Zobrazeno 1 - 10
of 11
pro vyhledávání: '"C. F. Minter"'
Publikováno v:
The Journal of the Astronautical Sciences. 53:445-463
New data assimilation techniques have improved time-dependent estimates of the neutral atmospheric density, making it possible to better estimate the drag perturbation on low-Earth-orbiting satellites. This study looks at the potential for using sate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::391f5885343a1574ba789afd58ddda8e
https://doi.org/10.1007/bf03546363
https://doi.org/10.1007/bf03546363
Publikováno v:
Radio Science. 46
[1] On 10 January 2009, an unusual ionospheric scintillation event was observed by a Global Positioning System (GPS) receiver station in Fairbanks, Alaska. The receiver station is part of the National Geospatial-Intelligence Agency's (NGA) Monitoring
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c26f88e10846a59bae0022181c4c1a6
https://doi.org/10.1029/2010rs004412
https://doi.org/10.1029/2010rs004412
Publikováno v:
Radio Science. 43
[1] Accurately modeling the ionosphere is a critical component to many radionavigation applications. However, in a significant number of cases, these models assume the ionosphere is compacted into a thin shell surrounding the Earth, rather than a ful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3aef7435ed41c40fe01225d0e95818a
https://doi.org/10.1029/2007rs003769
https://doi.org/10.1029/2007rs003769
Publikováno v:
Space Weather. 6
[1] New requirements for specification and forecast of the space environment and the availability of unprecedented amounts of real-time data are now driving the development of data assimilation schemes for the thermosphere and ionosphere. Such scheme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d99856fda0e1e7266d1a6178e48045ac
https://doi.org/10.1029/2007sw000364
https://doi.org/10.1029/2007sw000364
Publikováno v:
Radio Science. 42
[1] This paper presents a validation and accuracy assessment of the total electron content (TEC) from US-TEC, a new product presented by the Space Environment Center over the contiguous United States (CONUS). US-TEC is a real-time operational impleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0568047f03d24837cc3d08f8c9c92a74
https://doi.org/10.1029/2006rs003459
https://doi.org/10.1029/2006rs003459
Autor:
Douglas S. Robertson, Andrew R. Jacobson, C. F. Minter, Tim Fuller-Rowell, Eduardo A. Araujo-Pradere, R. W. Moses, P. S. J. Spencer
Publikováno v:
Radio Science. 42
[1] To date, no formal validation of the new ionosphere nowcast system, United States–Total Electron Content (US-TEC), at the Space Environment Center in Boulder, Colorado, has been published. This paper therefore lays part of the validation ground
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92d8b94bfcd4a731851045ee81df9c6e
https://doi.org/10.1029/2006rs003460
https://doi.org/10.1029/2006rs003460
Autor:
Doug Robertson, Abram R. Jacobson, Paul Spencer, C. F. Minter, Tim Fuller-Rowell, Eduardo A. Araujo-Pradere, Mihail Codrescu
Publikováno v:
Radio Science. 41
[1] The potential of data assimilation for operational numerical weather forecasting has been appreciated for many years. For space weather it is a new path that we are just beginning to explore. With the emergence of satellite constellations and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb18664c9b8cd5938df8d26a523b8275
https://doi.org/10.1029/2005rs003393
https://doi.org/10.1029/2005rs003393
Publikováno v:
Space Weather. 2
[1] Global circulation models (GCMs) for the thermosphere ionosphere system have been in use for more than 20 years. In the beginning the GCMs were run on supercomputers, were expensive to run, and were used mainly to provide insight into the physics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9e46019eba6541b528635881023f806
https://doi.org/10.1029/2004sw000088
https://doi.org/10.1029/2004sw000088
Publikováno v:
Space Weather. 2
[1] To determine the propagation parameters of high-frequency radio waves, an accurate estimate of the ionosphere is desirable. Estimating the ionosphere, especially during geomagnetic storm times, is strongly dependent on perturbations in the neutra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a08a853ccc75c8a4b40c5a82b7d7ed2b
https://doi.org/10.1029/2003sw000006
https://doi.org/10.1029/2003sw000006
Publikováno v:
Radio Science. 39
[1] During a geomagnetic storm, Joule heating heats the neutral gas and drives horizontally divergent winds which force upwelling of the neutral atmosphere. The heavier molecular species N2 and O2, abundant in the lower thermosphere, are transported
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40f65d7fb9ebcfaf7cae90db65cdb5e5
https://doi.org/10.1029/2002rs002835
https://doi.org/10.1029/2002rs002835