 |
| Titel |
Vertical profiles of SF6 observed by MIPAS-Balloon: Determination of stratospheric age of air between 1995 and 2014 |
| VerfasserIn |
Katharina Maurer, Gerald Wetzel, Felix Friedl-Vallon, Florian Haenel, Michael Höpfner, Anne Kleinert, Guido Maucher, Hans Nordmeyer, Hermann Oelhaf, Johannes Orphal, Gabriele Stiller, Andreas Engel |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250150067
|
| Publikation (Nr.) |
 EGU/EGU2017-14491.pdf |
|
|
|
|
|
| Zusammenfassung |
| Climate model simulations indicate an acceleration of the Brewer-Dobson circulation in
response to global climate change. As a result a decrease of the mean age of air, which is a
good indicator of the stratospheric transport, is predicted.
As a contribution to this topic, we present an analysis of measurements, obtained by the
MIPAS-Balloon instrument that has been operated during 20 high-altitude balloon flights
between 1995 and 2014. Our results can contribute to a more complete dataset for the
analysis of the temporal development of the mean age of air.
Focussing on the trace gas SF6, vertical volume mixing ratio profiles were derived from
measured limb emission spectra of selected flights. Based on the vertical volume mixing ratio
profiles mean age of air profiles were calculated and compared to available in-situ
observations, cryosamples and remote sensing data from MIPAS-Envisat.
We will present first results of mean age of air profiles and their development in the polar
latitudes (flights from Kiruna) and the mid latitudes (flights from Aire sur l’Adour and
Timmins). |
|
|
|
|
|
|