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| Titel |
Total column carbon dioxide and methane measurements at Sodankylä |
| VerfasserIn |
Rigel Kivi, Huilin Chen, Juha Hatakka, Pauli Heikkinen, Bert Kers, Tuomas Laurila |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250093337
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| Publikation (Nr.) |
 EGU/EGU2014-7969.pdf |
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| Zusammenfassung |
| Carbon dioxide and methane are the two most important anthropogenic greenhouse gases.
Total column measurements of these gases have been performed at various Total Carbon
Column Observing Network (TCCON) sites using solar Fourier Transform Spectrometers
(FTS), operating in the near infrared spectral region. Sodankylä in northern Finland (at 67.4°
N, 26.6° E) is one of the sites of the TCCON network. At Sodankylä we have performed FTS
measurements since early 2009. Here we present a description of the instrumentation
at Sodankylä and analysis of five years of reprocessed TCCON retrievals at the
site. Relevant to the FTS measurements, in September 2013 we have started with
balloon borne AirCore profile measurements of CO2, CH4 and CO at Sodankylä.
The aim is to continue with year around activities, thus adding available column
information for the winter period. The AirCore measurements are expected to provide
improved profile and total column estimates for the FTS retrieval system. A total gas
column measured by an AirCore sampling system is directly related to the World
Meteorological Organization in situ trace gas measurement scales. Secondly, an
AirCore measurement has the benefit of reaching higher altitudes compared to the
aircraft in situ measurements. Therefore AirCore data could be used to validate
and improve the accuracy of the FTS total column CO2 and CH4 retrievals at the
site. |
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