Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities
Plasma densities obtained from EISCAT's UHF incoherent scatter system are compared with profiles inverted from the digital ionograms of a co-located dynasonde. Excellent agreement is found for the bottomside ionosphere when conditions of horizontal stratification and classical photochemical equ...
Published in: | Journal of Atmospheric and Terrestrial Physics |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Elsevier
1988
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/522187/ https://doi.org/10.1016/0021-9169(88)90025-6 |
id |
ftnerc:oai:nora.nerc.ac.uk:522187 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:522187 2023-05-15T16:04:21+02:00 Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities Wright, J.W. Kressman, R.I. Virdi, T.S. Collis, P.N. 1988-04 http://nora.nerc.ac.uk/id/eprint/522187/ https://doi.org/10.1016/0021-9169(88)90025-6 unknown Elsevier Wright, J.W.; Kressman, R.I.; Virdi, T.S.; Collis, P.N. 1988 Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities. Journal of Atmospheric and Terrestrial Physics, 50 (4-5). 405-421. https://doi.org/10.1016/0021-9169(88)90025-6 <https://doi.org/10.1016/0021-9169(88)90025-6> Publication - Article PeerReviewed 1988 ftnerc https://doi.org/10.1016/0021-9169(88)90025-6 2023-02-04T19:47:46Z Plasma densities obtained from EISCAT's UHF incoherent scatter system are compared with profiles inverted from the digital ionograms of a co-located dynasonde. Excellent agreement is found for the bottomside ionosphere when conditions of horizontal stratification and classical photochemical equilibrium prevail. However, departures from such conditions are frequent and intense at Tromsø. Compensating errors of EISCAT calibration and long pulse convolution are resolved by analysis of power profile data. Good agreement is recovered for tilted and more complex ionospheric structure, provided that accurate echo location data are used to confirm a common volume. Monotonic inversion of the ionograms is inadequate. Dynasonde recordings are analysed to show characteristic structure in vertical and horizontal planes as a context for EISCAT measurements along a fixed (magnetic field) direction. Incoherent scatter and modern total reflection sounding, used together and coordinated in one consistent data reduction system, could produce a far more powerful ionospheric diagnostic program than either technique seems capable of providing alone. Article in Journal/Newspaper EISCAT Tromsø Natural Environment Research Council: NERC Open Research Archive Tromsø Journal of Atmospheric and Terrestrial Physics 50 4-5 405 421 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Plasma densities obtained from EISCAT's UHF incoherent scatter system are compared with profiles inverted from the digital ionograms of a co-located dynasonde. Excellent agreement is found for the bottomside ionosphere when conditions of horizontal stratification and classical photochemical equilibrium prevail. However, departures from such conditions are frequent and intense at Tromsø. Compensating errors of EISCAT calibration and long pulse convolution are resolved by analysis of power profile data. Good agreement is recovered for tilted and more complex ionospheric structure, provided that accurate echo location data are used to confirm a common volume. Monotonic inversion of the ionograms is inadequate. Dynasonde recordings are analysed to show characteristic structure in vertical and horizontal planes as a context for EISCAT measurements along a fixed (magnetic field) direction. Incoherent scatter and modern total reflection sounding, used together and coordinated in one consistent data reduction system, could produce a far more powerful ionospheric diagnostic program than either technique seems capable of providing alone. |
format |
Article in Journal/Newspaper |
author |
Wright, J.W. Kressman, R.I. Virdi, T.S. Collis, P.N. |
spellingShingle |
Wright, J.W. Kressman, R.I. Virdi, T.S. Collis, P.N. Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
author_facet |
Wright, J.W. Kressman, R.I. Virdi, T.S. Collis, P.N. |
author_sort |
Wright, J.W. |
title |
Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
title_short |
Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
title_full |
Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
title_fullStr |
Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
title_full_unstemmed |
Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
title_sort |
comparisons of eiscat and dynasonde ionospheric measurements: simple to moderately structured plasma densities |
publisher |
Elsevier |
publishDate |
1988 |
url |
http://nora.nerc.ac.uk/id/eprint/522187/ https://doi.org/10.1016/0021-9169(88)90025-6 |
geographic |
Tromsø |
geographic_facet |
Tromsø |
genre |
EISCAT Tromsø |
genre_facet |
EISCAT Tromsø |
op_relation |
Wright, J.W.; Kressman, R.I.; Virdi, T.S.; Collis, P.N. 1988 Comparisons of EISCAT and dynasonde ionospheric measurements: simple to moderately structured plasma densities. Journal of Atmospheric and Terrestrial Physics, 50 (4-5). 405-421. https://doi.org/10.1016/0021-9169(88)90025-6 <https://doi.org/10.1016/0021-9169(88)90025-6> |
op_doi |
https://doi.org/10.1016/0021-9169(88)90025-6 |
container_title |
Journal of Atmospheric and Terrestrial Physics |
container_volume |
50 |
container_issue |
4-5 |
container_start_page |
405 |
op_container_end_page |
421 |
_version_ |
1766400001271922688 |