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Laboratory of Atmospheric Chemistry (LAC)

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LAC - Laboratory of Atmospheric Chemistry

The Laboratory of Atmospheric Chemistry (LAC), established 1 January 2000, is a laboratory of the Energy and Environment Research Division (ENE) at the Paul Scherrer Institute (PSI).

Mission

Understanding the processes determining the gas and aerosol chemistry and aerosol physics in the atmosphere in order to determine (1) the impact of energy use on the atmosphere and (2) the impact of pollution on air quality, human health, local weather and climate change.

LAC Mission
LAC's mission

Our laboratory consists of four interacting groups that operates cutting-edge facilities and instrumentations in the lab and in the field. We run three National facilities, two ambient observatories and an atmospheric chamber facility, that are foreseen to be included in the ACTRIS European research infrastructure. We study the impact of anthropogenic air pollution across environments ranging from cities in Europe and developing countries (e.g. India and China) to pristine areas (e.g. in polar regions and in the free troposphere). We are continuously measuring key climate variables relevant for aerosol properties at the landmark high-alpine Jungfraujoch research site in Switzerland. We simulate the processes occurring in the atmosphere in our smog chamber facility and during experiments at the CLOUD chamber at CERN. Field and laboratory data are interpreted and air pollution sources are quantified with numerical and statistical models. We collaborate with toxicologists, epidemiologists and medical doctors to understand the impact of air pollution on health.

News & Highlights

13 March 2023
Smog in India

Extreme nighttime pollution in New Delhi air explained

Media Releases Energy and Climate Environment

PSI researchers find the cause of high nighttime air pollution in New Delhi

Read more
9 December 2022
Andrea Baccarini

Andrea Baccarini – Winner of the Prix de Quervain

Andrea Baccarini, former PhD at the Laboratory of Atmospheric Chemistry at PSI won the prestigious Prix de Quervain.

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14 October 2022
JFJ

Jungfraujoch Carbon Balance Campaign measures wildfire emissions from southern Europe

The Jungfraujoch Carbon Balance Campaign is a measuring campaign within the ACTRIS project. It is conducted by the Paul Scherrer Institute in collaboration with the Stiftung HFSJG, Empa, FHNW, as well as groups from Lille (France), York (England), and Aerosol d.o.o. (Slovenia). The campaign’s aim is to comprehensively measure and characterize the diversity of carbon-containing molecules present in the air in hopes to obtain helpful information on their role in climate and weather relevant processes.

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16 September 2022
Imad El Haddad

Winner of the Schmauss Award 2022!

Imad El Haddad, scientific head (a.i.) of the lab of atmospheric chemistry at PSI, won the Schmauss Award 2022!
The Schmauss award, named after physicist and meteorologist August Schmauss is awarded by the Gesellschaft für Aerosolforschung (GAeF) to recognize outstanding research contributions in the field of atmospheric aerosol science. 

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Contact

Laboratory of Atmospheric Chemistry
Forschungsstrasse 111
5232 Villigen PSI
Switzerland
 


Mohr Claudia


Laboratory Head LAC
Claudia Mohr
Telephone: +41 56 310 54 77
E-mail: claudia.mohr@psi.ch

 


Indlekofer Claudia


Assistant
Claudia Indlekofer
Telephone: +41 56 310 25 22
E-mail: claudia.indlekofer@psi.ch

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Forschungsstrasse 111
5232 Villigen PSI
Switzerland

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