||Study of the subarctic heat island at Fairbanks, Alaska /
Bowling, S. A. ;
Benson., C. S.
||Alaska Univ., College. Geophysical Inst.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
|| Environmental Sciences Research Laboratory, Office of Research and Development, United States Environmental Protection Agency,
Urban heat island--Alaska--Fairbanks. ;
Fairbanks (Alaska)--Climate. ;
Weather modification ;
Temperature inversions ;
Urban areas ;
Steady state ;
Atmospheric temperature ;
Wind velocity ;
Arctic regions ;
Air pollution ;
Heat transfer ;
Surface roughness ;
Mathematical models ;
Urban heat islands ;
Inadvertent weather modification
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xviii, 150 pages : illustrations ; 28 cm.
The heat island associated with the City of Fairbanks, Alaska was studied as a means of isolating the effects of self-heating modified radiative transfer from other causes of heat islands. Minimal winter insolation virtually eliminated the effects of variable albedo and the daily temperature cycle; snow cover and dormant vegetation made differences in evapotranspiration unimportant, and very low wind speeds minimized the effect of surface roughness. The observed steady-state heat island under clear skies and low wind speeds was around 10C, with transient values reaching 14C. This high value is probably due to the extremely steep ground inversions known to exist in Fairbanks, as the heat island intensity correlated well with the strength of the inversion between 2 and 60 meters elevation. The winter value, applied in a simple model of a heat island over a conducting and radiating city, gave realistic heat island values with wind speeds under 1 m/sec.
Includes bibliographical references (pages 147-149). Microfiche.