Snow Mass Recharge of the Greenland Ice Sheet Fueled by Intense Atmospheric River
Bailey, Hannah; Hubbard, Alun (2025-03-03)
Wiley-Blackwell
03.03.2025
Bailey, H., & Hubbard, A. (2025). Snow mass recharge of the Greenland ice sheet fueled by intense atmospheric river. Geophysical Research Letters, 52, e2024GL110121. https://doi.org/10.1029/2024GL110121
https://creativecommons.org/licenses/by/4.0/
© 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
© 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202503121996
https://urn.fi/URN:NBN:fi:oulu-202503121996
Tiivistelmä
Abstract
Atmospheric rivers (ARs) have been linked with extreme rainfall and melt events across the Greenland ice sheet (GrIS), accelerating its mass loss. However, the impact of AR-fueled snowfall has received less attention, partly due to limited empirical evidence. Here, we relate new firn core stratigraphy and isotopic analyses with glacio-meteorological data sets from SE Greenland to examine an intense AR in mid-March 2022. We demonstrate that the associated snowfall—up to 11.6 gigatons d−1—delayed summer melt onset by11-days and offset Greenland's 2022 net mass loss by 8%. Since 2010, our synoptic analysis reveals that snow accumulation across SE Greenland increased by 20 mm water equivalent a−1, driven by enhanced Atlantic cyclonicity. We find that the impact of ARs on the GrIS is not exclusively negative and their capacity to contribute mass recharge may become increasingly significant under ongoing Arctic amplification and predicted poleward intrusion of mid-latitude moisture.
Atmospheric rivers (ARs) have been linked with extreme rainfall and melt events across the Greenland ice sheet (GrIS), accelerating its mass loss. However, the impact of AR-fueled snowfall has received less attention, partly due to limited empirical evidence. Here, we relate new firn core stratigraphy and isotopic analyses with glacio-meteorological data sets from SE Greenland to examine an intense AR in mid-March 2022. We demonstrate that the associated snowfall—up to 11.6 gigatons d−1—delayed summer melt onset by11-days and offset Greenland's 2022 net mass loss by 8%. Since 2010, our synoptic analysis reveals that snow accumulation across SE Greenland increased by 20 mm water equivalent a−1, driven by enhanced Atlantic cyclonicity. We find that the impact of ARs on the GrIS is not exclusively negative and their capacity to contribute mass recharge may become increasingly significant under ongoing Arctic amplification and predicted poleward intrusion of mid-latitude moisture.
Kokoelmat
- Avoin saatavuus [38865]
Ellei muuten mainita, aineiston lisenssi on https://creativecommons.org/licenses/by/4.0/