Abstract
This paper presents a mechanistic, fully dynamic, internally mixed, sectional aerosol module, the UCD Aerosol Module, which evolves from the Aerosol Inorganic Model (AIM). The UCD Aerosol Module employs three gas-to-particle mass transport schemes, replacement, coupled and uncoupled, and simplified aerosol thermodynamics to predict gas-particle partitioning, aerosol phase state and water content efficiently and reasonably. Aerosol dynamics is integrated using an Asynchronous Time-Stepping (ATS) integration method, where different sized particles integrate with different time scales. CMAQ-UCD is an implementation of the UCD Aerosol Module in the CMAQ modeling system. With all of these features, CMAQ-UCD is designed to be a computationally efficient and scientifically sound air quality model that predicts particulate mass concentrations and size distributions over urban or regional scales for regulatory and scientific purposes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3166-3178 |
| Number of pages | 13 |
| Journal | Atmospheric Environment |
| Volume | 42 |
| Issue number | 13 |
| DOIs | |
| State | Published - Apr 2008 |
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Keywords
- Aerosols
- Air quality
- Particulate matter
- PM2.5
- Size distribution
- Thermodynamics
ASJC Scopus subject areas
- Atmospheric Science
- Environmental Science(all)
- Pollution
Cite this
Modeling urban and regional aerosols-Development of the UCD Aerosol Module and implementation in CMAQ model. / Zhang, K. Max; Wexler, Anthony S.
In: Atmospheric Environment, Vol. 42, No. 13, 04.2008, p. 3166-3178.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling urban and regional aerosols-Development of the UCD Aerosol Module and implementation in CMAQ model
AU - Zhang, K. Max
AU - Wexler, Anthony S.
PY - 2008/4
Y1 - 2008/4
N2 - This paper presents a mechanistic, fully dynamic, internally mixed, sectional aerosol module, the UCD Aerosol Module, which evolves from the Aerosol Inorganic Model (AIM). The UCD Aerosol Module employs three gas-to-particle mass transport schemes, replacement, coupled and uncoupled, and simplified aerosol thermodynamics to predict gas-particle partitioning, aerosol phase state and water content efficiently and reasonably. Aerosol dynamics is integrated using an Asynchronous Time-Stepping (ATS) integration method, where different sized particles integrate with different time scales. CMAQ-UCD is an implementation of the UCD Aerosol Module in the CMAQ modeling system. With all of these features, CMAQ-UCD is designed to be a computationally efficient and scientifically sound air quality model that predicts particulate mass concentrations and size distributions over urban or regional scales for regulatory and scientific purposes.
AB - This paper presents a mechanistic, fully dynamic, internally mixed, sectional aerosol module, the UCD Aerosol Module, which evolves from the Aerosol Inorganic Model (AIM). The UCD Aerosol Module employs three gas-to-particle mass transport schemes, replacement, coupled and uncoupled, and simplified aerosol thermodynamics to predict gas-particle partitioning, aerosol phase state and water content efficiently and reasonably. Aerosol dynamics is integrated using an Asynchronous Time-Stepping (ATS) integration method, where different sized particles integrate with different time scales. CMAQ-UCD is an implementation of the UCD Aerosol Module in the CMAQ modeling system. With all of these features, CMAQ-UCD is designed to be a computationally efficient and scientifically sound air quality model that predicts particulate mass concentrations and size distributions over urban or regional scales for regulatory and scientific purposes.
KW - Aerosols
KW - Air quality
KW - Particulate matter
KW - PM2.5
KW - Size distribution
KW - Thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=41949135571&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41949135571&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2007.12.052
DO - 10.1016/j.atmosenv.2007.12.052
M3 - Article
AN - SCOPUS:41949135571
VL - 42
SP - 3166
EP - 3178
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
IS - 13
ER -