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SUMMARY:Inaugural Lecture Prof. Athanasios Nenes
DTSTART:20190618T171500
DTEND:20190618T190000
DTSTAMP:20260406T155959Z
UID:24f5f9b435f398ae9641be9615b1fb2b44bad0e4c90bb88808429376
CATEGORIES:Inaugural lectures - Honorary Lecture
DESCRIPTION:Prof. D. Andrew Barry\, ENAC Dean ad interim: Welcome and intr
 oduction\nProf. Athanasios Nenes: Inaugural lecture\nAtmospheric particula
 te matter and its impacts on climate\, public health and ecosystems\n\nAbs
 tract\nHuman activities profoundly alter the composition of the atmosphere
 \, leading to a cascade of effects on climate\, ecosystems and human healt
 h. Atmospheric particulate matter\, or aerosols\, play a central role in a
 ll these changes\; they affect climate by modulating the Earth’s energy 
 balance\, clouds and precipitation\; they contain toxic compounds which up
 on inhalation cause millions of premature deaths every year. The same part
 icles also contain substances that act as nutrients when deposited in ecos
 ystems\, which in turn can affect primary productivity. Much of the predic
 tive uncertainty surrounding human impacts on the Earth System are related
  to poorly understood processes involving the emission\, transformation an
 d related impacts of atmospheric aerosol. This talk will present key aspec
 ts of aerosol-related research carried out at the Laboratory of Atmospheri
 c Processes and their Impacts at EPFL\, emphasizing findings\, directions 
 and future outlook.\nWe will first present research related to the climate
  effects of aerosol. We will show how improvements in the representation o
 f droplet and ice formation in climate models\, instrument development eff
 orts and related field observations have transformed our ability to unders
 tand the most uncertain aspect of anthropogenic change: aerosol-cloud-clim
 ate interactions. Afterwards\, we will focus on research focused on aeroso
 l composition – specifically on aerosol acidity (pH). Despite its import
 ance as a driver of aerosol concentration\, chemistry\, toxicity and nutri
 ent bioavailability\, aerosol pH remains poorly constrained because its di
 rect measurement is currently not possible. We present recent advances in 
 constraining in-situ particle pH from the thermodynamic analysis of aeroso
 l and gas-phase composition\, and show that strong acidity (pH of 0 to 3) 
 is ubiquitous in global aerosol. We then continue on showing how this rene
 wed understanding of aerosol pH can help unravel the observed trends in ae
 rosol toxicity and bioavailability of nutrients contained within them.\n\n
 Short Bio\nAthanasios Nenes is a Professor and head of LAPI at IEE/ENAC/EP
 FL. He is affiliated with the Institute of Chemical Engineering Science (P
 atras\, Greece) and the National Observatory of Athens (Athens\, Greece). 
 He authored 270 manuscripts\, developed the ISORROPIA aerosol model\, and 
 instrumentation to measure aerosol properties and Cloud Condensation Nucle
 i. He serves as President of Atmospheric Sciences of the European Geophysi
 cal Union\, and member of the UN Joint Group of Experts on the Scientific 
 Aspects of Marine Environmental Protection (WG38: Atmospheric input of che
 micals to the ocean)\, the Committee on Nucleation and Atmospheric Aerosol
 s\, Editor in Atmospheric Chemistry and Physics and served on the US Natio
 nal Academies Committee on the Future of Atmospheric Chemistry Research (2
 014-2016)\, Secretary of Atmospheric Sciences of the American Geophysical 
 Union (2012-2016)\, and Board of Directors of the American Association for
  Aerosol Research (2014-2017). His distinctions include an ERC Consolidato
 r Grant (2016)\; Vaughan Lectureship\, California Institute of Technology 
 (2014)\; Ascent Award\, American Geophysical Union (2012)\; Whitby Award\,
  American Association for Aerosol Research (2011)\; Houghton Award\, Ameri
 can Meteorological Society (2009)\; Sigma Xi Young Faculty Award (2007)\; 
 Friedlander Award\, American Association for Aerosol Research (2005)\; NAS
 A New Investigator Award (2004) and a National Science Foundation CAREER A
 ward (2004).\n\nRegistration is required: https://forms.gle/qNEFRLRmdhTjdX
 1P7 
LOCATION:CM 1 2 https://plan.epfl.ch/?room==CM%201%202
STATUS:CONFIRMED
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