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An Algorithm For Determining The Boundary Of Auroral Precipitation Using Data From The Ssj 3 Sensor
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Book Synopsis An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensor by : David A. Hardy
Download or read book An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensor written by David A. Hardy and published by . This book was released on 1980 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In support of the Global Weather Central of the Air Weather Service, we have developed computer techniques to determine, in near real time, the equatorward boundary of the auroral oval using the data from the SSJ/3 sensors flown on board the DMSP satellites. The boundary is determined on both the morning and evening sides of the oval and in both northern and southern auroral zones. Three tests are used in the boundary determination, one on the evening side and two on the morning side of the auroral oval. On the evening side of the auroral zone, since low energy particles always are observed at the lowest latitude, the boundary is determined by testing the summed counts in the six channels of the SSJ/3 detector covering the energy range from 110 eV to 1000 eV. The boundary is chosen when the summed counts exceed 30 for 3 successive seconds. The data are always tested as a function of increasing magnetic latitude. On the morning side, high energy electrons are always observed first. Since the channels measuring high energy electrons may be contaminated by penetrating particles from the ring belts, two tests are required. The first test picks the boundary at the point where three successive ratios of 4-sec averages of channel 8 to channel 9 are less than 5. The second test chooses the boundary where the ratio of the summed counts in channels 1 through 4 of the SSJ/3 sensor to channels 5 through 8 exceeds 1.5 or is less than 0.5 for 3 successive seconds.
Book Synopsis An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensor by : David A. Hardy
Download or read book An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensor written by David A. Hardy and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In support of the Global Weather Central of the Air Weather Service, we have developed computer techniques to determine, in near real time, the equatorward boundary of the auroral oval using the data from the SSJ/3 sensors flown on board the DMSP satellites. The boundary is determined on both the morning and evening sides of the oval and in both northern and southern auroral zones. Three tests are used in the boundary determination, one on the evening side and two on the morning side of the auroral oval. On the evening side of the auroral zone, since low energy particles always are observed at the lowest latitude, the boundary is determined by testing the summed counts in the six channels of the SSJ/3 detector covering the energy range from 110 eV to 1000 eV. The boundary is chosen when the summed counts exceed 30 for 3 successive seconds. The data are always tested as a function of increasing magnetic latitude. On the morning side, high energy electrons are always observed first. Since the channels measuring high energy electrons may be contaminated by penetrating particles from the ring belts, two tests are required. The first test picks the boundary at the point where three successive ratios of 4-sec averages of channel 8 to channel 9 are less than 5. The second test chooses the boundary where the ratio of the summed counts in channels 1 through 4 of the SSJ/3 sensor to channels 5 through 8 exceeds 1.5 or is less than 0.5 for 3 successive seconds.
Book Synopsis An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensors by : David A. Hardy
Download or read book An Algorithm for Determining the Boundary of Auroral Precipitation Using Data from the SSJ/3 Sensors written by David A. Hardy and published by . This book was released on 1980 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In support of the Global Weather Central of the Air Weather Service, we have developed computer techniques to determine, in near real time, the equatorward boundary of the auroral oval using the data from the SSJ/3 sensors flown on board the DMSP satellites. The boundary is determined on both the morning and evening sides of the oval and in both northern and southern auroral zones. Three tests are used in the boundary determination, one on the evening side and two on the morning side of the auroral oval. On the evening side of the auroral zone, since low energy particles always are observed at the lowest latitude, the boundary is determined by testing the summed counts in the six channels of the SSJ/3 detector covering the energy range from 110 eV to 1000 eV. The boundary is chosen when the summed counts exceed 30 for 3 successive seconds. The data are always tested as a function of increasing magnetic latitude. On the morning side, high energy electrons are always observed first. Since the channels measuring high energy electrons may be contaminated by penetrating particles from the ring belts, two tests are required. The first test picks the boundary at the point where three successive ratios of 4-sec averages of channel 8 to channel 9 are less than 5. The second test chooses the boundary where the ratio of the summed counts in channels 1 through 4 of the SSJ/3 sensor to channels 5 through 8 exceeds 1.5 or is less than 0.5 for 3 successive seconds.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1980 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 1978 Diffuse Auroral Boundaries and a Derived Auroral Boundary Index by : M. S. Gussenhoven
Download or read book 1978 Diffuse Auroral Boundaries and a Derived Auroral Boundary Index written by M. S. Gussenhoven and published by . This book was released on 1982 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: DMSP/F2 and F4 precipitating electron data are used to determine statistically the systematic variations of the equatorward boundary with Kp as a function of local time. The boundaries were chosen by hand for every DMSP/F2 satellite pass in 1978. These in turn are used to assess an algorithm developed to choose the boundaries automatically. From the statistical variations each boundary is projected to a midnight boundary. The projected midnight boundary served as an index of auroral activity-the Auroral Boundary Index. Listing of the 1978 hand- and computer-chosen boundaries and the Auroral Boundary Index for 1978 are included in appendices.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1980-07 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis R & D Abstracts by : Technology Reports Centre (Great Britain)
Download or read book R & D Abstracts written by Technology Reports Centre (Great Britain) and published by . This book was released on 1980 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precipitating Electron and Ion Detectors (SSJ/4) for the Block 5D/flights 6-10 DMSP Satellites by : David A. Hardy
Download or read book Precipitating Electron and Ion Detectors (SSJ/4) for the Block 5D/flights 6-10 DMSP Satellites written by David A. Hardy and published by . This book was released on 1984 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Science written by and published by . This book was released on 1988 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precipitating Ion and Electron Detectors (SSJ/4) for the Block 5D/flight 8 DMSP Satellite by : T. L. Schumaker
Download or read book Precipitating Ion and Electron Detectors (SSJ/4) for the Block 5D/flight 8 DMSP Satellite written by T. L. Schumaker and published by . This book was released on 1988 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recommendations and Reports of the CCIR, 1986 by : International Radio Consultative Committee
Download or read book Recommendations and Reports of the CCIR, 1986 written by International Radio Consultative Committee and published by . This book was released on 1986 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Research Papers written by and published by . This book was released on with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1980 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis HF Communications Systems and Technology by : John M. Goodman
Download or read book HF Communications Systems and Technology written by John M. Goodman and published by Springer. This book was released on 1992-05-28 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communications engineers, ionospheric scientists, engineers and scientists in DoD HF projects, and DoD managers will use this source to gain a working understanding of the basic theory involved in HF radiowave propagation and uses of HF technology today.
Book Synopsis The Effect of the Ionosphere on Communication, Navigation, and Surveillance Systems by : John M. Goodman
Download or read book The Effect of the Ionosphere on Communication, Navigation, and Surveillance Systems written by John M. Goodman and published by . This book was released on 1988 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Instrumentation Papers written by and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
