Results 21 to 30 of about 1,110 (203)

Evapotranspiration Everywhere, All the Time: Towards a Unified View From Earth Observation. [PDF]

open access: yesGlob Chang Biol
This paper discusses the evolution and revolution of Earth observation for evapotranspiration (ET), as we advanced from the first Landsat satellite and development of ET models through the progression of increasingly higher resolution across international space agencies and commercial industry with increasing ET model sophistication, cloud computing ...
Fisher JB   +6 more
europepmc   +2 more sources

Validation of SMOS, SMAP, and ESA CCI Soil Moisture Over a Humid Region

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
With recent advances in satellite microwave soil moisture estimation, there is a demand for up-to-date validation of satellite soil moisture products. This article presents a sparse network validation over a humid region within the Laurentian Great Lakes
Xiaoyong Xu, Steven Frey
doaj   +1 more source

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

open access: yes2011 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   +4 more
openaire   +1 more source

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

open access: yesIEEE 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   +5 more
doaj   +1 more source

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

open access: yesThe 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

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

open access: yesHydrology 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

A reduced latency regional gap-filling method for SMAP using random forest regression

open access: yesiScience, 2023
Summary: The soil moisture active/passive (SMAP) mission represents a significant advance in measuring soil moisture from satellites. However, its large spatial-temporal data gaps limit the use of its values in near-real-time (NRT) applications ...
Xiaoyi Wang   +7 more
doaj   +1 more source

Prediction of Large-Scale Wildfires With the Canopy Stress Index Derived from Soil Moisture Active Passive

open access: yesIEEE 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

open access: yesVadose 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   +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

open access: yesRemote 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   +5 more
doaj   +1 more source

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