Atmospheric measurements of gas-phase HNO 3 and SO 2 using chemical ionization mass spectrometry during the MINATROC field campaign 2000 on Monte Cimone

Abstract. The EU-project MINATROC (MINeral dust And TROpospheric Chemistry) aims at enabling an estimation of the influence of mineral dust, a major, but to date largely ignored component of tropospheric aerosol, on tropospheric oxidant cycles. Within the scope of this project continuous atmospheric measurements of gas-phase HNO3 and SO2 were conducted in June and July 2000 at the CNR WMO station, situated on Monte Cimone (MTC) (44°11' N --10°42' E, 2165 m asl), Italy. African air transporting dust is occasionally advected over the Mediterranean Sea to the site, thus mineral aerosol emitted from Africa will encounter polluted air masses and provide ideal conditions to study their interactions. HNO3 and SO2 were measured with an improved CIMS (chemical ionization mass spectrometry) system for ground-based measurements that was developed and built at MPI-K Heidelberg. Since HNO3 is a very sticky compound special care was paid for the air-sampling and background-measurement system. Complete data sets could be obtained before, during and after major dust intrusions. For the first time these measurements might provide a strong observational indication of efficient uptake of gas-phase HNO3 by atmospheric mineral-dust aerosol particles.

Citation proposal
Markus Hanke (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Bend Umann (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Jens Uecker (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Frank Arnold (Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division) - Helmut Bunz (Institute for Meteorology and Climate Research, Department for Atmospheric Aerosols, Research Center Karlsruhe) (2003) . Atmospheric measurements of gas-phase HNO 3 and SO 2 using chemical ionization mass spectrometry during the MINATROC field campaign 2000 on Monte Cimone. Copernicus GmbH (Copernicus Publications) https://geoportal.mountaingenius.org/geonetwork/srv/api/records/ae6c7bb2-053f-4774-a2fe-0d85cd6c4eee

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File identifier: ae6c7bb2-053f-4774-a2fe-0d85cd6c4eee XML

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Metadata language: eng

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Climatology, meteorology, atmosphere
Environment

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aerosol , free troposphere , Physical aerosol properties

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Mt. Cimone

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MINATROC

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HNO3 , SO2

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chemical ionization mass spectrometry

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Date ( Publication ): 2003-04-03T00:00:00

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ACP - Special Issue

"Mineral dust and tropospheric chemistry (MINATROC 2000)":

-Atmospheric measurements of gas-phase HNO3 and SO2 using chemical ionization mass spectrometry during the MINATROC field campaign 2000 on Monte Cimone:

Hanke, M., Umann, B., Uecker, J., Arnold, F., Bunz, H.

Atmos. Chem. Phys., 3, 417-436, 2003