, Xin Li, Tao Che, Liying Geng, Jean-Pierre Wigneron
Publikováno v:
Remote Sensing, Vol 14, Iss 21, p 5468 (2022)
Vegetation optical depth (VOD), as a microwave-based estimate of vegetation water and biomass content, is increasingly used to study the impact of global climate and environmental changes on vegetation. However, current global operational VOD product
Externí odkaz:
https://doaj.org/article/b106d07081e24ba19a91361421a604aa