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SUMMARY:EESS Student Seminar talk on "Aerosol Chemical Composition from Te
 thered Balloon Observations at Neumayer III\, Coastal Antarctica"
DTSTART:20261117T121500
DTEND:20261117T124500
DTSTAMP:20261017T030624Z
UID:3752f5b9e4a4995c688b889668b36d5bbf6178d45dbe09a8b9888c82
CATEGORIES:Conferences - Seminars
DESCRIPTION:Yolanda Temel\, EERL \nAbstract:\nTo better understand and pa
 rametrize clouds over the Southern Ocean and Antarctica\, in-situ measurem
 ents of cloud microphysics and aerosol-cloud interactions are essential. D
 uring the ORACLES (ORigin of Antarctic CLoud particles and their Effects o
 n the Surface radiation budget) field campaigns\,  more than 130 in-situ 
 vertical aerosol profile measurements were obtained over the 2024-2025 and
  2025-2026 austral summer seasons at the coastal Antarctic site of Neumaye
 r Station III. A tethered balloon system was used to measure the particle 
 and droplet total number concentrations and size distributions up to 1000 
 m altitude. Filter samples were collected at different altitudes for furth
 er analysis of the aerosol chemical composition. Additionally\, the thermo
 dynamic structure of the lower atmosphere was recorded through temperature
 \, relative humidity and wind measurements. \nHere\, we present initial f
 indings on the chemical composition of the collected aerosol samples\, tog
 ether with the vertical distribution of particle number concentrations and
  size distributions at Neumayer. The chemical composition is analysed usin
 g a new nano-electromechanical membrane coupled with Fourier-transform inf
 rared spectroscopy (NEMS-FTIR) analysis method. This technique significant
 ly reduces the sampling time to 45-90 minutes\, compared with approximatel
 y 24 hours using standard quartz filters for ion chromatography. As aeroso
 l sources at Neumayer are expected to be closely linked to wind direction 
 and broader weather systems\, measurements were conducted under different 
 wind and weather conditions during the two campaigns.\n\nBiography:\nI'm Y
 olanda\, a PhD student in the Extreme Environments Research Laboratory (EE
 RL) with Prof. Julia Schmale. After completing my Master's degree in Chemi
 stry at the University of Fribourg\, I wanted to move towards environmenta
 l chemistry. I spent a few months in Cabo Verde working on the conservatio
 n of endemic seabirds and plants before having the opportunity to spend a 
 semester studying Arctic Technology at the University Centre in Svalbard. 
 I then joined EERL\, where I now work on the sources and composition of co
 astal Antarctic aerosols.
LOCATION:ALP 1 107 https://plan.epfl.ch/?room==ALP%201%20107 https://epfl.
 zoom.us/j/69011077410#success
STATUS:CONFIRMED
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