Main Title |
Detection of Centripetal Heat-Island Circulations from Tower Data in St. Louis. |
Author |
Shreffler, Jack H. ;
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div. |
Year Published |
1978 |
Report Number |
EPA/600/J-78/124; |
Stock Number |
PB-298 522 |
Additional Subjects |
Atmospheric circulation ;
Urban areas ;
Wind velocity ;
Diurnal variations ;
Convection ;
Missouri ;
Regional Air Monitoring System ;
Heat islands ;
Centripetal acceleration ;
Saint Louis(Missouri) ;
Reprints
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-298 522 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
16p |
Abstract |
Hourly averaged meteorological data gathered by a 25-tower network about St. Louis during 1976 are used in a search for centripetal circulations generated by the urban heat island. Considering data collected when the network resultant speed was less than 1.5 m/s, two data classes of several hundred hours each are formed. One class is associated with weak heat islands, daytime hours, and convective instability, while the other class is associated with strong heat islands, nighttime hours, and extreme rural stability. Mean centripetal flows are clearly discernable from data of both classes, but the convergence is stronger for the flows associated with the weaker heat islands. This unexpected result is explained in terms of the ease with which sustained vertical motions can be generated over the city by the available forcing under different stability regimes. The detectability of the heat island influence diminishes very rapidly with increasing speed of the large-scale flow. |
Supplementary Notes |
Pub. in Jnl. Boundary-Layer Meteorology, v15 p229-242, 1978. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Detection of Centripetal Heat-Island Circulations from Tower Data in St. Louis. |
PUB Date Free Form |
5 May 78 |
Category Codes |
4B; 55B |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323765788 |
Origin |
NTIS |
Type |
CAT |