Results 41 to 50 of about 4,306 (212)

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

SPATIAL DOWNSCALING OF SMAP SOIL MOISTURE USING THE MODIS AND SRTM OBSERVATIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The main objective of this study is the spatial downscaling of Soil Moisture Active Passive (SMAP) soil moisture (36 km) using the Moderate Resolution Imaging Spectroradiometer (MODIS) and Shuttle Radar Topography Mission (SRTM) products.
J. D. Mohite, S. A. Sawant, A. Pandit, S. Pappula   +3 more
doaj   +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

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

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

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

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

Tendencies of Soil Microbial NO Emissions During HI‐SCALE as Predicted by a Nitrification/Denitrification Scheme

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Many atmospheric chemical processes, including the formation of secondary organic aerosol (SOA), are strongly modulated by the reactions of NO and NO2NOx ${\text{NO}}_{2}\ \left({\text{NO}}_{x}\right)$. Though NOx ${\text{NO}}_{x}$ is controlled by anthropogenic emissions near urban areas, in rural areas soil microbes can be a significant ...
B. Gaudet, J. Fast, Q. Rasool, M. Shrivastava, S.‐L. Tai, R. Zaveri, J. Zhang   +6 more
wiley   +1 more source

Integration of Sentinel-1A Radar and SMAP Radiometer for Soil Moisture Retrieval over Vegetated Areas

Sensors
NASA’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   +1 more source

Preliminary Evaluation of the SMAP Radiometer Soil Moisture Product over China Using In Situ Data

Remote Sensing, 2017
The Soil Moisture Active Passive (SMAP) satellite makes coincident global measurements of soil moisture using an L-band radar instrument and an L-band radiometer.
Yayong Sun, Shifeng Huang, Jianwei Ma, Jiren Li, Xiaotao Li, Hui Wang, Sheng Chen, Wenbin Zang   +7 more
doaj   +1 more source