Results 61 to 70 of about 1,044 (196)

Monitoring Flood Inundation Dynamics From Space

Reviews of Geophysics, Volume 64, Issue 1, March 2026.
Abstract With the increasing intensity and frequency of flood events worldwide, the need for accurate and timely inundation mapping has never been more critical. Large‐scale flood extent estimations are vital for coordinating effective disaster response, facilitating recovery, and building future resilience.
C. Campo, P. Tamagnone, S. Choy, T. D. Tran, G. J.‐P. Schumann, Y. Kuleshov   +5 more
wiley   +1 more source

Variational wind speed retrievals of uncalibrated CyGNSS data: response to high wind

, 2021
Talk delivered in CYGNSS Science Team Meeting online, 9-11 June ...
Ribó, Serni, Rius, Antonio, Li, Weiqiang, Guo, Bofeng, Cardellach, Estel, Yang, Nan   +5 more
core  

First Evaluation of Topography on GNSS-R: An Empirical Study Based on a Digital Elevation Model

Remote Sensing, 2019
Understanding the effects of Earth’s surface topography on Global Navigation Satellite Systems Reflectometry (GNSS-R) space-borne data is important to calibrate experimental measurements, so as to provide accurate soil moisture content (SMC ...
Hugo Carreno-Luengo, Guido Luzi, Michele Crosetto   +2 more
doaj   +1 more source

Satellite‐Based Estimation of Near‐Surface Specific Humidity During Tropical Cyclones in the Western North Pacific and North Atlantic

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The near‐surface specific humidity is critical for accurately estimating the enthalpy flux from the ocean, which plays an important role in tropical cyclone intensification. However, under the severe oceanic and atmospheric conditions of these storms, even spaceborne microwave radiometers struggle to retrieve reliable humidity data.
Hiroyuki Tomita, Akiyoshi Wada
wiley   +1 more source

IMPACT OF THE ELEVATION ANGLE ON CYGNSS GNSS-R REFLECTIVITY OVER DIFFERENT SCATTERING MEDIA OVER LAND AND OCEAN

, 2018
Earth's surface bistatic reflectivity ΓLHCP,CyGNSS profiles are obtained using Global Navigation Satellite Systems Reflectometry (GNSS-R) products from NASA's Cyclone Global Navigation Satellite Systems (CyGNSS).
Luzi, Guido, Guido Luzi, Carreño-Luengo, Hugo, Hugo Carreno-Luengo, Michele Crosetto, Crosetto, Michele   +5 more
core   +1 more source

Sahara Subsurface Characterization Using Cygnss Gnss-R Data

, 2021
International audienceThe objective of this study is to analyze the potential of global navigation satellite system reflectometry (GNSS-R) data from the Cyclone Global Navigation Satellite System (CYGNSS) constellation to map the subsurface of a desert ...
Mehrez Zribi, Nazzareno Pierdicca, Nicolas Baghdadi, Pierdicca, Nazzareno, Baghdadi, Nicolas, Zribi, Mehrez, Stilla, Donato, Donato Stilla   +7 more
core   +1 more source

The Indian Ocean–Land–Atmosphere (IOLA)‐Coupled Mesoscale Prediction Framework for Inland Severe Weather and Coastal Hazards Forecasting

Meteorological Applications, Volume 33, Issue 1, January/February 2026.
For seamless prediction of severe weather across scales, we developed the Indian Ocean–Land–Atmosphere (IOLA) Coupled Regional Prediction System. Extensive testing demonstrates that IOLA significantly improves predictions, particularly for monsoon‐driven heavy rainfall and coastal hazards.
Sundararaman Gopalakrishnan, Krishna K. Osuri, Dev Niyogi, Sudheer Joseph, Shyama Mohanty, Yerni Srinivas Nekkali, Sasanka Talukdar, N. D. Manikanta, Imamah Ali, Ghassan Alaka, Ananda Das, Raghu Nadimpalli, Akhil Srivastava, Srinivas Kumar Tummala, T. M. Balakrishnan Nair, M. Mohapatra, V. S. Prasad, A. Suryachandra Rao, U. C. Mohanty, R. Krishnan, Frank Marks, M. Ravichandran   +21 more
wiley   +1 more source

Developing Independent CYGNSS Soil Moisture Retrieval Algorithm with Mitigated Vegetation Effects: Incorporating a Two-Step and Relative SNR Approaches

, 2023
Developing Independent CYGNSS Soil Moisture Retrieval Algorithm with Mitigated Vegetation Effects: Incorporating a Two-Step and Relative SNR ...
Zhu, Ziyue
core   +1 more source

NASA CYGNSS Mission Applications Workshop [PDF]

, 2015
NASA's Cyclone Global Navigation Satellite System, (CYGNSS), mission is a constellation of eight microsatellites that will measure surface winds in and near the inner cores of hurricanes, including regions beneath the eyewall and intense inner rainbands ...
Amin, Aimee V., Molthan, Andrew, Stough, Timothy M., Murray, John J.   +3 more
core  

Detecting Localized Floods in Tropical Regions With CYGNSS SmallSat Constellation: A Proof of Concept From the Maritime Continent

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Flooding events are a major contributor to natural disasters across the global tropics. However, reliable flood data are sparse, which limits our ability to understand flood dynamics across spatial and temporal scales. Here, data from the CYGNSS SmallSat constellation are utilized to identify small‐ to regional‐scale flooding events in Sumatra.
Zofia Baldysz, Dariusz B. Baranowski, Piotr J. Flatau, Maria K. Flatau, Clara Chew   +4 more
wiley   +1 more source