BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:US/Eastern BEGIN:DAYLIGHT DTSTART:20220313T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20221106T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220518T145534Z UID:DC4E6993-736B-4493-9EC5-A8F9D776E3C4 DTSTART;TZID=US/Eastern:20220511T180000 DTEND;TZID=US/Eastern:20220511T193000 DESCRIPTION:Controlling ground-level ozone smog has proven to be a persiste nt challenge in many U.S. air quality jurisdictions. Ozone is a secondary air pollutant that forms through atmospheric chemistry and depends non-lin early on precursor emissions of nitrogen oxides (NOx) and volatile organic compounds (VOC). The highest concentrations generally occur during the wa rm season\, when ozone production tends to be limited by the availability of NOx\, with the exception of some urban areas with high NOx emissions. I mplementation of effective emission control programs requires knowledge of the sensitivity of ground-level ozone in a particular metropolitan area t o NOx versus VOC emissions. Since the mid-1990s\, satellite instruments ha ve retrieved two chemical species (nitrogen dioxide and formaldehyde) that can serve as proxies for these precursor emissions. Following a brief int roduction to the approaches developed to diagnose ozone formation chemistr y from space\, I will highlight a recent study identifying long-term trend s in the ozone formation chemistry in several U.S. cities from satellite p roducts. Finally\, I will share some ongoing work connecting space-based a nd ground-level viewpoints during summer 2018 field campaigns in the New Y ork City and Baltimore/D.C. regions\, with an emphasis on changes in ozone sensitivity to its precursor emission on days when the National Ambient A ir Quality Standard for ozone is exceeded.\n\nSpeaker(s): Prof. Arlene Fio re \, \n\nVirtual: https://events.vtools.ieee.org/m/311195 LOCATION:Virtual: https://events.vtools.ieee.org/m/311195 ORGANIZER:fscire@icloud.com SEQUENCE:3 SUMMARY:Sensing air pollution from space: Detecting smog-forming chemistry URL;VALUE=URI:https://events.vtools.ieee.org/m/311195 X-ALT-DESC:Description: <br /><p>Controlling ground-level ozone smog has pr oven to be a persistent challenge in many U.S. air quality jurisdictions. &nbsp\;Ozone is a secondary air pollutant that forms through atmospheric c hemistry and depends non-linearly on precursor emissions of nitrogen oxide s (NO<sub>x</sub>) and volatile organic compounds (VOC).&nbsp\;&nbsp\;The highest concentrations generally occur during the warm season\, when ozone production tends to be limited by the availability of NOx\, with the exce ption of some urban areas with high NO<sub>x</sub>&nbsp\;emissions.&nbsp\; &nbsp\;Implementation of effective emission control programs requires know ledge of the sensitivity of ground-level ozone in a particular metropolita n area to NO<sub>x&nbsp\;</sub>versus VOC emissions.&nbsp\;&nbsp\;Since th e mid-1990s\, satellite instruments have retrieved two chemical species (n itrogen dioxide and formaldehyde) that can serve as proxies for these prec ursor emissions.&nbsp\;&nbsp\;Following a brief introduction to the approa ches developed to diagnose ozone formation chemistry from space\, I will h ighlight a recent study identifying long-term trends in the ozone formatio n chemistry in several U.S. cities from satellite products.&nbsp\; Finally \, I will share some ongoing work connecting space-based and ground-level viewpoints during summer 2018 field campaigns in the New York City and Bal timore/D.C. regions\, with an emphasis on changes in ozone sensitivity to its precursor emission on days when the National Ambient Air Quality Stand ard for ozone is exceeded.&nbsp\;</p>\n<p>&nbsp\;</p> END:VEVENT END:VCALENDAR