Results 61 to 70 of about 365 (171)

Multi‐Scale Soil Salinization Dynamics From Global to Pore Scale: A Review

Reviews of Geophysics, Volume 62, Issue 4, December 2024.
Abstract Soil salinization refers to the accumulation of water‐soluble salts in the upper part of the soil profile. Excessive levels of soil salinity affects crop production, soil health, and ecosystem functioning. This phenomenon threatens agriculture, food security, soil stability, and fertility leading to land degradation and loss of essential soil ...
Nima Shokri, Amirhossein Hassani, Muhammad Sahimi   +2 more
wiley   +1 more source

Hydrology on Solid Grounds? Integration Is Key to Closing Knowledge Gaps Concerning Landscape Subsurface Water Storage Dynamics

Hydrological Processes, Volume 38, Issue 11, November 2024.
An increasingly wide and diverse range of observational products of landscape subsurface water storage dynamics is maturing, while new ones are still being added; depicted here from cosmic‐ray neutron sensing (CRNS) to satellite missions such as GRACE‐FO and CYGNSS.
Sascha E. Oswald, Lisa Angermann, Heye R. Bogena, Michael Förster, Almudena García‐García, Gunnar Lischeid, Eva N. Paton, Daniel Altdorff, Sabine Attinger, Andreas Güntner, Andreas Hartmann, Harrie‐Jan Hendricks Franssen, Anke Hildebrandt, Birgit Kleinschmit, Rene Orth, Jian Peng, Masahiro Ryo, Martin Schrön, Wolfgang Wagner, Thorsten Wagener   +19 more
wiley   +1 more source

The Potential of Hydrogeodesy to Address Water‐Related and Sustainability Challenges

Water Resources Research, Volume 60, Issue 11, November 2024.
Abstract Increasing climatic and human pressures are changing the world's water resources and hydrological processes at unprecedented rates. Understanding these changes requires comprehensive monitoring of water resources. Hydrogeodesy, the science that measures the Earth's solid and aquatic surfaces, gravity field, and their changes over time ...
Fernando Jaramillo, Saeid Aminjafari, Pascal Castellazzi, Ayan Fleischmann, Etienne Fluet‐Chouinard, Hossein Hashemi, Clara Hubinger, Hilary R. Martens, Fabrice Papa, Tilo Schöne, Angelica Tarpanelli, Vili Virkki, Lan Wang‐Erlandsson, Rodrigo Abarca‐del‐Rio, Adrian Borsa, Georgia Destouni, Giuliano Di Baldassarre, Michele‐Lee Moore, José Andrés Posada‐Marín, Shimon Wdowinski, Susanna Werth, George H. Allen, Donald Argus, Omid Elmi, Luciana Fenoglio, Frédéric Frappart, Xander Huggins, Zahra Kalantari, Simon Munier, Sebastián Palomino‐Ángel, Abigail Robinson, Kristian Rubiano, Gabriela Siles, Marc Simard, Chunqiao Song, Christopher Spence, Mohammad J. Tourian, Yoshihide Wada, Chao Wang, Jida Wang, Fangfang Yao, Wouter R. Berghuijs, Jean‐François Cretaux, James Famiglietti, Alice Fassoni‐Andrade, Jessica V. Fayne, Félix Girard, Matti Kummu, Kristine M. Larson, Martin Marañon, Daniel M. Moreira, Karina Nielsen, Tamlin Pavelsky, Francisco Pena, J. T. Reager, Maria Cristina Rulli, Juan F. Salazar   +56 more
wiley   +1 more source

Comprehensive Evaluation of Using TechDemoSat-1 and CYGNSS Data to Estimate Soil Moisture over Mainland China

Remote Sensing, 2020
Spaceborne Global Navigation Satellite System Reflectometry (GNSS-R) provides a new opportunity for land observation. This study is the first to compare and evaluate the performance of the only two spaceborne GNSS-R satellite missions whose data are ...
Ting Yang, Wei Wan, Zhigang Sun, Baojian Liu, Sen Li, Xiuwan Chen   +5 more
doaj   +1 more source

Machine learning‐driven microwave imaging for soil moisture estimation near leaky pipe

Electronics Letters, Volume 60, Issue 21, November 2024.
This paper introduces a system for determining the local soil moisture percentage in the vicinity of buried pipelines, utilizing microwave imaging and machine learning tools. Abstract Characterizing soil moisture around drip irrigation pipes is crucial for precise and optimized farming.
Mohammad Ramezaninia, Mohammadreza Shams, Mohammad Zoofaghari   +2 more
wiley   +1 more source

Diurnal Vegetation Moisture Cycle in the Amazon and Response to Water Stress

Geophysical Research Letters, Volume 51, Issue 19, 16 October 2024.
Abstract Water stress in the Amazon is exacerbated by rising temperatures and reduced moisture levels. However, understanding forest responses to increased aridity is hindered by limited in situ water potential observations in the Amazon. Remote sensing of water content has emerged as a promising metric.
Milad Asgarimehr, Dara Entekhabi, Adriano Camps   +2 more
wiley   +1 more source

Joint Use of Spaceborne Microwave Sensor Data and CYGNSS Data to Observe Tropical Cyclones

Remote Sensing, 2020
The joint use of spaceborne microwave sensor data and Cyclone Global Navigation Satellite System (CYGNSS) data to observe tropical cyclones (TCs) is presented in this paper.
Shiwei Wang, Shuzhu Shi, Binbin Ni
doaj   +1 more source

Development of the CYGNSS Geophysical Model Function for Wind Speed

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
Geophysical model functions (GMFs) are developed which map the Level 1 observables made by the Cyclone Global Navigation Satellite System (CYGNSS) radar receivers to ocean surface wind speed. The observables are: 1) the normalized bistatic radar cross section ( σo ) of the ocean surface; and 2) the slope of the leading edge of the radar return pulse ...
Christopher S. Ruf, Rajeswari Balasubramaniam   +1 more
openaire   +1 more source

Daily Soil Moisture Retrieval by Fusing CYGNSS and Multi-Source Auxiliary Data Using Machine Learning Methods. [PDF]

Sensors (Basel), 2023
Yang T, Wang J, Sun Z, Li S.
europepmc   +1 more source

Impacts of Spaceborne GNSS-R System Observations on Storm Surge Prediction: A Hurricane Harvey Case Study Using CYGNSS Full DDM Downlinks

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This work assesses the impact of the Cyclone Global Navigation Satellite System (CYGNSS) (full delay-Doppler map) informed wind fields on storm surge simulations using the constellation's storm observations.
Younghun Kang, Ethan Kubatko, Mohammad M. Al-Khaldi, Joel T. Johnson, Suranjan Nepal, Aaron Sines   +5 more
doaj   +1 more source