Stähelin Johannes

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

Project Number: 200020-117626
Project Type: Research_Project
Project Duration: 12/01/2007 - 11/30/2010 project completed
Funding Source: SNSF ,
Project Leader: Prof. Johannes Stähelin
ETH Zentrum, CHN, P16.1
Obere Bahnhofstrasse 6
8092 7402 Bonaduz
Phone: +41 (0) 44 633 27 48 ; +41 (0) 44 633 27 55
FAX: +41 (0) 44 633 10 58
e-Mail: johannes.staehelin(at)env.ethz.ch
http://www.iac.ethz.ch

related to this project.
for which the project has a relevance.


Research Areas:
Biodiversity

Disciplines:
climatology, atmospheric physics, aeronomy

Keywords:
nitrogen oxdides, pan, aerosol particles, long-term changes, tropospheric chemistry, air pollution, long range transprot

Abstract:
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.

URL: http://e-collection.library.ethz.ch/eserv/eth:4181/eth-4181-01.pdf

Publications:
Pandey, Shubha. 2011. Peroxyacetylnitrate (PAN) and NOy at the interface of free troposphere and planetary boundary layer at Jungfraujoch. PhD Thesis, ETH Zürich.
pdf Thesis

Source of Information: NF Import 2008


Last update: 8/11/22
Source of data: ProClim- Research InfoSystem (1993-2024)
Update the data of project: CH-117626

Go Back