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Long term trend in the high latitude ionosphere
Language
English
Obiettivo Specifico
3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
5/26 (2001)
Publisher
Pergamon
Pages (printed)
303-307
Issued date
2001
Keywords
Abstract
The long-term variability of the critical frequency of the F2
ionospheric layer, f0F2, has been investigated as a possible
indicator of the increasing greenhouse effect. The
prehmmary results obtained by analysing 34 years of data
from high latitude ionospheric stations in the Southern
Hemisphere have shown a decreasing of the plasma
frequency according to what predicted by theoretical model
calculations.
ionospheric layer, f0F2, has been investigated as a possible
indicator of the increasing greenhouse effect. The
prehmmary results obtained by analysing 34 years of data
from high latitude ionospheric stations in the Southern
Hemisphere have shown a decreasing of the plasma
frequency according to what predicted by theoretical model
calculations.
References
Bremer J., Ionospheric trends m mid-latitudes as a possible indicator of the
atmospheric greenhouse effect, J. Atmos. Terr. Phys., 54, 1505-
1511 (1992).
Bremer J., Trends in the ionospheric E and F regions over Europe, Ann.
Geophysicae 16, 986-996 (1998)
Houghton J T ,G Melra Fdho, B. A. Callander, N Hams, A Kattenberg,
and K. Maskell, Chmate Change 1995, Contribution of WGl to
the H Assesment Report of the lntergovernmental Panel on
Chmate Change, Cambridge Umverslty Press, Cambridge, UK
(1996)
IRI, International reference ionosphere 1990, ed. by D Bdltza, NSSDC 90-
22, Greenbelt, MA, USA
307
ITU-R, HF propagation prediction method, Recommendation ITU-R P.
313, International Telecommunication Union, Geneva, (1995).
Jarvts M. J., B. Jenkms, and G. A. Rodgers, Southern hemisphere
observations of long term decrease in F region altitude and
thermospheric wind providing possible evidence for global
thermospheric cooling, Jr. Geophys Res. 103, 29774-29787
(1998).
Makaro~a L N, A V Shtrochkov, The magnetopause positron as an
indicator of the ~ontzatlon level m the dayside high laUtude
:onosphere, Radto Sctence 33, 1877-1884 (1998)
Ma~,aud. P N , Derivation, meaning and use of geomagneuc radices,
Geoph) stcal Monograph 22, A GU Washington. DC, 1980
R~shbeth H, A greenhouse effect m the ionosphere ?, Planet Space Sci.
38,945-948 (1990).
Rlshbeth H, and R G. Roble, Cooling of the upeer atmosphere by
enhanced greenhouse gases- Modelling of the thermospheric
and ionospheric effects, Planet. Space Sci. 40, 1011-1026
(1992).
Taubenhelm J., Statistische Auswertung geophysikalischer und
meteorologlscher Daten, Akad Verlagsgesell. Geest & Portig
K -G. Letpzig (1969).
Uhch Yh, E Turunen, Evidence for long term coohng of the upper
atmosphere, Geophys. Res Lett., 24, 1103-1106 (1997)
Wrenn G L, Time-Wlghted Accumulations ap(r) and Kp(T), Journal of
Geopt(~stcal Research. 92,125-129 (1987)
atmospheric greenhouse effect, J. Atmos. Terr. Phys., 54, 1505-
1511 (1992).
Bremer J., Trends in the ionospheric E and F regions over Europe, Ann.
Geophysicae 16, 986-996 (1998)
Houghton J T ,G Melra Fdho, B. A. Callander, N Hams, A Kattenberg,
and K. Maskell, Chmate Change 1995, Contribution of WGl to
the H Assesment Report of the lntergovernmental Panel on
Chmate Change, Cambridge Umverslty Press, Cambridge, UK
(1996)
IRI, International reference ionosphere 1990, ed. by D Bdltza, NSSDC 90-
22, Greenbelt, MA, USA
307
ITU-R, HF propagation prediction method, Recommendation ITU-R P.
313, International Telecommunication Union, Geneva, (1995).
Jarvts M. J., B. Jenkms, and G. A. Rodgers, Southern hemisphere
observations of long term decrease in F region altitude and
thermospheric wind providing possible evidence for global
thermospheric cooling, Jr. Geophys Res. 103, 29774-29787
(1998).
Makaro~a L N, A V Shtrochkov, The magnetopause positron as an
indicator of the ~ontzatlon level m the dayside high laUtude
:onosphere, Radto Sctence 33, 1877-1884 (1998)
Ma~,aud. P N , Derivation, meaning and use of geomagneuc radices,
Geoph) stcal Monograph 22, A GU Washington. DC, 1980
R~shbeth H, A greenhouse effect m the ionosphere ?, Planet Space Sci.
38,945-948 (1990).
Rlshbeth H, and R G. Roble, Cooling of the upeer atmosphere by
enhanced greenhouse gases- Modelling of the thermospheric
and ionospheric effects, Planet. Space Sci. 40, 1011-1026
(1992).
Taubenhelm J., Statistische Auswertung geophysikalischer und
meteorologlscher Daten, Akad Verlagsgesell. Geest & Portig
K -G. Letpzig (1969).
Uhch Yh, E Turunen, Evidence for long term coohng of the upper
atmosphere, Geophys. Res Lett., 24, 1103-1106 (1997)
Wrenn G L, Time-Wlghted Accumulations ap(r) and Kp(T), Journal of
Geopt(~stcal Research. 92,125-129 (1987)
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