The influences of atmospheric half-yearly cycle on the sea ice extent in the Antarctic

Journal Article · Fri Jun 15 00:00:00 EDT 1990 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JC095iC06p09497· OSTI ID:5085383

Enomoto, Hiroyuki; Ohmura, Atsumu ^[1]

---

1. Swiss Federal Inst. of Tech., Zurich (Switzerland)

The relationship between sea ice and weather, one of the least known components of the climatic system, could be an important factor for the climate of high latitudes. The annual cycle of the sea ice extent is characterized by a asymmetric development, with the sea ice area slowly advancing toward the equator in the winter and rapidly retreating in summer. In this study, the seasonal asymmetric behavior of ice extent and the changes in sea ice concentration are shown to be linked to the atmospheric convergence line (ACL) around Antarctica. It is found that the relative positions of the ACL characterized by the half-year cycle exert a strong influence upon the mean movement of the sea ice. It is also observed from the investigations of the areal concentration prior to the sea ice retreat is needed for a rapid retreat.

• OSTI ID: 5085383
• Journal Information: Journal of Geophysical Research; (United States), Vol. 95:C6; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ANTARCTIC REGIONS
ATMOSPHERIC CIRCULATION
ICE
DISTRIBUTION
CLIMATES
CORRELATIONS
ECOLOGICAL CONCENTRATION
LATITUDE EFFECT
SATELLITES
SEAS
SEASONAL VARIATIONS
WEATHER
WIND
GEOGRAPHICAL VARIATIONS
POLAR REGIONS
SURFACE WATERS
VARIATIONS
540310* - Environment
Aquatic- Basic Studies- (1990-)