Open AccessThe relationship between summer sea ice extent in Hudson Bay and the Arctic Ocean via the atmospheric circulation
Author(s) -
Ogi Masayo,
Barber David G.,
Rysgaard Søren
Publication year - 2016
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.709
Subject(s) - bay , atmospheric circulation , climatology , arctic , environmental science , sea ice , oceanography , arctic sea ice decline , arctic ice pack , latitude , arctic dipole anomaly , ocean current , atmospheric sciences , geology , antarctic sea ice , geodesy
Abstract The trends and interannual variations of summer sea ice extents ( SIEs ) in both Hudson Bay and the Arctic Ocean are investigated in association with variations in atmospheric circulation and air temperature. The summer SIE variabilities of both Hudson Bay and the Arctic Ocean are well correlated and have a strong negative trend. The negative SIE trends are associated with a summer atmospheric circulation pattern that is characterized by positive anomalies over the Arctic Ocean and negative anomalies over mid‐latitudes. The trends are also connected with warm air temperatures over mid‐ and high‐latitudes. The atmospheric circulation and air temperature regressed on the summer SIEs in both Hudson Bay and the Arctic Ocean are quite similar to these trend patterns. On the other hand, the year‐to‐year variations of the detrended summer SIEs in both Hudson Bay and the Arctic Ocean are not correlated. The summer atmospheric circulation and air temperature over the Arctic Ocean have contributed to the detrended summer Arctic Ocean SIE . In contrast, the detrended summer Hudson Bay SIE is controlled by atmospheric circulation and air temperature in the previous spring.