‘Unprecedented’ ice mass gain over Antarctic sheet between 2021 & 2022, outpaced mass loss

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Antarctica ice mass gain 2023
‘Unprecedented’ ice mass gain over Antarctic sheet between 2021 & 2022, outpaced mass loss

The information below is the abstract from a scientific paper published November 4th 2023 that has yet to receive much, if any, mainstream coverage – unsurprisingly – however the conclusion of their findings are stated fairly clearly:

The Antarctic Ice Sheet (AIS) is susceptible to global climate change, and its mass loss has been 92 ± 18 Gt/yr between 1992 and 2020. Given the current intensive global warming, we investigate the AIS mass changes from January 2003 to December 2022, using the newly released satellite gravimetry and atmospheric datasets.

The results show that the continuous mass loss in the AIS between 2003 and 2020 was 141.8 ± 55.6 Gt/yr. However, the AIS showed a record-breaking mass gain of 129.7 ± 69.6 Gt/yr between 2021 and 2022. During this period, the mass gain over the East AIS and Antarctic Peninsula was unprecedented within the past two decades, and it outpaced the mass loss in the Amundsen sector of the West AIS from 2003 to 2022. Basin-scale analysis shows that the mass gain mainly occurred over Wilhelm II Land, Queen Mary Land, Wilkes Land, and the Antarctic Peninsula due to anomalously enhanced precipitation.

Further investigation reveals that during 2021-2022, a pair of symmetrically distributed high-low pressure systems, located at approximately 120°W and 60°E in the Southern Ocean, drove the observed abnormal precipitation and mass accumulation. [Full study: Environmental Research Letter]

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1 Comment

  1. This is unverifiable. No one is allowed to the ice walls. Not many people are allowed but in certain tour areas. The narrative about this is kinda like reading a fictional story book

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