Cooperative Institute for Research in Environmental Sciences

All day
 
 
Before 01
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
CSTPR Noontime Seminar: Paul Bowman

CSTPR Noontime Seminar: Paul Bowman

Ignorance Isn't Bliss: Why Historical Emitters Owe Compensation for Climate Change

by Paul Bowman, Center for Science and Technology Policy Research and Environmental Studies, CU Boulder

location

CSTPR Conference Room, 1333 Grandview Avenue

Event Type

CSTPR
2015-03-09
 
Analytical Chemistry Seminar: Shantanu Jathar

Analytical Chemistry Seminar: Shantanu Jathar

Jointly sponsored by the Department of Chemistry and Biochemistry, CIRES, and the Environmental Program

Secondary Organic Aerosol Modeling using the Statistical Oxidation Mode

Shantanu Jathar Colorado State University

Multi-generational gas-phase oxidation of organic vapors can influence the abundance, composition and properties of organic particulate matter or organic aerosol. Most air quality and climate models lack or include an ad hoc treatment of multi-generational oxidation. In this seminar, I will highlight our recent work where we coupled a semi-explicit multi-generational oxidation model for organics (fully constrained by experimental smog chamber data that includes both functionalization and fragmentation reactions) with a gas-phase chemical mechanism in a regional 3-D air quality model. The seminar will discuss results where we (a) investigated the role of multi-generational gas-phase chemistry on the mass, composition, volatility and oxidation state of SOA and (b) explored the influence of vapor wall-losses on ambient concentrations and properties of SOA. Based on those results, I will argue that 3-D models need to include (this or similar) multi-generational oxidation schemes to accurately describe the atmospheric evolution of OA in air quality and climate models.

location

CIRES Fellows Room, Ekeley S274 - University of Colorado Boulder, Boulder, CO 80309
2015-03-09