Results 31 to 40 of about 946 (177)

Validation of the Soil Moisture Active Passive (SMAP) satellite soil moisture retrieval in an Arctic tundra environment [PDF]

Geophysical Research Letters, 2017
AbstractThis study examines the Soil Moisture Active Passive soil moisture product on the Equal Area Scalable Earth‐2 (EASE‐2) 36 km Global cylindrical and North Polar azimuthal grids relative to two in situ soil moisture monitoring networks that were installed in 2015 and 2016.
Elizabeth Wrona, Tracy L. Rowlandson, Manoj Nambiar, Aaron A. Berg, Andreas Colliander, Philip Marsh   +5 more
openaire   +1 more source

Global downscaling of remotely sensed soil moisture using neural networks [PDF]

Hydrology and Earth System Sciences, 2018
Characterizing soil moisture at spatiotemporal scales relevant to land surface processes (i.e., of the order of 1 km) is necessary in order to quantify its role in regional feedbacks between the land surface and the atmospheric boundary layer ...
S. H. Alemohammad, S. H. Alemohammad, S. H. Alemohammad, J. Kolassa, J. Kolassa, C. Prigent, C. Prigent, C. Prigent, F. Aires, F. Aires, F. Aires, P. Gentine, P. Gentine, P. Gentine   +13 more
doaj   +1 more source

Resolution Enhancement of SMAP Passive Soil Moisture Estimates

Remote Sensing, 2022
The Soil Moisture Active Passive (SMAP) mission includes a unique combination of instruments intended to provide daily global soil moisture data with high accuracy and resolution.
Jordan P. Brown, David G. Long
doaj   +1 more source

Radio-frequency interference (RFI) mitigation for the soil moisture active/passive (SMAP) radiometer [PDF]

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
The presence of anthropogenic RFI is expected to adversely impact soil moisture measurement by NASA's Soil Moisture Active Passive mission. The digital signal processing approach and preliminary design for detecting and mitigating this RFI is presented in this paper. This approach is largely based upon the work of Johnson [1] and Ruf [2].
Damon Bradley, Cliff Brambora, Mark Englin Wong, Lynn Miles, David Durachka, Brian Farmer, Priscilla N. Mohammed, Jeffrey Piepmeier, Jim Medeiros, Neil Martin, Rafael García   +10 more
openaire   +1 more source

SMAP soil moisture drying more rapid than observed in situ following rainfall events

Geophysical Research Letters, 2016
We examine soil drying rates by comparing surface soil moisture observations from the NASA Soil Moisture Active Passive (SMAP) mission to those from networks of in situ probes upscaled to SMAP's sensing footprint.
Peter J. Shellito, Eric E. Small, Andreas Colliander, Rajat Bindlish, Michael H. Cosh, Aaron A. Berg, David D. Bosch, Todd G. Caldwell, David C. Goodrich, Heather McNairn, John H. Prueger, Patrick J. Starks, Rogier van derVelde, Jeffrey P. Walker   +13 more
doaj   +1 more source

Assessment of SMAP and SMOS soil moisture products using triple collocation method over Inner Mongolia

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, Zushuai Wei, Xining Yang, Wenjun Xie, Yuanxi Li, Changlu Cui, Beibei Yang, Chongxin Tao, Wen Zhang, Lingkui Meng   +9 more
doaj   +1 more source

Assessing SMAP Soil Moisture Scaling and Retrieval in the Carman (Canada) Study Site

Vadose Zone Journal, 2018
In 2015, NASA launched the Soil Moisture Active Passive (SMAP) satellite. Data from this satellite are being exploited to improve forecasting of extreme weather events and delivery of disaster response.
Hassan A.K.M. Bhuiyan, Heather McNairn, Jarrett Powers, Matthew Friesen, Anna Pacheco, Thomas J. Jackson, Michael H. Cosh, Andreas Colliander, Aaron Berg, Tracy Rowlandson, Paul Bullock, Ramata Magagi   +11 more
doaj   +1 more source

Exploring the utility of the downscaled SMAP soil moisture products in improving streamflow simulation

Journal of Hydrology: Regional Studies, 2023
Study region: The Susquehanna and upper Susquehanna watersheds in the Northeastern of the United States of America (USA) Study focus: This study explored the utility of the Soil Moisture Active Passive (SMAP) soil moisture downscaled to a range of ...
Shimelis Asfaw Wakigari, Robert Leconte
doaj   +1 more source

Spatially Interpolated CYGNSS Data Improve Downscaled 3 km SMAP/CYGNSS Soil Moisture

Remote Sensing
Soil 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, Clara C. Chew, Eric E. Small   +2 more
doaj   +1 more source

Evaluation of SMOS, SMAP, AMSR2 and FY-3C soil moisture products over China.

PLoS ONE, 2022
Microwave remote sensing can provide long-term near-surface soil moisture data on regional and global scales. Conducting standardized authenticity tests is critical to the effective use of observed data products in models, data assimilation, and various ...
Jiazhi Fan, Man Luo, Qinzhe Han, Fulai Liu, Wanhua Huang, Shiqi Tan   +5 more
doaj   +1 more source