Results 21 to 30 of about 2,782 (177)
An Approach for Downscaling SMAP Soil Moisture by Combining Sentinel-1 SAR and MODIS Data
Remote Sensing, 2019 A method is proposed for the production of downscaled soil moisture active passive (SMAP) soil moisture (SM) data by combining optical/infrared data with synthetic aperture radar (SAR) data based on the random forest (RF) model.
Jueying Bai +3 more
doaj +1 more source
Synthetic Aperture Radar (SAR) Compact Polarimetry for Soil Moisture Retrieval
Remote Sensing, 2019 Soil moisture is a factor for risk analysis in the agricultural sector, yet access to temporally and spatially detailed data is challenging for much of the world’s agricultural extend. Significant effort has been focused on developing methodologies
Amine Merzouki +3 more
doaj +1 more source
Performance of SMAP and SMOS Salinity Products under Tropical Cyclones in the Bay of Bengal
Remote Sensing, 2022 To compare the accuracy of satellite salinity data of level-3 Soil Moisture Active Passive V4.0 (SSMAP) and debiased v5 CATDS level-3 Soil Moisture and Ocean Salinity (SSMOS) before and after tropical cyclones (TCs) in the Bay of Bengal (BoB), this study
Huabing Xu, Yucai Shan, Guangjun Xu
doaj +1 more source
International Journal of Digital Earth, 2019 The near-surface soil freeze–thaw (FT) transition is an important factor affecting land-atmosphere exchanges, hydrology and carbon cycles. Thus, effectively monitoring the temporal–spatial changes of soil FT processes is crucial to climate change and ...
Pingkai Wang +6 more
doaj +1 more source
Seasonal Evaluation of SMAP Soil Moisture in the U.S. Corn Belt
Remote Sensing, 2019 NASA’s Soil Moisture Active Passive (SMAP) Level 2 soil moisture products are not meeting mission goals in the U.S. Corn Belt according to our seasonal evaluation conducted at a SMAP Core Validation Site in central Iowa.
Victoria A. Walker +3 more
doaj +1 more source
Journal of Hydrology: Regional Studies, 2022 Soil moisture (SM) is an indispensable variable in drought monitoring and weather forecast. L-band is found to be the most suitable band for retrieving surface SM.
Fengmin Hu +9 more
doaj +1 more source
SMAP Salinity Retrievals near the Sea-Ice Edge Using Multi-Channel AMSR2 Brightness Temperatures
Remote Sensing, 2021 Sea-ice contamination in the antenna field of view constitutes a large error source in retrieving sea-surface salinity (SSS) with the spaceborne Soil Moisture Active Passive (SMAP) L-band radiometer.
Thomas Meissner, Andrew Manaster
doaj +1 more source
First Evaluation of Topography on GNSS-R: An Empirical Study Based on a Digital Elevation Model
Remote Sensing, 2019 Understanding the effects of Earth’s surface topography on Global Navigation Satellite Systems Reflectometry (GNSS-R) space-borne data is important to calibrate experimental measurements, so as to provide accurate soil moisture content (SMC ...
Hugo Carreno-Luengo +2 more
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Controls on surface soil drying rates observed by SMAP and simulated by the Noah land surface model [PDF]
Hydrology and Earth System Sciences, 2018 Drydown periods that follow precipitation events provide an opportunity to assess controls on soil evaporation on a continental scale. We use SMAP (Soil Moisture Active Passive) observations and Noah simulations from drydown periods to quantify the ...
P. J. Shellito, E. E. Small, B. Livneh
doaj +1 more source
Membranes, 2022 Copoly(o-hydroxyamide)s (HPA) and copoly(o-hydroxyamide-amide)s (PAA) have been synthesized to be used as continuous phases in mixed matrix membranes (MMMs).
Cenit Soto +8 more
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