Results 121 to 130 of about 65,405 (227)

Thermospheric Energy and Heating Due To Upward Propagating and in Situ Generated Tides During Solar Cycle 24

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We investigate vertical and horizontal energy transport and associated heating in the thermosphere due to both upward propagating and in situ generated migrating and nonmigrating diurnal and semidiurnal tides over the solar cycle 24 (2009–2019).
Mukta Neogi, Jens Oberheide, Xian Lu
wiley   +1 more source

Synthetic aperture radar target simulator [PDF]

, 1984
A simulator for simulating the radar return, or echo, from a target seen by a SAR antenna mounted on a platform moving with respect to the target is described.
Bickler, T. C., Goldstein, R. M., Held, D. N., Zebker, H. A.   +3 more
core   +1 more source

Near‐Inertial Wave Trapping Inside a Fine‐Scale Anticyclonic Eddy During the BioSWOT‐Med 2023 Cruise: Turbulence and Energy Flux

Journal of Geophysical Research: Oceans, Volume 131, Issue 3, March 2026.
Abstract Near‐inertial waves (NIWs) are an important source of turbulence for the ocean interior. Mesoscale anticyclonic eddies are known to facilitate their propagation at depth while trapping them. However, in situ observations have so far focused on large (>50 ${ >} 50$ km radius), energetic eddies, whereas most of the ocean is populated by smaller,
Robin Rolland, Pascale Bouruet‐Aubertot, Yannis Cuypers, Anthony Bosse, Anne Petrenko, Tancrède Maytie, Aurélien Ponte, Stéphanie Barrillon, Maristella Berta, Baptiste Mourre, Ananda Pascual, Lloyd Izard, Xavier Capet, Gérald Grégori, Francesco d’Ovidio, Andrea Doglioli   +15 more
wiley   +1 more source

Identifying Thermodynamic Regimes of CO2 Gas Exchange During the Melt Transition on First‐Year Sea Ice Using a Multi‐Sensor Synthetic Aperture Radar Approach

Journal of Geophysical Research: Oceans, Volume 131, Issue 3, March 2026.
Abstract Few multi‐year observations of CO2 gas exchange exist over melting first year sea ice (FYI). We report 4 years of CO2 flux data during the melt season in Dease Strait, Nunavut, Canada. Utilizing a dried, closed‐path eddy covariance system on an island within the strait, we identify two statistically distinct CO2 flux melt regimes: a pre‐pond ...
Christina A. Braybrook, Brent G. T. Else, Zoe Walker, Kiran Yendamuri, C. J. Mundy, Alexander S. Komarov   +5 more
wiley   +1 more source

Doppler radar remote sensing of respiratory function. [PDF]

Front Physiol, 2023
Ishrak MS, Cai F, Islam SMM, Borić-Lubecke O, Wu T, Lubecke VM.   +5 more
europepmc   +1 more source

Planetary radar [PDF]

The radar astronomy activities supported by the Deep Space Network are reported. The high power S- and X-band radar transmitters at the Goldstone 64 meter station were used for a radar probe of Mars during January, February, and March 1980, which was ...
Downs, G. S., Taylor, R. M.
core   +1 more source

Development of a radar simulator for monitoring wake vortices in rainy weather [PDF]

, 2011
A simulator for the evaluation of the radar signature of raindrops within wake vortices is presented. Simulated Doppler spectrum of raindrops within vortices let to think that it could be a potential criterion for identifying wake vortex hazard in ...
Jeannin, Nicolas, Liu, Zongxhun, Vincent, François, Wang, Xuesong   +3 more
core  

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

Ambiguity and area preserving linear transformations in over‐the‐horizon radar

IET Radar, Sonar & Navigation
The use of recurrent waveforms in over‐the‐horizon radar (OTHR) necessitates techniques for ambiguity resolution and manipulation. This paper provides a number of techniques for manipulating the shape of radar ambiguity functions.
Stephen D. Howard, Van Khanh Nguyen
doaj   +1 more source

Radar principles [PDF]

Discussed here is a kind of radar called atmospheric radar, which has as its target clear air echoes from the earth's atmosphere produced by fluctuations of the atmospheric index of refraction.
Sato, Toru
core   +1 more source