Results 11 to 20 of about 4,460 (223)

The NASA Soil Moisture Active Passive (SMAP) mission formulation [PDF]

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
The Soil Moisture Active Passive (SMAP) mission is one of the first-tier projects recommended by the U.S. National Research Council Committee on Earth Science and Applications from Space. The SMAP mission is in formulation phase and it is scheduled for launch in 2014.
Dara Entekhabi, Eni Njoku, Peggy O'Neill, Kent Kellogg, Jared Entin   +4 more
openaire   +1 more source

Investigating the Potential of Downscaling Approaches for SMAP Radiometer Soil Moisture in Agroforestry Areas, China

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Accurate high-spatial-resolution soil moisture content (SMC) datasets are crucial for applications, such as erosion modelling, flood forecasting, and agricultural production.
Huizhen Cui, Lingmei Jiang, Menxin Wu, Jian Wang, Fangbo Pan, Wanjin Liao   +5 more
doaj   +1 more source

DOWNSCALING OF SMAP SOIL MOISTURE PRODUCT BY DATA FUSION WITH VIIRS LST/EVI PRODUCT [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Soil moisture is an essential variable of environment and climate change, which affects the energy and water exchange between soil and atmosphere. The estimation of soil moisture is thus very important in geoscience, while at same time also challenging ...
X. Lei, Y. Wang, T. Guo
doaj   +1 more source

The NASA Soil Moisture Active Passive (SMAP) mission: Overview [PDF]

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey [1]. Its mission design consists of L-band radiometer and radar instruments sharing a rotating 6-m mesh reflector antenna to provide high-resolution and high-accuracy ...
O'Neill, Peggy E., Entekhabi, Dara, Njoku, Eni G., Kellogg, Kent H.   +3 more
openaire   +2 more sources

Joint Sentinel-1 and SMAP data assimilation to improve soil moisture estimates [PDF]

, 2017
SMAP (Soil Moisture Active and Passive) radiometer observations at similar to 40 km resolution are routinely assimilated into the NASA Catchment Land Surface Model to generate the 9 km SMAP Level-4 Soil Moisture product.
Albergel, Attema, Bartalis, Bell, Bircher, Cappelaere, Chan, Colliander, Dawdy, De Lannoy, De Lannoy, De Lannoy, De Lannoy, De Lannoy, Diamond, Dorigo, Draper, Entekhabi, Fung, G. J. M. De Lannoy, Geudtner, H. Lievens, J. P. Walker, Kerr, Koster, Lebel, Lievens, Liu, M. Cosh, McPherson, N. N. Das, Pellarin, Q. Liu, R. H. Reichle, R. S. Dunbar, S. B. Kim, Schaefer, Smith, Su, Tuanmu, Velde, W. Wagner, Wood   +42 more
core   +5 more sources

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   +2 more sources

Controls on surface soil drying rates observed by SMAP and simulated by the Noah land surface model [PDF]

Hydrology and Earth System Sciences, 2018
Drydown periods that follow precipitation events provide an opportunity to assess controls on soil evaporation on a continental scale. We use SMAP (Soil Moisture Active Passive) observations and Noah simulations from drydown periods to quantify the ...
P. J. Shellito, E. E. Small, B. Livneh
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

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

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