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| Titel |
A new UK Greenhouse Gas measurement network providing ultra high-frequency measurements of key radiatively active trace gases taken from a network of tall towers |
| VerfasserIn |
A. Grant, S. O'Doherty, A. J. Manning, P. G. Simmonds, R. G. Derwent, J. B. Moncrieff, W. T. Sturges |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069187
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| Zusammenfassung |
| Monitoring of atmospheric concentrations of gases is important in assessing the impact
of international policies related to the atmospheric environment. The effects of
control measures on greenhouse gases introduced under the Montreal and Kyoto
Protocols are now being observed. Continued monitoring is required to assess the
overall success of the Protocols. For over 15 years the UK Government have funded
high-frequency measurements of greenhouse gases and ozone depleting gases at
Mace Head, a global background measurement station on the west coast of Ireland.
These continuous, high-frequency, high-precision measurements are used to estimate
regional (country-scale) emissions of greenhouse gases across the UK using an
inversion methodology (NAME-Inversion) that links the Met Office atmospheric
dispersion model (Numerical Atmospheric dispersion Modelling Environment -
NAME) with the Mace Head observations. This unique inversion method acts to
independently verify bottom up emission estimates of radiatively active and ozone-depleting
trace gases. In 2011 the UK government (DECC) funded the establishment and
integration of three new tall tower measurements stations in the UK, to provide enhanced
resolution emission maps and decrease uncertainty of regional emission estimates
produced using the NAME-Inversion. One station included in this new UK network
was already established in Scotland and was used in collaboration with Edinburgh
University. The two other new stations are in England and were set-up early in
2012, they contain brand new instrumentation for measurements of greenhouse
gases. All three additional stations provide ultra high-frequency (1 sec) data of CO2
and CH4 using the Picarro© Cavity Ring Down Spectrometer and high frequency
(20 min) measurements of N2O and SF6 from custom built sample modules with
GC-ECD.
We will present the new tall tower UK measurement network in detail. Using high-frequency
measurements at new operational sites, including Mace Head, we will present the latest
inversion results from the new network highlighting the enhanced resolution in regional
emission maps for the UK. These results are presented to the UK government periodically
and provide independent verification of the emission estimates of radiatively active trace
gases. These results also inform policy makers on the accuracy of inventory emissions
estimates of radiatively active and ozone-depleting trace gases. |
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