Results 31 to 40 of about 86,460 (309)

Aperiodic and wave disturbances in the ionosphere: the results of vertical sounding»

, 2021
The monograph presents the study results of aperiodic and quasi-periodic wave perturbations in the ionosphere during unique phenomena in geospace: partial solar eclipses, the fall of the Chelyabinsk cosmic body and during the operation of a powerful ...
O. V. Bogomaz, L. Chernogor, V. Barabash, S. V. Katsko   +3 more
semanticscholar   +1 more source

Vertical and oblique ionospheric soundings over a very long multihop HF radio link from polar to midlatitudes: Results and relationships [PDF]

Radio Science, 2009
A vertical incidence sounder (VIS) was installed at the Spanish Antarctic Base (62.7°S, 299.6°E) during the Antarctic summer survey 2004–2005. In addition, an oblique sounding (OS) system for HF communications between Antarctica and Spain (12,700 km) has been operated during the Antarctic summers since December 2003.
C. Vilella, D. Miralles, D. Altadill, F. Acosta, J. G. Solé, J. M. Torta, J. L. Pijoan   +6 more
openaire   +3 more sources

Orographic and convective gravity waves above the Alps and Andes mountains during GPS radio occultation events – a case study [PDF]

, 2017
The significant distortions introduced in the measured atmospheric gravity wavelengths by soundings other than in vertical and horizontal directions, are discussed as a function of elevation angle of the sounding path and the gravity waves aspect ratio ...
Alexander, Pedro Manfredo, Cremades, Pablo Gabriel, de la Torre, Alejandro, Hierro, Rodrigo Federico, Llamedo Soria, Pablo Martin, Steiner, Andrea K.   +5 more
core   +1 more source

Ionospheric Narrowband and Wideband HF Soundings for Communications Purposes: A Review

Sensors, 2020
High Frequency (HF) communications through ionospheric reflection is a widely used technique specifically for maritime, aeronautical, and emergency services communication with remote areas due to economic and management reasons, and also as backup system.
Marcos Hervás, Pau Bergadà, Rosa Ma Alsina-Pagès   +2 more
doaj   +1 more source

Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica [PDF]

, 2009
We present the results of several radio-echo sounding surveys carried out on Johnsons and Hurd Glaciers, Livingston Island, Antarctica, between the 1999/2000 and 2004/05 austral summer campaigns, which included both radar profiling and common-midpoint ...
Ahlstrom, L.P., Lapazaran Izargain, Javier Jesús, Macheret, Yu, Machío, F., Navarro Valero, Francisco Jose, Otero García, Jaime, Vasilenko, Evgeniy   +6 more
core   +2 more sources

GPS radio occultation with CHAMP and GRACE: A first look at a new and promising satellite configuration for global atmospheric sounding [PDF]

Annales Geophysicae, 2005
CHAMP (CHAllenging Minisatellite Payload) and GRACE (Gravity Recovery And Climate Experiment) formed a satellite configuration for precise atmospheric sounding during the first activation of the GPS (Global Positioning System) radio occultation ...
J. Wickert, G. Beyerle, R. König, S. Heise, L. Grunwaldt, G. Michalak, Ch. Reigber, T. Schmidt   +7 more
doaj   +1 more source

Limb sounders tracking topographic gravity wave activity from the stratosphere to the ionosphere around midlatitude Andes [PDF]

, 2015
Several studies have shown that the surroundings of the highest Andes mountains at midlatitudes in the Southern Hemisphere exhibit gravity waves (GWs) generated by diverse sources which may traverse the troposphere and then penetrate the upper layers if ...
Alexander, Alexander, Alexander, Anthes, Baines, Baumgaertner, Bilitza, Fritts, Hamming, Hines, Hocke, Hocke, Hocke, John, Kursinski, La Torre, Lin, Lin, Lin, Liou, Llamedo, Luna, Lund, McDonald, Mlynczak, Moffat-Griffin, Park, Reisin, Sato, Schmidt, Schreiner, Smith, Torre, Torre, Torre, Tsuda, Vadas, Vadas, Vadas, Vadas, Wilson, Yue   +41 more
core   +1 more source

Performance Evaluation of High-Resolution Simulations with COSMO over South Italy

Atmosphere, 2020
This study aims to assess the capabilities of a weather forecasting system based on simulations performed with the COSMO (COnsortium for Small-scale Modeling) model over a domain located in southern Italy, employing a spatial resolution of about 1 km ...
Edoardo Bucchignani, Paola Mercogliano
doaj   +1 more source

Limb Sounders Tracking Tsunami-Induced Perturbations from the Stratosphere to the Ionosphere

Remote Sensing, 2022
In this study, we employ three types of satellite data from two different limb sounders: the FORMOSAT-3/COSMIC (F3/C) radio occultation (RO) technique and the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument to study the ...
Xiangxiang Yan, Tao Yu, Chunliang Xia
doaj   +1 more source

New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core [PDF]

, 2004
International audienceWe have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B‐Vostok station ice flow line (East Antarctica). We show that new evaluations of
Arnaud, Bard, Bender, Blunier, Blunier, Connolley, Drewry, Drewry, EPICA Community Members, F. Parrenin, Genty, Hutter, Imbrie, Jouzel, Lorius, Parrenin, Parrenin, Petit, Raisbeck, Raisbeck, Raisbeck, Richardson, Ritz, Ritz, Rémy, Shackleton, Siegert, Testut, Udisti, Wang, Yiou   +30 more
core   +3 more sources