Results 11 to 20 of about 19,071 (245)
Assessing the Potential of Combined SMAP and In-Situ Soil Moisture for Improving Streamflow Forecast
Hydrology, 2023 Soil moisture is an essential hydrological variable for a suite of hydrological applications. Its spatio-temporal variability can be estimated using satellite remote sensing (e.g., SMOS and SMAP) and in-situ measurements.
Shimelis Asfaw Wakigari, Robert Leconte
doaj +2 more sources
Evaluation of SMAP Freeze/Thaw Retrieval Accuracy at Core Validation Sites in the Contiguous United States [PDF]
Remote Sensing, 2018 Seasonal freeze-thaw (FT) impacts much of the northern hemisphere and is an important control on its water, energy, and carbon cycle. Although FT in natural environments extends south of 45°N, FT studies using the L-band have so far been restricted ...
Simon Kraatz +7 more
doaj +3 more sources
Spatially Interpolated CYGNSS Data Improve Downscaled 3 km SMAP/CYGNSS Soil Moisture
Remote SensingSoil moisture data with both a fine spatial scale and a short global repeat period would benefit many hydrologic and climatic applications. Since the radar transmitter malfunctioned on NASA’s Soil Moisture Active Passive (SMAP) in 2015, SMAP soil ...
Liza J. Wernicke +2 more
doaj +2 more sources
Scientific Reports, 2023 The Soil Moisture Active Passive (SMAP) mission has dramatically benefited our knowledge of the Earth’s surface processes. The SMAP mission was initially designed to provide complementary L-band measurements from a radiometer and a radar, producing ...
Nereida Rodriguez-Alvarez +5 more
doaj +2 more sources
SensorsNASA’s Soil Moisture Active Passive (SMAP) was originally designed to combine high-resolution active (radar) and coarse-resolution but highly sensitive passive (radiometer) L-band observations to achieve unprecedented spatial resolution and accuracy for ...
Saeed Arab, Greg Easson, Zahra Ghaffari
doaj +2 more sources
Seasonal-scale intercomparison of SMAP and fused SMOS-SMAP soil moisture products
Frontiers in Remote SensingTwo L-band passive microwave satellite sensors, onboard the Soil Moisture and Ocean Salinity (SMOS) launched in 2009 and Soil Moisture Active Passive (SMAP) launched in 2015, are specifically designed for surface soil moisture (SM) monitoring. The first global continuous fused L-band satellite SM product based on SMOS and SMAP observations (SMOS-SMAP ...
Zanpin Xing +13 more
openaire +5 more sources
Remote Sensing, 2023 High-resolution soil moisture (SM) information is essential for regional to global hydrological and agricultural applications. The Soil Moisture Active Passive (SMAP) offers daily global composites of SM at coarse-resolution 9 and 36 km, with data gaps ...
Adeel Ahmad Nadeem +7 more
semanticscholar +1 more source
Validation of Soil Moisture Data Products From the NASA SMAP Mission
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 The National Aeronautics and Space Administration Soil Moisture Active Passive (SMAP) mission has been validating its soil moisture (SM) products since the start of data production on March 31, 2015. Prior to launch, the mission defined a set of criteria
A. Colliander +47 more
semanticscholar +1 more source
Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks, 2010 We present the architecture, specification, and implementations of a simple monitoring and action profile (sMAP), optimized for sensors, meters, and actuators in building environments. Our architecture is built on HTTP/REST and uses JSON as the object format for interoperability.
Xiaofan Jiang +2 more
openaire +3 more sources
Estimating Gravimetric Water Content of a Winter Wheat Field from L-Band Vegetation Optical Depth
Remote Sensing, 2019 A considerable amount of water is stored in vegetation, especially in regions with high precipitation rates. Knowledge of the vegetation water status is essential to monitor changes in ecosystem health and to assess the vegetation influence on the water ...
Thomas Meyer +6 more
doaj +1 more source