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NOy at the interface of the planetary boundary layer and the free troposphere from measurements at Jungfraujoch

English title NOy at the interface of the planetary boundary layer and the free troposphere from measurements at Jungfraujoch
Applicant Staehelin Johannes
Number 117626
Funding scheme Project funding (Div. I-III)
Research institution Institut für Atmosphäre und Klima ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Climatology. Atmospherical Chemistry, Aeronomy
Start/End 01.12.2007 - 30.11.2010
Approved amount 162'668.00
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Keywords (7)

nitrogen oxdides; PAN; aerosol particles; long-term changes; tropospheric chemistry; air pollution; long range transprot

Lay Summary (English)

Lead
Lay summary
The high alpine observatory at Jungfraujoch (JFJ) in the Swiss Alps offers very attractive characteristics of field measurements since it allows to sample air of the free troposphere. In our study we will focus on the chemistry of nitrogen species which are key species in tropospheric chemsitry. NOy includes the primary air pollutants NO and NO2 (NOx) as well as species formed by oxidation from NOx .NOy has been continuously measured by Empa since 1995 showing an increase which is presently not well understood since the emissions of nitrogen oxides emitted from Europe have decreased during the same period. In the project additional field measurements will be performed as well as data analysis, including trajectory analysis providing information on the origin of the air masses measured at JFJ.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

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Associated projects

Number Title Start Funding scheme
101683 Carbonyls and PANs at the Jungfraujoch and the related oxidation processes at the boundary layer / free troposphere interface 01.03.2004 Project funding (Div. I-III)
138017 SPARC International Project office 01.02.2012 Research Infrastructure

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