News

19.11.2018: Kaluza et al., 2018 in ACPD

A new view on the static stability structure of extratropical cyclones is presented using a composite analysis of cyclones identified from ECMWF operational analysis data. The analysis shows, that even in regions of high static stability conditions favorable for cross tropopause exchange exist, which are linked to the occurrence of strong vertical shear of horizontal winds (https://www.atmos-chem-phys-discuss.net/acp-2018-1100/)

7 - 9 November 2018, OCTAV-UTLS workshop in Mainz

The 2nd meeting of the SPARC activity OCTAV-UTLS took place at the Helmholtz Institute (HIM) in Mainz. Speakers from the United States, UK, France and Gernany discussed new approaches and potential methods to account for the dynamical induced variability of ozone observations from different observations systems. These include radio sondes, LIDAR, aircraft measurements and satellite observations. The group defined a set of common diagnostic approaches to be applied to the different data sets, which allow to directly compare distributions and trends of ozone from different platforms and observational geometries consistently in the UTLS region. The comparison will be done at the next meeting in the United States at the Table Mountain lidar site.

13.10.2018: New discussion paper in ACPD

A summary paper about the advances of our understanding in the processes controlling Arctic aerosols during the NETCARE project led by Jonathan Abbatt (University of Toronto) and W. Richard Leaitch (Environment and Climate Change, Toronto) has been published for discussion in ACPD.
Our group contributed with airborne measurements during NETCARE 2014 and NETCARE 2015 as well as with FLEXPART simulations to analyze air mass histories.

02.10.2018: New discussion paper in ACPD

A new study led by Meng Si (University of British Columbia) on ice-nucleating particles in the Canadian High Arctic during spring 2016 is available in ACPD.
Our group provided FLEXPART results for a source attribution of the ice-nucleating particles.

01.-05.10.2018: SPARC General Assembly in Kyoto, Japan

This week the SPARC GA takes place in Kyoto, Japan.
Peter Hoor will present first results on the WISE campaign and an overview on the OCTAV-UTLS activities.

31.08.2018: OCTAV-UTLS workshop, 7 - 9 November 2018, Mainz

The SPARC OCTAV - UTLS working group will meet for a data meeting from 7 - 9 November 2018 at the Johannes Gutenberg University in Mainz. We will host this meeting which will take place at the Helmholtz Institute Mainz (HIM).

More information can be found here.

24.08.2018: New discussion paper in ACPD

A new study led by Megan Willis (University of Toronto) on the vertical distribution of aerosols in the high Arctic is available now in ACPD.
Our group contributed airborne measurement data, ECMWF analysis data as well as results from FLEXPART simulations.

07.08.2018: HALO mission CAFE AFRICA started

Two member of our group, Franziska Köllner and Oliver Eppers, participate in the current HALO mission CAFE-AFRICA (lead: MPIC, Mainz) which is based on Cap Verde and studies the influence of the massive biomass burning emissions from southern Africa on the atmospheric oxidation capacity over the tropical and South Atlantic Ocean.

More information can be found here.