Activity Report 2005 - International Foundation High Altitude ...

International Foundation HFSJG
Annual Report 2005
• Source apportionment of carbonaceous aerosols with 14 C
(Laboratory of Radiochemistry and Environmental Chemistry,
University of Bern, Switzerland).................................................................. 85
• Measurements at the High Alpine Station Jungfraujoch to study
the long range transport and in-situ photochemistry (ETH Institute
of Atmospheric and Climate Science, Switzerland)..................................... 87
• Mass spectrometric analysis of residuals from small ice particles and
from supercooled cloud droplets during CLACE 4 (Max Planck Institute
for Chemistry, Particle Chemistry Department, Mainz, Germany).............. 89
• Volatile organic compounds (VOC) in air, snow and ice crystals and
super-cooled droplets at high alpine research station Jungfraujoch
during CLACE 4 (Institut für Atmosphäre und Umwelt, Universität
Frankfurt, Germany)..................................................................................... 93
• CLACE-4 (University of Manchester, School of Earth, Atmosphere
and Environmental Sciences, UK)................................................................ 97
• Sampling and physio-chemical characterization of ice nuclei
in mixed phase clouds (Leibniz-Institut für Troposphärenforschung,
Leipzig, Germany ......................................................................................... 101
• Identification of the ice forming fraction of the atmospheric aerosol in
mixed-phase clouds by environmental scanning electron microscopy
(Institut für Angewandte Geowissenschaften, Umweltmineralogie,
Technische Universität Darmstadt, Germany) ............................................. 105
• Composition Control in the Lower Free Troposphere
(University of Leicester, UK)....................................................................... 113
• Air ion concentrations, dynamics and their relation to new particle
formation in Jungfraujoch (Department of Physical Sciences,
University of Helsinki, Finland)................................................................... 115
• Temporal variation of stable isotopes in Alpine precipitation
(Climate and Environmental Physics, Universität Bern, Switzerland)......... 119
• Neutron Monitors – Study of solar and galactic cosmic rays
(Physikalisches Institut, Universität Bern, Switzerland) .............................. 121
• Study of detector to measure cosmic ray flux at large zenith angles,
(Department of Physics, University of Rome “La Sapienza, Italy).............. 127
• Measuring the flux of cosmic rays arriving nearly horizontally
(Dipartimento di Fisica Nucleare e Teorica and IFNF,
Pavia University, Italy)................................................................................. 129
• Neutron background measurements at Jungfraujoch
(Istituto Nazionale di Fisica Nucleare, Torino, Italy)................................... 131
• Cosmic ray induced failures in biased high power semiconductor
devices (ABB Switzerland Ltd., Semiconductors, Switzerland).................. 135
• Development of a seeing monitor for astronomical applications
(Institut d’automatisation Industrielle, Haute Ecole d’Ingénierie et
de Gestion, Yverdon-les-Bains, Switzerland) .............................................. 137
• Operation of a 70 cm amateur beacon transmitter, operation of a 23 cm
voice repeater station, study of high frequency propagation conditions
(Relaisgemeinschaft HB9F Bern, Switzerland)............................................ 139