Results 91 to 100 of about 4,460 (223)

Assessment of Version 4 of the SMAP Passive Soil Moisture Standard Product [PDF]

NASAs Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days.
Asanuma, J., Berg, A., Bindlish, R., Bosch, D., Caldwell, T., Calvet, J-C., Chan, S., Chen, F., Colliander, A., Cosh, M., Crow, W., Dunbar, R., Entekhabi, D., González-Zamora, A., Holifield, C., Jackson, T., Kerr, Y., Lopez-Baeza, E., Martínez-Fernández, J., McNairn, H., O'neill, P. O., Pacheco, A., Palecki, M., Piepmeier, Jeffrey R., Prueger, J., Rowlandson, T., Seyfried, M., Small, E., Starks, P., Su, Z., Thibeault, M., Udall, F., Van der Velde, R., Walker, J., Wu, X., Yueh, S., Zreda, M.   +36 more
core   +2 more sources

Simultaenous Retrieval of Surface Roughness Parameters from Combined Active-Passive SMAP Observations [PDF]

, 2019
Soil roughness strongly influences processes like erosion, infiltration, moisture and evaporation of soils as well as growth of agricultural plants.
Akbar, Ruzbeh, Entekhabi, Dara, Fluhrer, Anke, Jagdhuber, Thomas, O'Neill, Peggy   +4 more
core   +2 more sources

The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau

Remote Sensing, 2018
The Soil Moisture Active Passive (SMAP) mission was designed to provide a global mapping of soil moisture (SM) measured by L-band passive and active microwave sensors.
Chengwei Li, Hui Lu, Kun Yang, Menglei Han, Jonathon S. Wright, Yingying Chen, Le Yu, Shiming Xu, Xiaomeng Huang, Wei Gong   +9 more
doaj   +1 more source

Empirical fitting of forward backscattering models for multitemporal retrieval of soil moisture from radar data at L-band [PDF]

, 2017
A multitemporal algorithm, originally conceived for the C-band radar aboard the Sentinel-1 satellite, has been updated to retrieve soil moisture from L-band radar data, such as those provided by the National Aeronautics and Space Administration Soil ...
Fascetti, Fabio, Pierdicca, Nazzareno, Pulvirenti, Luca   +2 more
core   +2 more sources

Integrated SMAP and SMOS Soil Moisture Observations [PDF]

Soil Moisture Active Passive (SMAP) mission and the Soil Moisture and Ocean Salinity (SMOS) missions provide brightness temperature and soil moisture estimates every 2-3 days.
Bindlish, Rajat, Chan, Steven, Colliander, Andreas, Jackson, Thomas J., Kerr, Yann   +4 more
core   +1 more source

NASA Soil Moisture Active Passive Mission Status and Science Highlights [PDF]

, 2017
The Soil Moisture Active Passive (SMAP) observatory was launched January 31, 2015, and its L-band radiometer and radar instruments became operational during April 2015. This paper provides a summary of the quality assessment of its baseline soil moisture
Entekhabi, Dara, Entin, Jared, O'Neill, Peggy, Yueh, Simon   +3 more
core   +2 more sources

Polarization Decomposition and Temperature Bias Resolution for SMAP Passive Soil Moisture Retrieval Using Time Series Brightness Temperature Observations [PDF]

In passive microwave remote sensing of soil moisture, the tau-omega (-) model has often been used to provide soil moisture estimates at a spatial scale representative of the satellite footprint dimensions.
Bindlish, Rajat, Chan, Steven, Colliander, Andreas, Jackson, Thomas, O'Neill, Peggy, Yueh, Simon   +5 more
core   +2 more sources

Comprehensive Analysis of CYGNSS GNSS-R Data for Enhanced Soil Moisture Retrieval

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Soil moisture, an essential climate variable, is traditionally retrieved on large scales using passive or active microwave sensors, with temporal resolution of 2–3 days and no less than 6 days, respectively.
Paulo Setti, Sajad Tabibi
doaj   +1 more source

NIR-Red Spectra-Based Disaggregation of SMAP Soil Moisture to 250 m Resolution Based on SMAPEx-4/5 in Southeastern Australia

Remote Sensing, 2017
To meet the demand of regional hydrological and agricultural applications, a new method named near infrared-red (NIR-red) spectra-based disaggregation (NRSD) was proposed to perform a disaggregation of Soil Moisture Active Passive (SMAP) products from 36
Nengcheng Chen, Yuqi He, Xiang Zhang
doaj   +1 more source

Integration of SMAP and SMOS Observations [PDF]

Soil Moisture Active Passive (SMAP) mission and the Soil Moisture and Ocean Salinity (SMOS) missions provide brightness temperature and soil moisture estimates every 2-3 days.
Bindlish, Rajat, Chan, Steven, Colliander, Andreas, Jackson, Thomas J., Kerr, Yann   +4 more
core   +1 more source