Results 21 to 30 of about 376,247 (350)

Longitudinal variability of thermospheric zonal winds near dawn and dusk

Frontiers in Astronomy and Space Sciences, 2023
Understanding the morphology and dynamics of the thermosphere is key to understanding the Earth’s upper atmosphere as a whole. Thermospheric winds play an important role in this process by transporting momentum and energy and affecting the composition ...
Ivana Molina, Ludger Scherliess
doaj   +1 more source

First E region observations of mesoscale neutral wind interaction with auroral arcs [PDF]

, 2010
We report the first observations of E region neutral wind fields and their interaction with auroral arcs at mesoscale spatial resolution during geomagnetically quiet conditions at Mawson, Antarctica.
Aikio, Anderson, Armstrong, Arnoldy, Aruliah, Aruliah, Aruliah, Aruliah, B. A. Carter, Brekke, Burch, C. Anderson, Chisham, Cierpka, Codrescu, Conde, Conde, Conde, Crickmore, Currie, Davies, del Pozo, Deng, Doe, Doe, Egeland, Friis-Christensen, Fuller-Rowell, Galperin, Greenwald, Heelis, Hernandez, Holmes, Iijima, Iijima, Kamide, Killeen, Killeen, Killeen, Kirkwood, Knudsen, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Larsen, Lewis, M. Conde, M. J. Kosch, Makarevich, McCormac, Millward, Nozawa, Opgenoorth, P. L. Dyson, Price, Price, R. A. D. Fiori, R. A. Makarevich, Rees, Rees, Rees, Ruohoniemi, Schlegel, Schunk, Senior, Senior, Senior, Störmer, T. Davies, Thayer, Tsunoda, Vickrey, Wang, Weimer, Wescott, Zmuda   +80 more
core   +1 more source

Neutral winds from protostars

The Astrophysical Journal, 1992
We present Arecibo 21 cm line observations of neutral winds associated with young stellar objects. We confirm the detection of fast neutral winds in HH 7-11 and in L1551. These two winds have been coarsely mapped along the CO outflow direction. For the case of HH 7-11, we find that the maximum velocity declines from 170 km s −1 at the center (SVS 13),
Carlo Giovanardi, Susana Lizano, Antonella Natta, Neal J., II Evans, Carl Heiles   +4 more
openaire   +1 more source

On the hydrogen neutral outflowing disks of B[e] supergiants [PDF]

, 2006
(abridged) B[e] supergiants are known to possess geometrically thick dusty disks. Disk-forming wind models have, however, been found to be insufficient in reproducing the observed dust emission.
F. X. de Araújo, Grevesse, Hamuy, Kafatos, Kraus, Kraus, Lamers, M. Borges Fernandes, M. Kraus, McGregor, McGregor, Mendoza, Porter, Zickgraf, Zickgraf   +14 more
core   +4 more sources

Spatiotemporal Evolution and Drivers of the Four Ionospheric Storms over the American Sector during the August 2018 Geomagnetic Storm

Atmosphere, 2023
The spatiotemporal variations and mechanisms of the ionospheric storms over the American sector during the August 2018 geomagnetic storm are investigated.
Changzhi Zhai, Yutian Chen, Xiaoyun Cheng, Xunzhe Yin   +3 more
doaj   +1 more source

Field and Wind Tunnel Experiments of Wind Field Simulation in the Neutral Atmospheric Boundary Layer

Atmosphere, 2022
To investigate the pollutant dispersion of a nuclear power plant, a field tracing experiment was carried out in neutral stratification weather with the main wind direction SSW.
Dong Xie, Peilin Xiao, Ninghua Cai, Lixin Sang, Xiumin Dou, Hanqing Wang   +5 more
doaj   +1 more source

Variations of topside ionospheric electron density near the dawn terminator in relation to geomagnetic activity

Journal of Space Weather and Space Climate, 2017
A statistical study to determine the influence of geomagnetic disturbances on the ionosphere across the dawn terminator at subauroral and middle latitudes is performed, based on the vertical electron density profiles measured by the GPS Occultation ...
Tam Sunny W.Y., Chen Chien-Han, Wang Kaiti   +2 more
doaj   +1 more source

A neutral wind instrument for nano-satellite platforms

Review of Scientific Instruments, 2018
Here we describe the first neutral wind sensor developed specifically for use on resource limited nano-satellite platforms. The instrument is a next generation redesign of the ram wind sensor flown on the Communications/Navigation Outage Forecasting System satellite for measurements of neutral velocity, temperature, and composition.
L. J. Kordella, G. D. Earle, G. Roth, S. Noel, R. V. Robertson, R. L. Davidson, C. E. Holland, V. Garg   +7 more
openaire   +5 more sources

Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert [PDF]

PeerJ, 2022
Near-surface (10 m) wind speed (NWS) plays a crucial role in many areas, including the hydrological cycle, wind energy production, and the dispersion of air pollution.
Xinchun Liu, Yongde Kang, Hongna Chen, Hui Lu   +3 more
doaj   +2 more sources

Characterization of F-region neutral wind response times and its controlling factors during substorms

Frontiers in Astronomy and Space Sciences
Ion-neutral coupling is responsible for dissipating energy deposited into the high-latitude ionosphere during geomagnetically active periods. The neutral wind response time, or the ion-neutral coupling efficiency, is not well characterized, with a wide ...
Katherine Davidson, Ying Zou, Leslie Lamarche, Asti Bhatt, Mark Conde   +4 more
doaj   +1 more source