Climate and Energy Exchange on a Sub-Polar Ice Cap in Summer. Part B.  Wind- and Temperature-Field in the Low Layer on the Top Plateau of the Ice Cap,

Holmgren, Bjoern

Climate and Energy Exchange on a Sub-Polar Ice Cap in Summer. Part B. Wind- and Temperature-Field in the Low Layer on the Top Plateau of the Ice Cap,

Active / Technical Report | Accession Number: AD0721486 |

Abstract:

Observations of the vertical variation of wind speed in near-neutral stratifications show an increase of the roughness parameter z sub 0 from about 0.00005 to 0.001 m when the wind speed at the 5 m level decreases from 6 - 7 msec to 2 - 3 msec. The increase of z sub 0 is suggested to be related to the flow conditions at the rear of the snow dunes. Snow dunes were characteristic features of the surface relief in the observation area. Possible causes of the observed profile features, especially the influence of the local conditions, are discussed. Author

Author(s):

Holmgren, Bjoern

Author Organization(s):

ARCTIC INST OF NORTH AMERICA WASHINGTON D C

Supplementary Note:

Report of Devon Island Expedition 1961-1963. Pub. as Uppsala Univ. (Sweden). Meteorologiska Institutionen. Meddelande-108. See also Part C, AD-721 487.

Pagination:

0047

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Contract/Grant Number(s):

Nonr-1138(01)

Subject Terms

Communities of Interest:

No COI(s) Identified

Descriptor(s):

(*CLIMATE, ARCTIC REGIONS), (*WIND, MEASUREMENT), MICROMETEOROLOGY, SNOW, GLACIERS, ATMOSPHERIC TEMPERATURE, CANADA

Field(s)/Group(s):

Meteorology

Keyword(s):

DEVON ISLAND

Report Date:

1970 Jan 01