| Main Title |
Partitioning of the Sulfate Budget into Gas and Aqueous-Phase Components in the Regional Acid Deposition Model (RADM). |
| Author |
McHenry, J. N. ;
Dennis, R. L. ;
|
| CORP Author |
National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;Computer Sciences Corp., Research Triangle Park, NC. Applied Technology Div.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
| Publisher |
Jan 91 |
| Year Published |
1991 |
| Report Number |
EPA-68-01 7365; EPA/600/A-92/033; |
| Stock Number |
PB92-152966 |
| Additional Subjects |
Acidification ;
Air pollution ;
Deposition ;
Mathematical models ;
Sulfates ;
Sulfur ;
Hydrogen peroxide ;
Oxidizers ;
Environmental transport ;
Atmospheric chemistry ;
Clouds(Meteorology) ;
Chemical reactions ;
Reprints ;
Sulfate Tracking Model ;
Regional Acid Deposition Model
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-152966 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
A diagnostic version of the RADM Engineering Model, called the Sulfate Tracking Model (STM), has been developed. Like other members of the RADM Engineering Model family (Chang et al., 1990; Binkowski, et al., 1990), the STM is a sulfur and hydrogen peroxide engineering version that makes use of chemical and oxidant (other than H2O2) fields precalculated in full RADM runs to predict atmospheric SO2, SO4(2-), and H2O2 transport, transformation, and deposition. The sulfur/H2O2 engineering models accurately reproduce RADM sulfur predictions through mathematical manipulation of the sulfur chemical dynamics, for a wide range of sulfur emissions scenarios. Hydrogen peroxide fields are calculated by making the RADM-generated OH and HO2 fields available to the STM's peroxide chemical solver, which replicates the RADM's peroxide chemical solver. Therefore, the STM dynamically tracks the influence of SO2 levels on H2O2 loss. Unique to this model is its capability of separating the complete SO4(2-) fields into constituents according to the chemical processes which created them. This permits a wide variety of diagnostic studies to be performed at low cost, aiding greatly in the authors understanding of how the RADM predicts the creation, transport, and deposition of sulfate. |
| Supplementary Notes |
Pub. in Joint Conference on Applications of Air Pollution with Air Waste Management Association, New Orleans, LA., January 14-18, 1991. See also PB90-252628 and PB91-119669. Prepared in cooperation with Computer Sciences Corp., Research Triangle Park, NC. Applied Technology Div. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. |
| NTIS Title Notes |
Conference rept. Jan 89-Sep 90. |
| Title Annotations |
Reprint: Partitioning of the Sulfate Budget into Gas and Aqueous-Phase Components in the Regional Acid Deposition Model (RADM). |
| Category Codes |
68A; 55E; 91A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
211524910 |
| Origin |
NTIS |
| Type |
CAT |
