Results 31 to 40 of about 290 (136)

SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In this article, L-band vegetation optical depth (L-VOD) retrieved by Soil Moisture and Ocean Salinity (SMOS) in four large continents is compared against vegetation parameters (RH100 and PAI) retrieved by Global Ecosystem Dynamics Investigation (GEDI ...
Cristina Vittucci, Leila Guerriero, Paolo Ferrazzoli, Philippe Richaume, Yann H. Kerr   +4 more
doaj   +1 more source

Sentinel-1 vegetation optical depth retrievals over the international soil moisture network

International Journal of Digital Earth
Vegetation optical depth (VOD), a microwave-based vegetation index for vegetation water content and biomass, is primarily retrieved from low spatial resolution passive microwave data, and few studies have focused on VOD retrievals from active microwave ...
Zhixuan Lu, Lei Fan, Xiangzhuo Liu, Xiaojing Bai, Nicolas Baghdadi, Frédéric Frappart, Jiangyuan Zeng, Gabrielle De Lannoy, Jian Peng, Zanpin Xing, Xiaojun Li, Zhuangzhuang Feng, Xin Li, Jean-Pierre Wigneron   +13 more
doaj   +1 more source

Global Flash Drought Prediction Through Evaporative Stress Forecasting

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Flash droughts pose severe risks to societies and ecosystems due to their sudden onset and rapid intensification. Predicting their vegetation impacts at subseasonal timescales remains difficult. Advances in hybrid physics‐AI models and weather forecasting create new opportunities to enhance the predictability of evaporative stress, a key ...
Qiqi Gou, Akash Koppa, Hylke E. Beck, Yonghua Zhu, Haishen Lü, Hao Li, Huiling Yuan, Xiaohan Yu, Diego G. Miralles   +8 more
wiley   +1 more source

A global daily seamless 9-km Vegetation Optical Depth (VOD) product from 2010 to 2021

Earth System Science Data
Abstract. Vegetation optical depth (VOD) products provide information on vegetation water content and correlate with vegetation growth status, which are closely related to the global water and carbon cycles. The L-band signal penetrates deeper into the vegetation canopy than the higher frequency bands used for many previous VOD retrievals.
D. Hu, Y. Wang, H. Jing, L. Yue, Q. Zhang, L. Fan, Q. Yuan, Q. Yuan, Q. Yuan, H. Shen, L. Zhang   +10 more
openaire   +4 more sources

Widespread Increase in Global Plant Water Stress Obscured by Greening

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Understanding the vulnerability of plants to more severe and frequent drought events and developing adaptive management strategies requires robust methods for quantifying long‐term changes in plant water stress (PWS). Most data‐driven explorations of long‐term trends in PWS have focused on alterations in canopy structure (e.g., leaf area index)
Qing Chang, Lixin Wang, Mallory L. Barnes, Darren L. Ficklin, Michael C. Benson, Kimberly A. Novick   +5 more
wiley   +1 more source

On the Importance of the Jacobian of a DNN Observation Operator in Land Data Assimilation

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract A recent study (Shan et al., 2024, https://doi.org/10.1016/j.rse.2024.114167) showed that using a Deep‐Neural‐Network (DNN)‐based observation operator in land data assimilation (DA) does not guarantee improvements in surface soil moisture (WG2).
Xu Shan, Susan Steele‐Dunne, Sebastian Hahn, Wolfgang Wagner, Bertrand Bonan, Ou Ku   +5 more
wiley   +1 more source

Assimilation of Satellite‐Based Forest Biomass, Productivity and Leaf Area Index in a Global Land Model Incorporating Parameter Spatial Variations and Age Effects

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Disturbances profoundly impact forest capacity for sequestering and storing carbon, and the recovery rates after disturbances vary geographically. Many terrestrial carbon models inadequately simulate the effects of forest disturbances on biomass due to their reliance on equilibrium assumptions, the absence of historical disturbance data, as ...
Rui Ma, Yuan Zhang, Philippe Ciais, Wei Li, Jingfeng Xiao, Yingping Wang, Liyang Liu, Songyan Zhu   +7 more
wiley   +1 more source

The underappreciated roles of fog and dew on vegetation and biocrusts

New Phytologist, Volume 251, Issue 1, Page 46-63, July 2026.
Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
wiley   +1 more source

Quantitative assessment of various proxies for downscaling coarse-resolution VOD products over the contiguous United States

International Journal of Applied Earth Observations and Geoinformation
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.
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   +12 more
doaj   +1 more source

Tracking Water Dynamics of a Temperate Forest Under Drought and Non‐Drought Conditions Using Active and Passive Microwave and Optical Remote Sensing

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Water status, water dynamics, and ecohydrological resilience of a protected German beech forest during the 2018–2020 multi‐year drought are assessed using over six years of multi‐frequency remote sensing data, integrating active, passive, and optical sensors with varying canopy penetration depths, highlighting the importance of monitoring ...
Florian M. Hellwig, Anke Fluhrer, Clémence Dubois, Konstantin Schellenberg, David Chaparro, Markus Zehner, Anne Klosterhalfen, María Piles, Christiane Schmullius, Harald Kunstmann, Thomas Jagdhuber   +10 more
wiley   +1 more source