Form Approved
REPORT DOCUMENTATION PAGE
OMB No. 0704-0188
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1. AGENCY USE ONLY (Leave blank)
2. REPORT DATE
3. REPORT TYPE AND DATES COVERED
June 1996
4. TITLE AND SUBTITLE
5. FUNDING NUMBERS
The Atmospheric Boundary Layer Over Polar Marine Surfaces
6. AUTHORS
Edgar L Andreas
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
8. PERFORMING ORGANIZATION
REPORT NUMBER
U.S. Army Cold Regions Research and Engineering Laboratory
72 Lyme Road
Monograph 96-2
Hanover, New Hampshire 03755-1290
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSORING/MONITORING
AGENCY REPORT NUMBER
National Science Foundation
and
Office of the Chief of Engineers
Arlington, Virginia 22230
Washington, DC 20314-1000
11. SUPPLEMENTARY NOTES
For conversion of SI units to non-SI units of measurement consult Standard Practice for Use of the International System of Units (SI),
ASTM Standard E380-93, published by the American Society for Testing and Materials, 1916 Race St., Philadelphia, Pa. 19103.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
12b. DISTRIBUTION CODE
Approved for public release; distribution is unlimited.
Available from NTIS, Springfield, Virginia 22161.
13. ABSTRACT (Maximum 200 words)
The Atmospheric Boundary Layer (ABL) over polar marine surfaces is, in ways, simpler and, in other ways, more com-
plex than ABLs in other environments. It is simpler because topographic effects are rarely a concern, the surface is fairly
homogeneous, and roughness lengths over sea ice and the ocean are much smaller than they are over land. It is complex
because the stratification is usually stable, and stable ABLs have not yielded to quantification as readily as convective
ABLs have. This report reviews some of these characteristics of ABLs over polar marine surfaces. The ABL, by defini-
tion, is the turbulent layer between the Earth's surface and the (generally) nonturbulent free atmosphere. Hence, the em-
phasis is on turbulence processes--in particular, the turbulent transfer of momentum and sensible and latent heat over sea
ice. As such, this report reviews both the theoretical and observational bases for our understanding of the mean structure
of the ABL. Understanding this structure then allows predicting the turbulent surface fluxes of momentum and sensible
and latent heat.
14. SUBJECT TERMS
15. NUMBER OF PAGES
45
Airseaice interactions
Cold regions
Polar meteorology
16. PRICE CODE
Atmospheric boundary layer
Polar marine surfaces
Turbulence
17. SECURITY CLASSIFICATION
18. SECURITY CLASSIFICATION
19. SECURITY CLASSIFICATION
20. LIMITATION OF ABSTRACT
OF REPORT
OF THIS PAGE
OF ABSTRACT
UNCLASSIFIED
UNCLASSIFIED
UNCLASSIFIED
UL
Standard Form 298 (Rev. 2-89)
NSN 7540-01-280-5500
Prescribed by ANSI Std. Z39-18
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