Determination of the Auroral Oval Q Index from the Air Weather Service K Index
Author | : B. S. Dandekar |
Publisher | : |
Total Pages | : 36 |
Release | : 1993 |
Genre | : Geomagnetic indexes |
ISBN | : |
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Author | : B. S. Dandekar |
Publisher | : |
Total Pages | : 36 |
Release | : 1993 |
Genre | : Geomagnetic indexes |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 700 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : B. S. Dandekar |
Publisher | : |
Total Pages | : 0 |
Release | : 1993 |
Genre | : Geomagnetic indexes |
ISBN | : |
The AWS determines the auroral oval diameter in real time as a function of the Kp index from the particle precipitation measured aboard Defense Meteorological Satellites (DMSP). For the Q index needed to drive the auroral algorithm in the AWS polar ionospheric model, Hardy determined a relation between the Kp and the Q index. The analysis indicates that the auroral oval index Q computed from the AWS-K is overestimated. A least-squared deviation circle is fitted to the data base used in the Hardy algorithm. Using a four-year data set of Kp and Q observations, a new relation between the planetary magnetic activity index Kp and Q is determined to rectify this overestimation of the Q index. The new relation is :Q=0.964 Kp-0.3 for Kp2 + and 0=2.04 Kp-2.7 for Kp2 +. The improved, more precise Q values obtained from this relation will improve prediction of the auroral oval phenomena that affect the performance of the real time operational systems.
Author | : B. S. Dandekar |
Publisher | : |
Total Pages | : 110 |
Release | : 1996 |
Genre | : Ionospheric radio wave propagation |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1016 |
Release | : 1982 |
Genre | : Government reports announcements & index |
ISBN | : |
Author | : J. D. Huba |
Publisher | : John Wiley & Sons |
Total Pages | : 735 |
Release | : 2014-03-17 |
Genre | : Science |
ISBN | : 1118704452 |
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 201. Modeling the Ionosphere-Thermosphere System brings together for the first time a detailed description of the physics of the IT system in conjunction with numerical techniques to solve the complex system of equations that describe the system, as well as issues of current interest. Volume highlights include discussions of: Physics of the ionosphere and thermosphere IT system, and the numerical methods to solve the basic equations of the IT system The physics and numerical methods to determine the global electrodynamics of the IT system The response of the IT system to forcings from below (i.e., the lower atmosphere) and from above (i.e., the magnetosphere) The physics and numerical methods to model ionospheric irregularities Data assimilation techniques, comparison of model results to data, climate variability studies, and applications to space weather Providing a clear description of the physics of this system in several tutorial-like articles, Modeling the Ionosphere-Thermosphere System is of value to the upper atmosphere science community in general. Chapters describing details of the numerical methods used to solve the equations that describe the IT system make the volume useful to both active researchers in the field and students.
Author | : |
Publisher | : |
Total Pages | : 104 |
Release | : 1970-12 |
Genre | : |
ISBN | : |
The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.