The amplifying influence of increased ocean stratification on a future year without a summer

AMS Citation:
Fasullo, J. T., R. A. Tomas, S. Stevenson, B. Otto-Bliesner, E. C. Brady, and E. Wahl, 2017: The amplifying influence of increased ocean stratification on a future year without a summer. Nature Communications, 8, 1236, doi:10.1038/s41467-017-01302-z.
Date:2017-12-31
Resource Type:article
Title:The amplifying influence of increased ocean stratification on a future year without a summer
Abstract: In 1816, the coldest summer of the past two centuries was observed over northeastern North America and western Europe. This so-called Year Without a Summer (YWAS) has been widely attributed to the 1815 eruption of Indonesia's Mt. Tambora and was concurrent with agricultural failures and famines worldwide. To understand the potential impacts of a similar future eruption, a thorough physical understanding of the YWAS is crucial. Climate model simulations of both the 1815 Tambora eruption and a hypothetical analogous future eruption are examined, the latter occurring in 2085 assuming a business-as-usual climate scenario. Here, we show that the 1815 eruption drove strong responses in both the ocean and cryo-sphere that were fundamental to driving the YWAS. Through modulation of ocean stratification and near-surface winds, global warming contributes to an amplified surface climate response. Limitations in using major volcanic eruptions as a constraint on cloud feedbacks are also found.
Peer Review:Refereed
Copyright Information:Copyright 2017 Author(s). Published under license by the Nature Publishing Group.
OpenSky citable URL: ark:/85065/d7x92dvj
Publisher's Version: 10.1038/s41467-017-01302-z
Author(s):
  • John T. Fasullo - NCAR/UCAR
  • Robert A. Tomas - NCAR/UCAR
  • Samantha Stevenson - NCAR/UCAR
  • Bette Otto-Bliesner - NCAR/UCAR
  • Esther C. Brady - NCAR/UCAR
  • E. Wahl
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