Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Stefan E. Thonnard"'
Autor:
Sixto A. González, Andrew W. Stephan, Gary S. Bust, Farzad Kamalabadi, Stefan E. Thonnard, Kenneth F. Dymond, Daniel M. Cotton, Robert P. McCoy, Scott A. Budzien, Paul A. Bernhardt, Supriya Chakrabarti
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 64:1573-1580
Tomographic characterization of ionospheric and thermospheric structures using integrated line-of-sight measurements provides a unifying paradigm for the investigation of various aeronomic phenomena. In radio tomography, measurements of the total ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a183e2b8342372bcdf19012b341db8a7
https://doi.org/10.1016/s1364-6826(02)00096-2
https://doi.org/10.1016/s1364-6826(02)00096-2
Autor:
Kenneth F. Dymond, Scott A. Budzien, Andrew W. Stephan, Robert P. McCoy, Supriya Chakrabarti, Stefan E. Thonnard
Publikováno v:
Journal of Geophysical Research: Space Physics. 106:30323-30330
We report the detection of storm time enhancements in the low-latitude far ultraviolet airglow as observed by the Low-Resolution Airglow and Aurora Spectrograph on the Advanced Research and Global Observation Satellite. The enhancements are present i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b36a6605aae150a00ac3b6eea6abcc2c
https://doi.org/10.1029/2001ja001103
https://doi.org/10.1029/2001ja001103
Autor:
Kenneth F. Dymond, Ronald J. Thomas, Scott A. Budzien, Andrew C. Nicholas, Robert P. McCoy, Stefan E. Thonnard
Publikováno v:
Journal of Geophysical Research: Space Physics. 106:30315-30321
We present electron density profiles derived by inversion of ultraviolet limb radiances observed on November 24, 1999, by the Low-Resolution Airglow and Aurora Spectrograph instrument on the Advanced Research and Global Observing Satellite. The solar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95f2ab6684f76b09792dbb436ffd6ea8
https://doi.org/10.1029/2001ja001102
https://doi.org/10.1029/2001ja001102
Publikováno v:
Geophysical Research Letters. 28:927-930
We present electron density profiles derived by inversion of ultraviolet limb scans made by the High Resolution Airglow and Aurora Spectroscopy (HIRAAS) experiment on the Advanced Research and Global Observing Satellite (ARGOS). The ultraviolet limb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd6d3ddb82802211704ccdbbdd77db5
https://doi.org/10.1029/2000gl012312
https://doi.org/10.1029/2000gl012312
Autor:
Scott A. Budzien, Robert P. McCoy, Ronald J. Thomas, T. N. Bullett, Stefan E. Thonnard, Eric Bucsela, Kenneth F. Dymond
Publikováno v:
Journal of Geophysical Research: Space Physics. 105:23025-23033
We present the results of an analysis of the O II 834 A and O I 1356 A altitude profiles measured during a sounding rocket flight on March 19, 1992. The profiles were analyzed using a new set of models that used discrete inverse theory to seek a maxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6d8a84370f154ad33a6f5943b9bb7d1
https://doi.org/10.1029/1999ja000450
https://doi.org/10.1029/1999ja000450
Autor:
Nestor Aponte, Stephen C. Collins, Michael C. Kelley, Jonathan J. Makela, Stefan E. Thonnard, Wesley E. Swartz, Craig A. Tepley
Publikováno v:
Geophysical Research Letters. 27:2825-2828
A series of campaigns has been carried out in the Caribbean over a one-year period to study intense mid-latitude spread-F events using a cluster of diversified instrumentation. These events are relatively rare but a number of them have now been captu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a0053077b670ee45606a353d0444f42
https://doi.org/10.1029/2000gl000022
https://doi.org/10.1029/2000gl000022
Autor:
Kenneth F. Dymond, Stefan E. Thonnard, J. M. Picone, Andrew C. Nicholas, Douglas P. Drob, R. R. Meier
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 62:1317-1326
A key application to be derived from Space Weather research will be to forecast atmospheric drag on low Earth orbit (LEO) satellites with significantly better accuracy than is attainable today. The recently launched STP P91-1 ARGOS mission will serve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::308747ebf74e1a56f81a216c233c7a23
https://doi.org/10.1016/s1364-6826(00)00105-x
https://doi.org/10.1016/s1364-6826(00)00105-x
Autor:
Judith Lean, Douglas P. Drob, J. M. Picone, Andrew C. Nicholas, R. R. Meier, A. E. Hedin, Stefan E. Thonnard
Publikováno v:
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science. 25:537-542
The Naval Research Laboratory (NRL) has embarked on a development program to upgrade empirical models of the neutral upper atmosphere (thermosphere and upper mesosphere) and to apply these models to scientific and engineering problems. The program fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b325c0cb12eb8804fbf18106c8ebab27
https://doi.org/10.1016/s1464-1917(00)00072-6
https://doi.org/10.1016/s1464-1917(00)00072-6
Publikováno v:
Radio Science. 32:1985-1996
We present a technique for using the measured variations of ultraviolet emissions produced by radiative recombination at 911 and 1356 A to determine the nighttime altitude distribution of F region O+ ions and electrons. The algorithm uses an iterativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fbcf315624cc9a237922bd9dbb64568
https://doi.org/10.1029/97rs01887
https://doi.org/10.1029/97rs01887
Autor:
Kenneth F. Dymond, T. Joseph W. Lazio, Pamela J. Loughmiller, Jonathan J. Makela, Clayton Coker, Stefan E. Thonnard
Publikováno v:
Radio Science. 44
[1] Radio astronomers are searching the cosmos for new scientific discoveries at increasingly lower radio frequencies and with larger antenna arrays, but their observations of the sky are blurred by the dynamic ionosphere. At the same time, ionospher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e2a878e37dccdb458f959bf827d4119
https://doi.org/10.1029/2008rs004079
https://doi.org/10.1029/2008rs004079