Major Differences in Regional Climate Impact Between High- and Low-Latitude Volcanic Eruptions
(2021) In Geophysical Research Letters 48(8).- Abstract
Major low-latitude volcanic eruptions cool Earth’s climate, and can lead to a positive phase of the North Atlantic Oscillation (NAO) during winter. However, the question of the climate and circulation impact of Northern Hemisphere high-latitude eruptions has received less attention. Here we show that, contrary to low-latitude eruptions, the response to high-latitude eruptions can be associated with negative NAO both winter and summer. We furthermore demonstrate that also the response to low-latitude eruptions prevails during summer months, and corroborates previous findings of an extended impact on winter circulation lasting up to 5 years. Our analysis of novel climate field reconstructions supports this extended response, with the... (More)
Major low-latitude volcanic eruptions cool Earth’s climate, and can lead to a positive phase of the North Atlantic Oscillation (NAO) during winter. However, the question of the climate and circulation impact of Northern Hemisphere high-latitude eruptions has received less attention. Here we show that, contrary to low-latitude eruptions, the response to high-latitude eruptions can be associated with negative NAO both winter and summer. We furthermore demonstrate that also the response to low-latitude eruptions prevails during summer months, and corroborates previous findings of an extended impact on winter circulation lasting up to 5 years. Our analysis of novel climate field reconstructions supports this extended response, with the addition of showing a positive NAO during summer after low-latitude eruptions. The differences in the effect of high- and low-latitude eruptions on atmospheric circulation and regional temperature provide important insights for the understanding of past and future climate changes in response to volcanic forcing.
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- author
- Sjolte, Jesper LU ; Adolphi, Florian LU ; Guðlaugsdòttir, Hera and Muscheler, Raimund LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- North Atlantic Oscillation, regional climate, seasonal climate reconstructions, volcanic eruptions
- in
- Geophysical Research Letters
- volume
- 48
- issue
- 8
- article number
- e2020GL092017
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- scopus:85105019322
- ISSN
- 0094-8276
- DOI
- 10.1029/2020GL092017
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This work was supported by the Swedish Research Council (grant DNR2011‐5418 & DNR2013‐8421 to R. Muscheler), the Crafoord Foundation and the strategic research program of ModEling the Regional and Global Earth system (MERGE) hosted by the Faculty of Science at Lund University. F. Adolphi was supported by the Swedish Research Council (grant DNR 2016‐00218 to F. Adolphi). Publisher Copyright: © 2021. The Authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
- id
- c8d5e901-2349-4e19-b865-e05fcc46cf8e
- date added to LUP
- 2021-05-10 12:07:33
- date last changed
- 2022-04-27 01:51:57
@article{c8d5e901-2349-4e19-b865-e05fcc46cf8e, abstract = {{<p>Major low-latitude volcanic eruptions cool Earth’s climate, and can lead to a positive phase of the North Atlantic Oscillation (NAO) during winter. However, the question of the climate and circulation impact of Northern Hemisphere high-latitude eruptions has received less attention. Here we show that, contrary to low-latitude eruptions, the response to high-latitude eruptions can be associated with negative NAO both winter and summer. We furthermore demonstrate that also the response to low-latitude eruptions prevails during summer months, and corroborates previous findings of an extended impact on winter circulation lasting up to 5 years. Our analysis of novel climate field reconstructions supports this extended response, with the addition of showing a positive NAO during summer after low-latitude eruptions. The differences in the effect of high- and low-latitude eruptions on atmospheric circulation and regional temperature provide important insights for the understanding of past and future climate changes in response to volcanic forcing.</p>}}, author = {{Sjolte, Jesper and Adolphi, Florian and Guðlaugsdòttir, Hera and Muscheler, Raimund}}, issn = {{0094-8276}}, keywords = {{North Atlantic Oscillation; regional climate; seasonal climate reconstructions; volcanic eruptions}}, language = {{eng}}, number = {{8}}, publisher = {{American Geophysical Union (AGU)}}, series = {{Geophysical Research Letters}}, title = {{Major Differences in Regional Climate Impact Between High- and Low-Latitude Volcanic Eruptions}}, url = {{http://dx.doi.org/10.1029/2020GL092017}}, doi = {{10.1029/2020GL092017}}, volume = {{48}}, year = {{2021}}, }