Results 21 to 30 of about 5,325,765 (204)

Temporal stability of soil moisture and radar backscatter observed by the advanced Synthetic Aperture Radar (ASAR) [PDF]

, 2008
The high spatio-temporal variability of soil moisture is the result of atmospheric forcing and redistribution processes related to terrain, soil, and vegetation characteristics.
Annett Bartsch, Doubkova, Marcela, Bartsch, Annett, Pathe, Carsten, Scipal, K., Klaus Scipal, Günter Blöschl, Bloschl, G., Martinez-Fernandez, J., Pathe, C., Wolfgang Wagner, Alexander Löw, Scipal, Klaus, Hasenauer, Stefan, Doubkova, M., Bloschl, Guenter, Bartsch, A., José Martínez-Fernández, Sabel, Daniel, Löw, Alexander, Stefan Hasenauer, Loew, A., Daniel Sabel, Marcela Doubkova, Hasenauer, S., Wagner, W., Carsten Pathe, Martinez-Fernandez, Jose, José Martínez-Fernández, Wagner, Wolfgang, Günter Blöschl, Sabel, D., Alexander Löw   +32 more
core   +1 more source

A reduced latency regional gap-filling method for SMAP using random forest regression

iScience, 2023
Summary: The soil moisture active/passive (SMAP) mission represents a significant advance in measuring soil moisture from satellites. However, its large spatial-temporal data gaps limit the use of its values in near-real-time (NRT) applications ...
Xiaoyi Wang, Haishen Lü, Wade T. Crow, Gerald Corzo, Yonghua Zhu, Jianbin Su, Jingyao Zheng, Qiqi Gou   +7 more
doaj   +1 more source

E-SMAP: Evaporation-Soil Moisture Active Passive

, 2022
This is an observationally-based dataset of soil evaporation for the conterminous U.S. (CONUS), gridded to a 9 km resolution for the time-period of April 2015-March 2019.
Abolafia-Rosenzweig, R (via Mendeley Data)
core   +1 more source

Downscaling of SMAP Soil Moisture Using Land Surface Temperature and Vegetation Data

Vadose Zone Journal, 2018
Remotely sensed soil moisture retrieved by the Soil Moisture Active and Passive (SMAP) sensor is currently provided at a 9-km grid resolution. Although valuable, some applications in weather, agriculture, ecology, and watershed hydrology require soil ...
Bin Fang, Venkataraman Lakshmi, Rajat Bindlish, Thomas J. Jackson   +3 more
doaj   +1 more source

Prediction of Large-Scale Wildfires With the Canopy Stress Index Derived from Soil Moisture Active Passive

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Land surface variables such as surface soil moisture are recognized as important wildfire indicators. However, quantifying wildfire fuel combustibility through only satellite-retrieved soil moisture remains challenging, because soil moisture does not ...
Ju Hyoung Lee
doaj   +1 more source

NASA's Soil Moisture Active Passive (SMAP) Mission and Opportunities For Applications Users [PDF]

Bulletin of the American Meteorological Society, 2013
Water in the soil, both its amount (soil moisture) and its state (freeze/thaw), plays a key role in water and energy cycles, in weather and climate, and in the carbon cycle. Additionally, soil moisture touches upon human lives in a number of ways from the ravages of flooding to the needs for monitoring agricultural and hydrologic droughts.
Brown, Molly E., Escobar, Vanessa, Moran, Susan, Entekhabi, Dara, O'Neill, Peggy E., Njoku, Eni G., Doorn, Brad, Entin, Jared K.   +7 more
openaire   +3 more sources

Agricultural Drought Monitoring via the Assimilation of SMAP Soil Moisture Retrievals Into a Global Soil Water Balance Model

Frontiers in Big Data, 2020
From an agricultural perspective, drought refers to an unusual deficiency of plant available water in the root-zone of the soil profile. This paper focuses on evaluating the benefit of assimilating soil moisture retrievals from the Soil Moisture Active ...
Iliana E. Mladenova, Iliana E. Mladenova, John D. Bolten, Wade Crow, Nazmus Sazib, Nazmus Sazib, Curt Reynolds   +6 more
doaj   +1 more source

Validation Analysis of SMAP and AMSR2 Soil Moisture Products over the United States Using Ground-Based Measurements

Remote Sensing, 2017
Soil moisture products acquired from passive satellite missions have been widely applied in environmental processes. A primary challenge for the use of soil moisture products from passive sensors is their reliability.
Xuefei Zhang, Tingting Zhang, Ping Zhou, Yun Shao, Shan Gao   +4 more
doaj   +1 more source

Effect of Assimilating SMAP Soil Moisture on CO₂ and CH₄ Fluxes through Direct Insertion in a Land Surface Model

Remote Sensing, 2022
Soil moisture impacts the biosphere–atmosphere exchange of CO2 and CH4 and plays an important role in the terrestrial carbon cycle. A better representation of soil moisture would improve coupled carbon–water dynamics in terrestrial ecosystem models and ...
Zhen Zhang, Abhishek Chatterjee, Lesley Ott, Rolf Reichle, Andrew F. Feldman, Benjamin Poulter   +5 more
doaj   +1 more source

Introducing the SMAP L4 Products and Investigating the Spatio-Temporal Variability of Soil Moisture in Iran [PDF]

Nīvār, 2022
Background and objectives: Although estimation of soil surface moisture plays an important role in soil and water resources management, unfortunately, there is currently no national soil moisture monitoring network in Iran and the distribution of in situ
Ebrahim Asadi Oskouei, Leila Godarzy, Jalil Helali   +2 more
doaj   +1 more source