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  A Pronounced Spike in Ocean Productivity Triggered by the Chicxulub Impact

Brugger, J., Feulner, G., Hofmann, M., Petri, S. (2021): A Pronounced Spike in Ocean Productivity Triggered by the Chicxulub Impact. - Geophysical Research Letters, 48, 12, e2020GL092260.
https://doi.org/10.1029/2020GL092260

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 Creators:
Brugger, Julia1, Author              
Feulner, Georg1, Author              
Hofmann, Matthias1, Author              
Petri, Stefan1, Author              
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: There is increasing evidence linking the mass-extinction event at the Cretaceous-Paleogene boundary to an asteroid impact near Chicxulub, Mexico. Here we use model simulations to explore the combined effect of sulfate aerosols, carbon dioxide and dust from the impact on the oceans and the marine biosphere in the immediate aftermath of the impact. We find a strong temperature decrease, a brief algal bloom caused by nutrients from both the deep ocean and the projectile, and moderate surface ocean acidification. Comparing the modeled longer-term post-impact warming and changes in carbon isotopes with empirical evidence points to a substantial release of carbon from the terrestrial biosphere. Overall, our results shed light on the decades to centuries after the Chicxulub impact which are difficult to resolve with proxy data.

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Language(s): eng - English
 Dates: 2020-12-232021-05-262021-06-082021-06-17
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: PIKDOMAIN: RD1 - Earth System Analysis
Organisational keyword: RD1 - Earth System Analysis
MDB-ID: yes - 3194
Working Group: Earth System Modes of Operation
Research topic keyword: Paleoclimate
Regional keyword: Global
Model / method: CLIMBER
DOI: 10.1029/2020GL092260
OATYPE: Hybrid - DEAL Wiley
 Degree: -

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Grant ID : 01LC1501A-H
Funding program : -
Funding organization : Bundesministerium für Bildung und Forschung (BMBF)

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Title: Geophysical Research Letters
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 48 (12) Sequence Number: e2020GL092260 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals182
Publisher: Wiley