| Main Title |
ENAMAP-1A long-term SO2 and sulfate air pollution model : refinements of transformation and deposition mechanisms / |
| Author |
Mayerhofer, P. M. ;
Endlich, R. M. ;
Cantrell, B. E. ;
Brodzinsky, R. ;
Bhumralkar, C. M. ;
|
| Other Authors |
|
| CORP Author |
SRI International, Menlo Park, CA.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, |
| Year Published |
1982 |
| Report Number |
EPA-600/3-82-063; EPA-68-02-3424; SRI-2003 |
| Stock Number |
PB82-237017 |
| OCLC Number |
703639161 |
| Subjects |
Sulfur dioxide ;
Sulfates ;
Air--Pollution--United States--Measurement ;
Air quality management--United States--Data processing
|
| Additional Subjects |
Air pollution ;
Mathematical models ;
Sulfur dioxide ;
Sulfates ;
Transport properties ;
Concentration(Composition) ;
Information systems ;
Depositions ;
Tables(Data) ;
Graphs(Charts) ;
ENAMAP-1A model ;
Air quality
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-600/3-82-063 |
|
Research Triangle Park Library/RTP, NC |
02/28/2011 |
| NTIS |
PB82-237017 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vii, 88 p. : maps, charts ; 28 cm. |
| Abstract |
The ENAMAP-1 model for long-range air pollution transport has been modified in several ways to produce a newer version, ENAMAP-1A. The geographic region of the modeled domain has been increased to include southeastern Canada, and the meteorological and emission data for this area have been added to the U.S. data base. The transformation rate for SO2 to SO4(-2) and the deposition rates of SO2 and SO4(-2) have been updated. In ENAMAP-1 these rates are all constants; in ENAMAP-1A they are variable in space and time. The transformation rate has been made dependent on the amount of sunshine (i.e. a function of latitude and season) and is about twice as large as the previous rate. In ENAMAP-1A the dry deposition rate has been made dependent on the type of underlying terrain and vegetation, on thermal stability in the boundary layer, and on time of day. Wet deposition is treated as a function of rainfall rate and cloud type (convective, warm process, or Bergeron process). Boundary exchanges of SO2 and SO4(-2) have been computed for each of 41 states (or provinces) and also for 12 especially sensitive areas of special interest such as parks. The computations show the history of pollution from emission to deposition and are documented in the form of maps and tables. In contrast to ENAMAP-1 computations, ENAMAP-1A computations for January and August 1977 have much larger amounts of SO4(-2) in the form of airborne concentration and deposition, while the amount of SO2 deposition is decreased. |
| Notes |
Project officer: Terru L. Clark. Prepared by SRI International. "February 1982." Includes bibliographical references (p. 45) "EPA-600/3-82-063." |
| Place Published |
Research Triangle Park, NC |
| Access Notes |
Also available online. Location last verified 12/14/10. |
| Corporate Au Added Ent |
Environmental Sciences Research Laboratory. |
| Alternate Title |
ENAMAP-1A long-term SO2 and sulfate air pollution model : refinements of transformation and deposition mechanisms / |
| NTIS Title Notes |
Final rept. 17 Jul 80-31 Jul 81. |
| PUB Date Free Form |
May 82 |
| Category Codes |
13B; 68A |
| NTIS Prices |
PC A05/MF A01 |
| Primary Description |
600/09 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| Control Number |
323820139 |
| OCLC Time Stamp |
20110224153624 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01342nam 2200337Ka 45020 |
