Aerosol processes in the planetary boundary layer : high resolution aerosol mass spectrometry on a Zeppelin NT airship / Florian Rubach. 2013
Inhalt
- Contents
- Abstract
- 1 Introduction
- 1.1 Atmospheric aerosol and its relevance
- 1.2 Aerosol properties
- 1.3 Aerosol mass spectrometry
- 1.4 Pan-European gas-aerosols-climate interaction study (PEGASOS)
- 1.5 Planetary boundary layer (PBL)
- 1.6 Focus of this work
- 2 Experimental section
- 2.1 PEGASOS campaigns
- 2.2 Airship Zeppelin NT as a measurement platform
- 2.3 The SOA cabin layout
- 2.4 The Aerosol Mass Spectrometer (AMS)
- 2.4.1 Quantification
- 2.4.2 Calibration procedures
- 2.4.2.1 Flow calibration
- 2.4.2.2 Velocity calibration
- 2.4.2.3 Ionization efficiency calibration
- 2.4.2.4 Thresholding-related calibrations
- 2.4.3 Mass spectra interpretation
- 2.5 Adaptation of the Aerosol Mass Spectrometer to Zeppelin requirements
- 2.5.1 Mounting in a 19 inch Rack
- 2.5.2 Technical changes
- 2.5.2.1 Turbomolecular pumps
- 2.5.2.2 Mass spectrometer
- 2.5.2.3 Data acquisition
- 2.5.2.4 Valve control
- 2.5.3 Changes of measurement technology
- 2.6 Performance of the new instrument
- 2.7 Aerosol hygroscopicity
- 3 Observations
- 3.1 Height profiling
- 3.1.1 Rotterdam: 2012-05-21, Flight No. 11
- 3.1.2 Rotterdam: 2012-05-24, Flight No. 14
- 3.1.3 Ozzano: 2012-06-20, Flights No. 27+28
- 3.1.4 Ozzano: 2012-07-03, Flight No. 40
- 3.2 Transects
- 4 Results and Discussion
- 4.1 Comparison with particle number based measurements
- 4.2 Chemical composition in the east- and southbound campaigns
- 4.3 Chemical composition and hygroscopicity
- 4.3.1 Compound contributions to hygroscopicity
- 4.3.2 Predicted CCN activities of encountered aerosol
- 4.4 Aerosol composition differences inside and outside of the mixing layer
- 4.5 Local production vs. Transport
- 4.6 Aerosol ion balance
- 5 Conclusions
- Nomenclature
- Bibliography
- A Flight tracks
- B Hygroscopicity parameter time series
- Acknowledgements