Spatial and temporal variability of sea ice in the southern Beaufort Sea and Amundsen Gulf: 1980-2004

R. J. Galley, E. Key, D. G. Barber, B Hwang, J. K. Ehn

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Changing extent, location, and motion of the Arctic perennial pack affect the annual evolution of seasonal ice zones. Canadian Ice Service digital ice charts covering the southern Beaufort Sea and Amundsen Gulf are used to illustrate summer and winter conditions and trends between 1980 and 2004 for several sea ice stages of development. Results illustrate average sea ice conditions within the region in summer and winter for predominant sea ice types and changes in the relative concentration of sea ice types in summer and winter. In summer, a trend toward increased old sea ice concentration occurred near the mouth of Amundsen Gulf, with a trend toward decreasing summer first-year sea ice farther west. In winter, increasing thick first-year sea ice extent appears to be replacing young sea ice within the flaw lead system in the region. The dynamically driven breakup of sea ice in spring in the Amundsen Gulf is a highly variable event taking anywhere between 2 and 22 weeks to completely remove ice from the gulf. The timing and duration of the open water season depends upon the extent and timing of old ice influx. Freezeup occurs very quickly, proceeding from west to east with little temporal variability. The results of this paper are used to set the context for the Canadian Arctic Shelf Exchange Study (CASES) in terms of sea ice dynamic and thermodynamic processes.

LanguageEnglish
Article numberC05S95
JournalJournal of Geophysical Research: Oceans
Volume113
Issue numberC5
DOIs
Publication statusPublished - 8 May 2008
Externally publishedYes

Fingerprint

Beaufort Sea (North America)
Beaufort Sea
Sea ice
sea ice
gulfs
ice
Ice
summer
winter
trends
time measurement
sea
gulf
Springs (water)
Arctic region
mouth
charts
shelves
open water
coverings

Cite this

@article{ae332aabe7504ea385681d0b8a76a3b3,
title = "Spatial and temporal variability of sea ice in the southern Beaufort Sea and Amundsen Gulf: 1980-2004",
abstract = "Changing extent, location, and motion of the Arctic perennial pack affect the annual evolution of seasonal ice zones. Canadian Ice Service digital ice charts covering the southern Beaufort Sea and Amundsen Gulf are used to illustrate summer and winter conditions and trends between 1980 and 2004 for several sea ice stages of development. Results illustrate average sea ice conditions within the region in summer and winter for predominant sea ice types and changes in the relative concentration of sea ice types in summer and winter. In summer, a trend toward increased old sea ice concentration occurred near the mouth of Amundsen Gulf, with a trend toward decreasing summer first-year sea ice farther west. In winter, increasing thick first-year sea ice extent appears to be replacing young sea ice within the flaw lead system in the region. The dynamically driven breakup of sea ice in spring in the Amundsen Gulf is a highly variable event taking anywhere between 2 and 22 weeks to completely remove ice from the gulf. The timing and duration of the open water season depends upon the extent and timing of old ice influx. Freezeup occurs very quickly, proceeding from west to east with little temporal variability. The results of this paper are used to set the context for the Canadian Arctic Shelf Exchange Study (CASES) in terms of sea ice dynamic and thermodynamic processes.",
author = "Galley, {R. J.} and E. Key and Barber, {D. G.} and B Hwang and Ehn, {J. K.}",
year = "2008",
month = "5",
day = "8",
doi = "10.1029/2007JC004553",
language = "English",
volume = "113",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "C5",

}

Spatial and temporal variability of sea ice in the southern Beaufort Sea and Amundsen Gulf : 1980-2004. / Galley, R. J.; Key, E.; Barber, D. G.; Hwang, B; Ehn, J. K.

In: Journal of Geophysical Research: Oceans, Vol. 113, No. C5, C05S95, 08.05.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spatial and temporal variability of sea ice in the southern Beaufort Sea and Amundsen Gulf

T2 - Journal of Geophysical Research

AU - Galley, R. J.

AU - Key, E.

AU - Barber, D. G.

AU - Hwang, B

AU - Ehn, J. K.

PY - 2008/5/8

Y1 - 2008/5/8

N2 - Changing extent, location, and motion of the Arctic perennial pack affect the annual evolution of seasonal ice zones. Canadian Ice Service digital ice charts covering the southern Beaufort Sea and Amundsen Gulf are used to illustrate summer and winter conditions and trends between 1980 and 2004 for several sea ice stages of development. Results illustrate average sea ice conditions within the region in summer and winter for predominant sea ice types and changes in the relative concentration of sea ice types in summer and winter. In summer, a trend toward increased old sea ice concentration occurred near the mouth of Amundsen Gulf, with a trend toward decreasing summer first-year sea ice farther west. In winter, increasing thick first-year sea ice extent appears to be replacing young sea ice within the flaw lead system in the region. The dynamically driven breakup of sea ice in spring in the Amundsen Gulf is a highly variable event taking anywhere between 2 and 22 weeks to completely remove ice from the gulf. The timing and duration of the open water season depends upon the extent and timing of old ice influx. Freezeup occurs very quickly, proceeding from west to east with little temporal variability. The results of this paper are used to set the context for the Canadian Arctic Shelf Exchange Study (CASES) in terms of sea ice dynamic and thermodynamic processes.

AB - Changing extent, location, and motion of the Arctic perennial pack affect the annual evolution of seasonal ice zones. Canadian Ice Service digital ice charts covering the southern Beaufort Sea and Amundsen Gulf are used to illustrate summer and winter conditions and trends between 1980 and 2004 for several sea ice stages of development. Results illustrate average sea ice conditions within the region in summer and winter for predominant sea ice types and changes in the relative concentration of sea ice types in summer and winter. In summer, a trend toward increased old sea ice concentration occurred near the mouth of Amundsen Gulf, with a trend toward decreasing summer first-year sea ice farther west. In winter, increasing thick first-year sea ice extent appears to be replacing young sea ice within the flaw lead system in the region. The dynamically driven breakup of sea ice in spring in the Amundsen Gulf is a highly variable event taking anywhere between 2 and 22 weeks to completely remove ice from the gulf. The timing and duration of the open water season depends upon the extent and timing of old ice influx. Freezeup occurs very quickly, proceeding from west to east with little temporal variability. The results of this paper are used to set the context for the Canadian Arctic Shelf Exchange Study (CASES) in terms of sea ice dynamic and thermodynamic processes.

UR - http://www.scopus.com/inward/record.url?scp=69049098059&partnerID=8YFLogxK

U2 - 10.1029/2007JC004553

DO - 10.1029/2007JC004553

M3 - Article

VL - 113

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - C5

M1 - C05S95

ER -