Results 21 to 30 of about 6,600 (253)

Soil Moisture Mapping with Moisture-Related Indices, OPTRAM, and an Integrated Random Forest-OPTRAM Algorithm from Landsat 8 Images

open access: yesRemote Sensing, 2022
Remote sensing tools have been extensively used for large-scale soil moisture (SM) mapping in recent years, using Landsat satellite images. Rainfall, soil clay percentage, and the standardized precipitation index play key roles in determining the ...
Umesh Acharya   +2 more
doaj   +1 more source

Global Surface Soil Moisture Dynamics in 1979–2016 Observed from ESA CCI SM Dataset [PDF]

open access: yesWater, 2019
Soil moisture (SM) is an important variable for the terrestrial surface system, as its changes greatly affect the global water and energy cycle. The description and understanding of spatiotemporal changes in global soil moisture require long time-series observation.
Ning Pan   +4 more
openaire   +1 more source

Evaluation of Multi-Source Soil Moisture Datasets over Central and Eastern Agricultural Area of China Using In Situ Monitoring Network

open access: yesRemote Sensing, 2021
Multi-source soil moisture (SM) products provide a vigorous tool for the estimation of soil moisture on a large scale, but it is crucial to carry out the evaluation of those products before further application.
Yanqing Yang   +6 more
doaj   +1 more source

A distributed measurement method for in-situ soil moisture content by using carbon-fiber heated cable

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2015
Moisture content is a fundamental physical index that quantifies soil property and is closely associated with the hydrological, ecological and engineering behaviors of soil.
Dingfeng Cao   +5 more
doaj   +1 more source

Effect of surface temperature on soil moisture retrieval using CYGNSS

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
In this paper, a soil moisture (SM) retrieval model from spaceborne Global Navigation Satellite System Reflectometry (GNSS-R) observations that incorporates soil surface temperature (SST) for the first time is evaluated.
Yifan Zhu, Fei Guo, Xiaohong Zhang
doaj   +1 more source

A Spatial Downscaling Method for Remote Sensing Soil Moisture Based on Random Forest Considering Soil Moisture Memory and Mass Conservation

open access: yesRemote Sensing, 2022
Remote sensing soil moisture (SM) has been widely used in various earth science studies and applications, but their low resolution limits their usage and downscaling of them is needed.
Taoning Mao   +8 more
doaj   +1 more source

Very High Spatial Resolution Downscaled SMAP Radiometer Soil Moisture in the CONUS Using VIIRS/MODIS Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Satellite remote sensing has been providing passive microwave soil moisture (SM) retrievals of a global spatial coverage and a high revisit frequency for research and applications in earth and environmental sciences, specifically after the soil moisture ...
Bin Fang   +3 more
doaj   +1 more source

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

Estimation of subsurface soil moisture from surface soil moisture in cold mountainous areas [PDF]

open access: yesHydrology and Earth System Sciences, 2020
Profile soil moisture (SM) in mountainous areas is important for water resource management and ecohydrological studies of downstream arid watersheds. Satellite products are useful for providing spatially distributed SM information but only have limited ...
J. Tian   +8 more
doaj   +1 more source

Soil moisture data using citizen science technology cross-validated by satellite data

open access: yesJournal of Hydroinformatics, 2021
Soil moisture represents many attributes of the geo-hydrological cycle and the climate system. Citizen science through social media as an emerging tool could be utilized to collect soil moisture data. A pilot study area was selected in Shahriar, Iran.
Mohammad Karamouz   +2 more
doaj   +1 more source

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