Results 21 to 30 of about 9,069 (264)

A model sensitivity study of the impact of clouds on satellite detection and retrieval of volcanic ash [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
Volcanic ash is commonly observed by infrared detectors on board Earth-orbiting satellites. In the presence of ice and/or liquid-water clouds, the detected volcanic ash signature may be altered.
A. Kylling   +5 more
doaj   +1 more source

Modeling Envisat RA-2 waveforms in the coastal zone: case-study of calm water contamination [PDF]

open access: yes, 2010
Radar altimeters have so far had limited use in the coastal zone, the area with most societal impact. This is due to both lack of, or insufficient accuracy in the necessary corrections, and more complicated altimeter signals. This paper examines waveform
Vignudelli, Stefano   +13 more
core   +1 more source

Potential of high-resolution detection and retrieval of precipitation fields from X-band spaceborne synthetic aperture radar over land [PDF]

open access: yesHydrology and Earth System Sciences, 2011
X-band Synthetic Aperture Radars (X-SARs), able to image the Earth's surface at metric resolution, may provide a unique opportunity to measure rainfall over land with spatial resolution of about few hundred meters, due to the atmospheric moving-target ...
F. S. Marzano   +6 more
doaj   +1 more source

Modeling the effect of glacier recession on streamflow response using a coupled glacio-hydrological model [PDF]

open access: yesHydrology and Earth System Sciences, 2014
We describe an integrated spatially distributed hydrologic and glacier dynamic model, and use it to investigate the effect of glacier recession on streamflow variations for the upper Bow River basin, a tributary of the South Saskatchewan River, Alberta ...
B. S. Naz   +4 more
doaj   +1 more source

Mesoscale ionospheric electrodynamics of omega bands determined from ground-based electromagnetic and satellite optical observations [PDF]

open access: yes, 2005
International audienceWe present ground-based electromagnetic data from the MIRACLE and BEAR networks and satellite optical observations from the UVI and PIXIE instruments on the Polar satellite of an omega band event over Northern Scandinavia on 26 June
Viljanen, A.   +17 more
core   +1 more source

Response of the Ionospheric TEC to SSW and Associated Geomagnetic Storm Over the American Low Latitudinal Sector

open access: yesSpace Weather, 2022
During the sudden stratospheric warming (SSW) event in 2013, we investigated the American low latitude around 75°W. We used 12 Global Positioning System (GPS) receivers, a pair of magnetometers, and the NASA Thermosphere Ionosphere Mesosphere Energetics ...
J. B. Fashae, O. S. Bolaji, A. B. Rabiu
doaj   +1 more source

Satellite laser ranging to GPS and GLONASS [PDF]

open access: yes, 2015
Satellite laser ranging (SLR) to the satellites of the global navigation satellite systems (GNSS) provides substantial and valuable information about the accuracy and quality of GNSS orbits and allows for the SLR-GNSS colocation in space.
Dach, Rolf   +14 more
core   +1 more source

Dynamic Retrieval of Olive Tree Properties Using Bayesian Model and Sentinel-2 Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The goal of this study is to provide a fine detection and monitoring of olive orchard trees over large areas to anticipate any damage. We developed an original method to assess the spatiotemporal dynamics of biophysical parameters in the olive orchards ...
Hana Abdelmoula   +3 more
doaj   +1 more source

Modelling of electromagnetic signatures of global ocean circulation: physical approximations and numerical issues

open access: yesEarth, Planets and Space, 2019
The interactions of flowing electrically conductive seawater with Earth’s magnetic field generate electric currents within the oceans, as well as secondary electric currents induced in the resistive solid Earth. The ocean-induced magnetic field (OIMF) is
Libor Šachl   +7 more
doaj   +1 more source

Variations of the 630.0 nm airglow emission with meridional neutral wind and neutral temperature around midnight [PDF]

open access: yesAnnales Geophysicae, 2018
The ISUAL payload onboard the FORMOSAT-2 satellite has often observed airglow bright spots around midnight at equatorial latitudes. Such features had been suggested as the signature of the thermospheric midnight temperature maximum (MTM) effect, which
C.-Y. Chiang   +3 more
doaj   +1 more source

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