Atmospheric Trends Above Finland:
In the present study we analyse various long-term data series of measurements run by the Sodankylä Geophysical Observatory for possible indications of cooling trends in the upper atmosphere. We review trends seen in the ionospheric F2 peak altitude measured by ionosondes and compare them with the Fi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.544.2251 2023-05-15T16:04:38+02:00 Atmospheric Trends Above Finland: I Mesosphere The Pennsylvania State University CiteSeerX Archives 1998 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.2251 http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.2251 http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf text 1998 ftciteseerx 2016-01-08T11:12:35Z In the present study we analyse various long-term data series of measurements run by the Sodankylä Geophysical Observatory for possible indications of cooling trends in the upper atmosphere. We review trends seen in the ionospheric F2 peak altitude measured by ionosondes and compare them with the Finnish ionosondes at Nurmijärvi and Sodankylä as well as with comparable observations of the EISCAT incoherent scatter radars. Furthermore we study trends seen in the data of the Finnish riometer network at 7 different latitudes. While some of the observed trends suggest cooling, a consistent signal of upper atmospheric cooling, caused possibly by increasing amounts of greenhouse gases, cannot be deduced from the data. Key words: Ionosphere, global change, evolution of the atmosphere, ionosphere/atmosphere interac-tions, atmospheric composition and structure, atmosphere Text EISCAT Sodankylä Unknown Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) |
institution |
Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
In the present study we analyse various long-term data series of measurements run by the Sodankylä Geophysical Observatory for possible indications of cooling trends in the upper atmosphere. We review trends seen in the ionospheric F2 peak altitude measured by ionosondes and compare them with the Finnish ionosondes at Nurmijärvi and Sodankylä as well as with comparable observations of the EISCAT incoherent scatter radars. Furthermore we study trends seen in the data of the Finnish riometer network at 7 different latitudes. While some of the observed trends suggest cooling, a consistent signal of upper atmospheric cooling, caused possibly by increasing amounts of greenhouse gases, cannot be deduced from the data. Key words: Ionosphere, global change, evolution of the atmosphere, ionosphere/atmosphere interac-tions, atmospheric composition and structure, atmosphere |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
I Mesosphere |
spellingShingle |
I Mesosphere Atmospheric Trends Above Finland: |
author_facet |
I Mesosphere |
author_sort |
I Mesosphere |
title |
Atmospheric Trends Above Finland: |
title_short |
Atmospheric Trends Above Finland: |
title_full |
Atmospheric Trends Above Finland: |
title_fullStr |
Atmospheric Trends Above Finland: |
title_full_unstemmed |
Atmospheric Trends Above Finland: |
title_sort |
atmospheric trends above finland: |
publishDate |
1998 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.2251 http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Sodankylä |
geographic_facet |
Sodankylä |
genre |
EISCAT Sodankylä |
genre_facet |
EISCAT Sodankylä |
op_source |
http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.2251 http://www.geophysica.fi/pdf/geophysica_1999_35_1-2_059_ulich.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766400240356687872 |