Results 111 to 120 of about 1,430 (223)

High temporal resolution quasi-global landscape soil freeze–thaw map from spaceborne GNSS-R technology and SMAP radiometer measurements

International Journal of Applied Earth Observations and Geoinformation
Landscape freeze–thaw (F/T) state parameters are an integral part of research on terrestrial hydrological processes, vegetation growth dynamics, and terrestrial–atmospheric trace gas exchange.
Wentao Yang, Fei Guo, Xiaohong Zhang, Zhiyu Zhang, Yifan Zhu   +4 more
doaj   +1 more source

Microwave Specular Measurements and Ocean Surface Wave Properties. [PDF]

Sensors (Basel), 2021
Hwang PA, Ainsworth TL, Ouellette JD.
europepmc   +1 more source

CYGNSS Mission Overview and Preflight Update

, 2016
The Cyclone Global Navigation Satellite System (CYGNSS) project, NASA's first Earth Venture Mission, is on schedule to launch in late-2016. CYGNSS will implement a spaceborne earth observation system designed to collect measurements of ocean surface winds through measurements of variations in the direct vs.
Rose, Randall, Scherrer, John, Rose, Debra, Ruf, Christopher, Wells, James, Bonniksen, Christine   +5 more
openaire   +1 more source

Reservoir Water Level Monitoring Using CYGNSS's Level-1 Observations

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The use of measurements from NASA's CYGNSS mission for the mapping of inland water bodies has been extensively demonstrated in past works. Despite this progress, the use of CYGNSS measurements for monitoring dynamic properties of water bodies ...
Nicholas J. Brendle, Steven K. Chan, George Hajj, Mohammad M. Al-Khaldi, Joel T. Johnson   +4 more
doaj   +1 more source

High-resolution observations from space to address new applications in hydrology. [PDF]

Innovation (Camb), 2023
Brocca L, Zhao W, Lu H.
europepmc   +1 more source

Class D Management Implementation Approach of the First Orbital Mission of the Earth Venture Series [PDF]

A key element of the National Research Council's Earth Science and Applications Decadal Survey called for the creation of the Venture Class line of low-cost research and application missions within NASA (National Aeronautics and Space Administration ...
Bonniksen, Chris, Law, Richard, Scherrer, John, Wells, James E.   +3 more
core   +1 more source

Daily 9-km Soil Moisture Retrieval With Reconstructed GNSS-R Observations

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne global navigation satellite system-reflectometry (GNSS-R) observations are effective for extensive monitoring of soil moisture (SM). Reliance on gridded data from other remote-sensing systems is the general way of GNSS-R SM retrieval ...
Wentao Yang, Fei Guo, Xiaohong Zhang, Zhiyu Zhang, Yifan Zhu, Zheng Li, Dengkui Mei   +6 more
doaj   +1 more source

Unexpected limitation of tropical cyclone genesis by subsurface tropical central-north Pacific during El Niño. [PDF]

Nat Commun, 2022
Gao C, Zhou L, Wang C, Lin II, Murtugudde R.   +4 more
europepmc   +1 more source

Analysis of 9 km quasi-global microwave land surface emissivity estimates derived from SMAP radiometer and CYGNSS reflectometer

Geo-spatial Information Science
Accurate estimation and high-resolution mapping of land surface emissivity are crucial for enhancing understanding of Earth system processes and facilitating informed decision-making across various fields.
Yifan Zhu, Fei Guo, Wentao Yang, Zhiyu Zhang, Zheng Li, Ziheng Wu, Xiaohong Zhang   +6 more
doaj   +1 more source

Multi-Source Soil Moisture Data Fusion Based on Spherical Cap Harmonic Analysis and Helmert Variance Component Estimation in the Western U.S. [PDF]

Sensors (Basel), 2023
Chen H, Chen P, Wang R, Qiu L, Tang F, Xiong M.   +5 more
europepmc   +1 more source