Total ozone decrease in the Arctic after REP events
Abstract. Eight periods of relativistic electron precipitation (REP) with electron energies of more than 300 keV are identi®ed from VLF data (10±14 kHz) monitored along the Aldra (Norway) ± Apatity (Kola peninsula) radio trace. In these cases, anomalous ionization below 55±50 km occurred without dis...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.371.8455 2023-05-15T14:59:24+02:00 Total ozone decrease in the Arctic after REP events V. C. Roldugin M. I. Beloglazov G. F. Remenets The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.8455 http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.8455 http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf text ftciteseerx 2016-01-08T01:20:53Z Abstract. Eight periods of relativistic electron precipitation (REP) with electron energies of more than 300 keV are identi®ed from VLF data (10±14 kHz) monitored along the Aldra (Norway) ± Apatity (Kola peninsula) radio trace. In these cases, anomalous ionization below 55±50 km occurred without disturbing the higher layers of the ionosphere. The daily total ozone values in Murmansk for six days before and six days after the REP events are compared. In seven of eight events a decrease in the total ozone of about 20 DU is observed. In one event of 25 March, 1986, the mean total ozone value for six days before the REP is bigger than that for six days after, but this a case of an extremely high ozone increase (144 DU during the six days). However, on days 3 and 4 there was a minimum of about 47 DU with regard to REP days, so this case also con®rms the concept of the ozone decrease after REP. The di€erence between mean ozone values for periods six days before and six days after the REPs was found also for 23 points in Arctic on TOMS data. The di€erence was negative only in Murmansk longitudinal sector. Along the meridian of the trace it was negative at high latitudes in both hemispheres and was near zero at low latitudes. Key words: Atmospheric composition and structure (middle atmosphere ± composition and chemistry) ± Meteorology and atmospheric dynamics (polar meteorology) 1 Text Arctic kola peninsula Unknown Aldra ENVELOPE(13.100,13.100,66.400,66.400) Apatity ENVELOPE(33.403,33.403,67.564,67.564) Arctic Kola Peninsula Murmansk Norway |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
Abstract. Eight periods of relativistic electron precipitation (REP) with electron energies of more than 300 keV are identi®ed from VLF data (10±14 kHz) monitored along the Aldra (Norway) ± Apatity (Kola peninsula) radio trace. In these cases, anomalous ionization below 55±50 km occurred without disturbing the higher layers of the ionosphere. The daily total ozone values in Murmansk for six days before and six days after the REP events are compared. In seven of eight events a decrease in the total ozone of about 20 DU is observed. In one event of 25 March, 1986, the mean total ozone value for six days before the REP is bigger than that for six days after, but this a case of an extremely high ozone increase (144 DU during the six days). However, on days 3 and 4 there was a minimum of about 47 DU with regard to REP days, so this case also con®rms the concept of the ozone decrease after REP. The di€erence between mean ozone values for periods six days before and six days after the REPs was found also for 23 points in Arctic on TOMS data. The di€erence was negative only in Murmansk longitudinal sector. Along the meridian of the trace it was negative at high latitudes in both hemispheres and was near zero at low latitudes. Key words: Atmospheric composition and structure (middle atmosphere ± composition and chemistry) ± Meteorology and atmospheric dynamics (polar meteorology) 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
V. C. Roldugin M. I. Beloglazov G. F. Remenets |
spellingShingle |
V. C. Roldugin M. I. Beloglazov G. F. Remenets Total ozone decrease in the Arctic after REP events |
author_facet |
V. C. Roldugin M. I. Beloglazov G. F. Remenets |
author_sort |
V. C. Roldugin |
title |
Total ozone decrease in the Arctic after REP events |
title_short |
Total ozone decrease in the Arctic after REP events |
title_full |
Total ozone decrease in the Arctic after REP events |
title_fullStr |
Total ozone decrease in the Arctic after REP events |
title_full_unstemmed |
Total ozone decrease in the Arctic after REP events |
title_sort |
total ozone decrease in the arctic after rep events |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.8455 http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf |
long_lat |
ENVELOPE(13.100,13.100,66.400,66.400) ENVELOPE(33.403,33.403,67.564,67.564) |
geographic |
Aldra Apatity Arctic Kola Peninsula Murmansk Norway |
geographic_facet |
Aldra Apatity Arctic Kola Peninsula Murmansk Norway |
genre |
Arctic kola peninsula |
genre_facet |
Arctic kola peninsula |
op_source |
http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.8455 http://hal.archives-ouvertes.fr/docs/00/31/65/99/PDF/angeo-18-332-2000.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766331501116391424 |