Results 91 to 100 of about 5,604,864 (173)

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

Retrieving landscape freeze/thaw state fromSoil Moisture Active Passive (SMAP) radar and radiometer measurements [PDF]

, 2017
Over one-third of the global land area undergoes a seasonal transition between predominantly frozen and non-frozen conditions each year, with the land surface freeze/thaw (FT) state a significant control on hydrological and biospheric processes over ...
Xiaolan Xu, Alexandre Roy, Jilmarie Stephens, Roy, Alexandre, Loranty, Michael M., Philip Marsh, John S. Kimball, Alexandre Langlois, Chris Derksen, Rautiainen, Kimmo, Stephens, Jilmarie, Black, T. Andrew, Kimball, John S, T. Andrew Black, Royer, Alain, Eugenie Euskirchen, Euskirchen, E., Michael M. Loranty, Langlois, Alexandre, Marsh, Philip, Dunbar, R. Scott, Alain Royer, Kimmo Rautiainen, Andreas Colliander, Youngwook Kim, Derksen, C., Xu, Xiaolan, Colliander, Andreas, Kim, Youngwook, R. Scott Dunbar   +29 more
core   +1 more source

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

Evaluating New SMAP Soil Moisture for Drought Monitoring in the Rangelands of the US High Plains

, 2016
• Level 3 soil moisture datasets from the recently launched Soil Moisture Active Passive (SMAP) satellite are evaluated for drought monitoring in rangelands.• Validation of SMAP soil moisture (SSM) with in situ and modeled estimates showed high level of ...
Morisette, Jeffrey T., Velpuri, Naga Manohar, Senay, Gabriel B.   +2 more
core  

A seamless global daily soil moisture dataset (2010–2015) harmonized from SMOS observations and SMAP-era assimilation modeling

International Journal of Digital Earth
The consecutive Soil Moisture and Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) satellite missions have enhanced global L-band soil moisture monitoring.
Xiaoyi Wang, Haishen Lü, Sidong Zeng, Gerald A Corzo Perez, Qiqi Gou, Linhan Yang, Yongyue Ji, Yiling Yao, Jianbin Su   +8 more
doaj   +1 more source

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

, 2017
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.
Zreda, M., Rowlandson, T., Palecki, E., Calvet, J.C., Bosch, David, Walker, Jeffrey, Prueger, J.H., Chaubell, J., Uldall, F., Piepmeijer, J., Martinez-Fernandez, J., van der Velde, R., Kerr, Y.H., Dunbar, A., Cosh, M., Pacheco, T., Starks, P.J., Asanuma, J., Caldwell, T., Bindlish, R., McNairn, H., Entekhabi, D., Thibeault, M., Holifield Collins, Chandra D., Wu, X., Berg, A., Colliander, A., O'Neill, Peggy, Crow, C., Su, Z.; id_orcid, Chen, F., Lopez-Beaza, E., Small, E., Seyfried, M., Jackson, T., Yeuh, S., Chan, S., Gonzalez-Zamora, A.   +37 more
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Extracting hydrologic information from the Soil Moisture Active Passive (SMAP) satellite data for improved hydrologic modeling [PDF]

, 2018
Thesis (Ph.D.)--University of Washington, 2018Soil moisture is a key component of the water cycle. The launch of the new-generation satellite mission, the NASA Soil Moisture Active/Passive (SMAP) mission, in 2015 opens up unprecedented opportunities for ...
Mao, Yixin
core  

NASA Soil Moisture Active Passive (SMAP) Mission Formulation [PDF]

, 2011
The Soil Moisture Active Passive (SMAP) Mission is one of the first Earth observation satellites being formulated by NASA in response to the 2007 National Research Council s Earth Science Decadal Survey [1].
ONeill, Peggy, Entin, Jared, Njoku, Eni, Kellogg, Kent, Entekhabi, Dara   +4 more
core  

The SMAP and Copernicus Sentinel 1A/B Microwave Active-Passive High Resolution Surface Soil Moisture Product and its Applications [PDF]

, 2019
SMAP project released a new enhanced high-resolution (3km and 1 km) soil moisture active-passive product. This product is obtained by combining the SMAP radiometer data and the Sentinel-1A and -1B Synthetic Aperture Radar (SAR) data.
O'neill, P. E., Jagdhuber, Thomas, O'Neill, Peggy, Dunbar, Scott, Entekhabi, Dara, Chaubell, Mario, Colliander, Andreas, Das, Narendra N., Yueh, Simon   +8 more
core  

Multi-temporal catchment and wetland scale soil moisture and vegetation analysis in Shashe, Tugwi and Zibagwe sub-catchments of Zimbabwe

Geocarto International
We utilized Sentinel-1 Synthetic Aperture Radar (SAR) surface soil moisture, Sentinel-2 L1C-derived Enhanced Vegetation Index (EVI), and Soil Moisture Active Passive (SMAP) surface and root zone soil moisture data to assess soil moisture dynamics and ...
Oshneck Mupepi, Thomas Marambanyika, Mark Makomborero Matsa, Timothy Dube   +3 more
doaj   +1 more source