Results 41 to 50 of about 2,336,597 (324)

SGD-SM: Generating Seamless Global Daily AMSR2 Soil Moisture Long-term Productions (2013–2019) [PDF]

open access: yes, 2020
Abstract. High quality and long-term soil moisture productions are significant for hydrologic monitoring and agricultural management. However, the acquired daily soil moisture productions are incomplete in global land (just about 30 %∼80 % coverage ratio), due to the satellite orbit coverage and the limitations of soil moisture retrieving algorithms ...
Qiang Zhang   +5 more
openaire   +1 more source

Mapping the spatial variation of soil moisture at the large scale using GPR for pavement applications [PDF]

open access: yes, 2015
The characterization of shallow soil moisture spatial variability at the large scale is a crucial issue in many research studies and fields of application ranging from agriculture and geology to civil and environmental engineering.
M. Giudici   +9 more
core   +1 more source

Calibration and Validation of a Low-Cost Capacitive Moisture Sensor to Integrate the Automated Soil Moisture Monitoring System

open access: yesAgriculture, 2019
Readily available moisture in the root zone is very important for optimum plant growth. The available techniques to determine soil moisture content have practical limitations owing to their high cost, dependence on labor, and time consumption.
Ekanayaka Achchillage Ayesha Dilrukshi Nagahage   +2 more
doaj   +1 more source

Soil moisture estimation using a multi-angular modified three component polarimetric decomposition [PDF]

open access: yes, 2009
In this paper a modified three component polarimetric decomposition incorporating multi-angular acquisitions is developed to estimate soil moisture under vegetation cover over agricultural areas.
Konstantinos P. Papathanassiou   +8 more
core   +1 more source

Evaluation of Soil Moisture Retrieval from the ERS and Metop Scatterometers in the Lower Mekong Basin [PDF]

open access: yes, 2013
The natural environment and livelihoods in the Lower Mekong Basin (LMB) are significantly affected by the annual hydrological cycle. Monitoring of soil moisture as a key variable in the hydrological cycle is of great interest in a number of Hydrological ...
Vahid Naeimi   +13 more
core   +1 more source

A Semi-Physical Approach for Downscaling Satellite Soil Moisture Data in a Typical Cold Alpine Area, Northwest China

open access: yesRemote Sensing, 2021
Microwave remote sensing techniques provide a direct measurement of surface soil moisture (SM), with advantages for all-weather observations and solid physics. However, most satellite microwave soil moisture products fail to meet the requirements of land
Zetao Cao   +4 more
doaj   +1 more source

Technical Note: Evaluation of the skill in monthly-to-seasonal soil moisture forecasting based on SMAP satellite observations over the southeastern US [PDF]

open access: yesHydrology and Earth System Sciences, 2020
Providing accurate soil moisture (SM) conditions is a critical step in model initialization in weather forecasting, agricultural planning, and water resources management.
A. Mazrooei   +2 more
doaj   +1 more source

A Dual-Source Energy Balance Model Coupled with Jarvis Canopy Resistance for Estimating Surface Evapotranspiration in Arid and Semi-Arid Regions

open access: yesAgriculture
Soil moisture is one of the main factors influencing evapotranspiration (ET) under soil water stress conditions. The TSEBSM model used soil moisture to constrain soil evaporation.
Qiutong Zhang   +6 more
doaj   +1 more source

Evaluation of Satellite and Reanalysis Soil Moisture Products over Southwest China Using Ground-Based Measurements

open access: yesRemote Sensing, 2015
Long-term global satellite and reanalysis soil moisture products have been available for several years. In this study, in situ soil moisture measurements from 2008 to 2012 over Southwest China are used to evaluate the accuracy of four satellite-based ...
Jian Peng   +4 more
doaj   +1 more source

Three-dimensional hydrological thresholds to predict shallow landslides

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2023
Past studies have focused on the importance of hydrological variables in analyzing landslide initiation condition. Even though precipitation is the main driver of shallow landslides and debris flows, use of only rainfall-based parameters has shown some ...
Seulchan Lee   +4 more
doaj   +1 more source

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