Call for an Intercomparison campaign of NO3-CI-APi-TOFMS

University of Helsinki is partnering up with TROPOS, and it is our pleasure to invite you to the first intercomparison workshop of nitrate ion chemical ionization time-of-flight mass spectrometers. We aim for improved quality of aerosol precursor gas measurements and clusters by the means of targeted experiments of highly oxygenated compounds and sulfuric acid. The intercomparison workshop will be organized at the new twin chamber facility ACD-C (Atmospheric Chemistry Department Chamber) at TROPOS, Leipzig, Germany in late autumn 2020, please answer this poll to indicate your participation and the most suitable days for your group: https://doodle.com/poll/nx46nis475777xug

 

Our initial 2-week long experimental plan is following. The plan is not fixed, we are open for suggestions regarding the experimental plan:

Day 1-2: Set up

Day 3: calibration with ISOPOOH, different concentrations.

Day 4: alpha-pinene + OH, variation of ΔHC, 3 steps

Day 5: alpha-pinene + O3, variation of ΔHC, 3 steps

Day 6: alpha-pinene + OH, high RH,  3 steps

Day 7: alpha-pinene + O3, high RH, 3 steps

Day 8: NOx dependency run

Day 9: sulfuric acid runs with different concentration (end of campaign)

Day 10: back-up

 

Cost: The facility costs are covered by UHEL and TROPOS. Unfortunately, participants have to cover their instrument's transport and travel + accommodation costs for their instrument operators.

Participants from EUROCHAMP-2020 community and from ACTRIS project should consider participation in the intercomparison workshop as a part of their future QA/QC measures.

We are looking forward seeing you in Leipzig next year and please don't hesitate to contact us for questions!

 

Partner

Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany

Institute for Atmospheric and Earth System Research (INAR) / Physics Faculty of Science, University of Helsinki, Finland

 

Contact points

Anke Mutzel, TROPOS Leipzig, mutzel@tropos.de

Hartmut Herrmann, TROPOS Leipzig, herrmann@tropos.de

Tuija Jokinen, INAR/Universität Helsinki, tuija.jokinen@helsinki.fi

The intercomparison workshop will be organized at the new twin chamber facility ACD-C (Atmospheric Chemistry Department Chamber) at TROPOS, Leipzig, Germany in late autumn 2020. (Photo: Tilo Arnhold, TROPOS)