Results 101 to 110 of about 1,044 (196)

Updates to the CYGNSS Ocean Surface Heat Flux Product

Remote Sensing
The initial development of the Cyclone Global Navigation Satellite System (CYGNSS) Ocean Surface Heat Flux Product, shortly after the satellite mission began, quickly became a valuable tool for analyzing and monitoring latent and sensible heat fluxes ...
Juan A. Crespo, Shakeel Asharaf, Anthony Russel, Dorina Twigg, Derek J. Posselt   +4 more
doaj   +1 more source

Characterization of CYGNSS Ocean Surface Wind Speed Products

Remote Sensing
Since its launch in 2016, a number of wind speed retrieval algorithms have been developed for the NASA CYGNSS satellite observations. We assess their accuracy and precision and characterize the dependence of their performance on environmental factors. The dependence of retrieval uncertainty on the wind speed itself is considered.
Christopher Ruf, Mohammad M. Al-Khaldi, Shakeel Asharaf, Rajeswari Balasubramaniam, Darren McKague, Daniel Pascual, Anthony Russel, Dorina Twigg, April M. Warnock   +8 more
openaire   +3 more sources

Feasibility Study on Qinghai Lake Boundary Detection Using CYGNSS Raw IF Data

Qinghai Lake, the largest inland saltwater lake in China, is an important water body that maintains the ecological security of the northeastern Tibetan Plateau.
Ziyu Yan, Wanting Meng, Shuhu Yang, Yanling Han, Zhonghua Hong, Yun Zhang   +5 more
core   +1 more source

Berkeley‐RWAWC: A New CYGNSS‐Based Watermask Unveils Unique Observations of Seasonal Dynamics in the Tropics

Water Resources Research
The UC Berkeley Random Walk Algorithm WaterMask from CYGNSS (Berkeley‐RWAWC) is a new data product designed to address the challenges of monitoring inundation in regions hindered by dense vegetation and cloud cover as is the case in most of the Tropics ...
Tianjiao Pu, Cynthia Gerlein‐Safdi, Ying Xiong, Mengze Li, Eric A. Kort, A. Anthony Bloom   +5 more
doaj   +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

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

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

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

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

CYGNSS: Lessons We are Learning from a Class D Mission [PDF]

, 2015
CYGNSS: Lessons Learned from NASA Class D Mission and how they selected their parts for the program to include balance between cost, risk, schedule and technology available as well as balancing cost restraints with mission risk ...
Tumlinson, Jessica
core