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SUMMARY:Imaging Chemistry in Cities
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20203101T000000
UID:2026-05-16-07-58-04@natsci.colostate.edu
DTSTAMP:20260516T075804
Description:About the Seminar:\nObservations of NO2 using orbiting UV/Vis s
 pectrometers provide detailed images of cities. Interpreting the images pr
 ovides insight into present day emissions and chemistry as well as a view 
 into trends in chemistry over the last 15 years. In this talk I\\'ll descr
 ibe development of methods that allow for accurate interpretation of the o
 bserved spectra and explore novel approaches to using the space based obse
 rvations as a constraint on trends in urban atmospheric chemistry. Remaini
 ng challenges for inferring the concentration of and trends in urban OH fr
 om space will be discussed.\nAbout the Speaker:\nRonald C. Cohen is Profes
 sor of Chemistry and Professor of Earth and Planetary Science at the Unive
 rsity of California\, Berkeley. Cohen received a Ph.D. in Physical Chemist
 ry from UC Berkeley in 1991 and did his post-doctoral training at Harvard 
 University. He was Director of the Berkeley Atmospheric Science Center fro
 m 2006-2016. He is a fellow of the American Association for the Advancemen
 t of Science and the American Geophysical Union. Cohen has mentored over 5
 0 PhD students and postdoctoral fellows and is co-author of over 260 peer-
 reviewed scientific papers.\nCohen\\'s air quality and climate research co
 mbines satellite\, in situ and laboratory observations with state-of-the-a
 rt modeling. He is known for his work establishing that RONO2 molecules ar
 e a more important sink of NOx than HONO2 on the continents. His group pro
 duced\, BEHR\, the first continental scale\, high spatial resolution\, ana
 lyses of satellite remote sensing of tropospheric NO2. These are publicall
 y available http://behr.cchem.berkeley.edu/. Cohen’s is also the develop
 er of BEACO2N\, a sensor network observing urban GHGs\, trace gases and ae
 rosol with unprecedented spatial resolution: www.beacon.berkeley.edu. BEAC
 O2N was recognized in the Obama administration’s Climate Data Initiative
  in summer 2014. It is a central part of the Koret Institute of Personal P
 revention\, connecting neighborhood scale atmospheric observations to the 
 occurrence of childhood asthma in an effort to tailor prevention and treat
 ment to individuals. 4:00 pm
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