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Antarctic ice mass variations from 1979 to 2017 driven by anomalous precipitation accumulation

Earth Sciences

Antarctic ice mass variations from 1979 to 2017 driven by anomalous precipitation accumulation

B. Kim, K. Seo, et al.

This groundbreaking study by Byeong-Hoon Kim and colleagues reveals how precipitation significantly impacts Antarctic ice mass changes from 1979 to 2017. It uncovers the mechanisms behind the abrupt acceleration in ice mass loss around 2007, highlighting the essential role of the Southern Annular Mode in driving these changes.

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Playback language: English
Abstract
This study investigates Antarctic ice mass changes from 1979 to 2017, focusing on the contribution of precipitation. Accumulated precipitation explains most inter-annual anomalies of Antarctic ice mass change during the GRACE period (2003–2017). A bi-polar pattern of ice mass change is observed, driven by the Southern Annular Mode (SAM). The study concludes that the abrupt ice mass loss acceleration observed around 2007 is related to precipitation variations, and that ice discharge has accelerated steadily since 1992.
Publisher
Scientific Reports
Published On
Nov 23, 2020
Authors
Byeong-Hoon Kim, Ki-Weon Seo, Jooyoung Eom, Jianli Chen, Clark R. Wilson
Tags
Antarctic ice mass
precipitation
Southern Annular Mode
ice discharge
GRACE
inter-annual anomalies

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