TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements
We present for the first time a numerical kinetic/fluid code for the ionosphere coupling proton and electron effects. It solves the fluid transport equations up to the eighth moment, and the kinetic equations for suprathermal particles. Its new feature is that for the latter, both electrons and prot...
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ftdoajarticles:oai:doaj.org/article:ff0cac3ee1dc4e8291bfe90ffe7d36b9 2023-05-15T16:04:45+02:00 TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements C. Simon J. Lilensten J. Moen J. M. Holmes Y. Ogawa K. Oksavik W. F. Denig 2007-03-01T00:00:00Z https://doi.org/10.5194/angeo-25-661-2007 https://doaj.org/article/ff0cac3ee1dc4e8291bfe90ffe7d36b9 EN eng Copernicus Publications https://www.ann-geophys.net/25/661/2007/angeo-25-661-2007.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-25-661-2007 0992-7689 1432-0576 https://doaj.org/article/ff0cac3ee1dc4e8291bfe90ffe7d36b9 Annales Geophysicae, Vol 25, Pp 661-673 (2007) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2007 ftdoajarticles https://doi.org/10.5194/angeo-25-661-2007 2022-12-30T20:58:59Z We present for the first time a numerical kinetic/fluid code for the ionosphere coupling proton and electron effects. It solves the fluid transport equations up to the eighth moment, and the kinetic equations for suprathermal particles. Its new feature is that for the latter, both electrons and protons are taken into account, while the preceding codes (TRANSCAR) only considered electrons. Thus it is now possible to compute in a single run the electron and ion densities due to proton precipitation. This code is successfully applied to a multi-instrumental data set recorded on 22 January 2004. We make use of measurements from the following set of instruments: the Defence Meteorological Satellite Program (DMSP) F-13 measures the precipitating particle fluxes, the EISCAT Svalbard Radar (ESR) measures the ionospheric parameters, the thermospheric oxygen lines are measured by an all-sky camera and the H α line is given by an Ebert-Fastie spectrometer located at Ny-Ålesund. We show that the code computes the H α spectral line profile with an excellent agreement with observations, providing some complementary information on the physical state of the atmosphere. We also show the relative effects of protons and electrons as to the electron densities. Computed electron densities are finally compared to the direct ESR measurements. Article in Journal/Newspaper EISCAT Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Ny-Ålesund Svalbard Annales Geophysicae 25 3 661 673 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 C. Simon J. Lilensten J. Moen J. M. Holmes Y. Ogawa K. Oksavik W. F. Denig TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
We present for the first time a numerical kinetic/fluid code for the ionosphere coupling proton and electron effects. It solves the fluid transport equations up to the eighth moment, and the kinetic equations for suprathermal particles. Its new feature is that for the latter, both electrons and protons are taken into account, while the preceding codes (TRANSCAR) only considered electrons. Thus it is now possible to compute in a single run the electron and ion densities due to proton precipitation. This code is successfully applied to a multi-instrumental data set recorded on 22 January 2004. We make use of measurements from the following set of instruments: the Defence Meteorological Satellite Program (DMSP) F-13 measures the precipitating particle fluxes, the EISCAT Svalbard Radar (ESR) measures the ionospheric parameters, the thermospheric oxygen lines are measured by an all-sky camera and the H α line is given by an Ebert-Fastie spectrometer located at Ny-Ålesund. We show that the code computes the H α spectral line profile with an excellent agreement with observations, providing some complementary information on the physical state of the atmosphere. We also show the relative effects of protons and electrons as to the electron densities. Computed electron densities are finally compared to the direct ESR measurements. |
format |
Article in Journal/Newspaper |
author |
C. Simon J. Lilensten J. Moen J. M. Holmes Y. Ogawa K. Oksavik W. F. Denig |
author_facet |
C. Simon J. Lilensten J. Moen J. M. Holmes Y. Ogawa K. Oksavik W. F. Denig |
author_sort |
C. Simon |
title |
TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
title_short |
TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
title_full |
TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
title_fullStr |
TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
title_full_unstemmed |
TRANS4: a new coupled electron/proton transport code – comparison to observations above Svalbard using ESR, DMSP and optical measurements |
title_sort |
trans4: a new coupled electron/proton transport code – comparison to observations above svalbard using esr, dmsp and optical measurements |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/angeo-25-661-2007 https://doaj.org/article/ff0cac3ee1dc4e8291bfe90ffe7d36b9 |
geographic |
Ny-Ålesund Svalbard |
geographic_facet |
Ny-Ålesund Svalbard |
genre |
EISCAT Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
EISCAT Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Annales Geophysicae, Vol 25, Pp 661-673 (2007) |
op_relation |
https://www.ann-geophys.net/25/661/2007/angeo-25-661-2007.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-25-661-2007 0992-7689 1432-0576 https://doaj.org/article/ff0cac3ee1dc4e8291bfe90ffe7d36b9 |
op_doi |
https://doi.org/10.5194/angeo-25-661-2007 |
container_title |
Annales Geophysicae |
container_volume |
25 |
container_issue |
3 |
container_start_page |
661 |
op_container_end_page |
673 |
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1766400386764111872 |