Recent Slowdown in the Decline of Arctic Sea Ice Volume Under Increasingly Warm Atmospheric and Oceanic Conditions

被引：17

作者：

Zhang, Jinlun ^{[1
]}

机构：

[1] Univ Washington, Appl Phys Lab, Polar Sci Ctr, Seattle, WA 98105 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 18期

关键词：

Arctic; sea ice; Arctic sea ice volume; sea ice export and growth; open water creation; CrySat2 sea ice thickness; THICKNESS DISTRIBUTION; MODEL;

D O I：

10.1029/2021GL094780

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A model study shows that the decline of Arctic sea ice volume (SIV) slows down during 2007-2020 with increasingly warm atmospheric and oceanic conditions. The slowdown of the SIV decline is because the decrease in ice export from the Arctic exceeds the decrease in net ice production within the Arctic. The relatively strong decrease in ice export occurs when the increase in ice motion is lower than the decrease in SIV. The relatively weak decrease in net ice production is due to strong increases in ice growth as thinner ice grows faster than thicker ice under freezing conditions. The ice growth increases are closely correlated with and benefit from increases in open water creation caused by enhanced ice divergence and shear as thinner ice is easier to deform.

引用

页数：10