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Sea ice across Dansgaard-Oeschger events in Greenland

Total Cost €


EC-Contrib. €






 SEADOG project word cloud

Explore the words cloud of the SEADOG project. It provides you a very rough idea of what is the project "SEADOG" about.

abrupt    retreat    deg    linked    interstadial    model    modeling    rapid    sea    greenland    ocean    chemistry    closely    arctic    analysed    causation    punctuated    last    cooling    aerosol    stadial    northern    separate    relevance    proxies    cores    methane    core    output    successfully    glacial    sulphonic    climate    suggest    sheet    positively    acid    tests    onset    scenarios    phenomenon    10    hemisphere    gradual    palaeoclimatic    cambridge    cools    relative    magnitude    ice    uncertain    changing    variability    atmospheric    coupled    msa    events    warm    oeschger    obtain    spatial    na    played    millennial    interfaced    feedback    combines    salt    atmosphere    dansgaard    mechanism    boundary    temperature    underlying    responsible    meteorology    marine    reproduce    indication    transport    gross    recorded    sensitivity    tomcat    cool    deposition    consistent    evolution    cycles    antarctic    temporal    followed    records    influence    data    recurring    run    controls   

Project "SEADOG" data sheet

The following table provides information about the project.


Organization address
postcode: CB2 1TN

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Project website
 Total cost 183˙454 €
 EC max contribution 183˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-RI
 Starting year 2015
 Duration (year-month-day) from 2015-10-01   to  2017-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The Last Glacial climate of the Northern Hemisphere was punctuated by abrupt millennial scale changes called Dansgaard-Oeschger (DO) events, clearly recorded by Greenland ice core temperature proxies. The underlying mechanism responsible for the recurring cycles of ~10°C rapid increase, followed by gradual cooling, remains uncertain. Many studies suggest that large changes in sea ice extent played a major role in their causation. Sea ice is closely linked to climate; changes in sea ice extent feedback positively on Arctic temperature—a phenomenon of great relevance to the future of Arctic sea ice in our changing climate. This project combines Greenland ice core chemistry records with atmospheric chemistry transport modeling in order to constrain Arctic sea ice variability across DO events. Records of sea salt (Na), and methane sulphonic acid (MSA), from four ice cores will be analysed for spatial and temporal variability across DO events. The controls on marine aerosol deposition over the Greenland Ice Sheet will be investigated using a atmospheric chemistry transport model, Cambridge p-TOMCAT, which has been successfully deployed for the Antarctic. The relative influence of sea ice and other factors e.g., meteorology, on ice core chemistry variability will be assessed using sensitivity tests that will also provide an indication of the gross sea ice changes in required to reproduce the significant sea salt changes recorded in ice cores. Furthermore, an atmospheric chemistry transport model, that can be interfaced with fully coupled ocean-atmosphere climate model output, will be optimised according to our findings. This model will be run with palaeoclimatic boundary conditions to obtain scenarios of sea ice change consistent with the ice core chemistry data. Separate tests will constrain the magnitude of sea ice retreat at the onset of DO events and the temporal evolution of sea ice conditions as climate cools from warm interstadial to cool stadial conditions.


year authors and title journal last update
List of publications.
2018 Rachael H. Rhodes, Xin Yang, Eric W. Wolff
Sea Ice Versus Storms: What Controls Sea Salt in Arctic Ice Cores?
published pages: , ISSN: 0094-8276, DOI: 10.1029/2018GL077403
Geophysical Research Letters 2019-07-24
2017 Rachael H. Rhodes, Xin Yang, Eric W. Wolff, Joseph R. McConnell, Markus M. Frey
Sea ice as a source of sea salt aerosol to Greenland ice cores: a model-based study
published pages: 9417-9433, ISSN: 1680-7324, DOI: 10.5194/acp-17-9417-2017
Atmospheric Chemistry and Physics 17/15 2019-07-24
2017 Rachael H. Rhodes, Edward J. Brook, Joseph R. McConnell, Thomas Blunier, Louise C. Sime, Xavier Faïn, Robert Mulvaney
Atmospheric methane variability: Centennial-scale signals in the Last Glacial Period
published pages: 575-590, ISSN: 0886-6236, DOI: 10.1002/2016GB005570
Global Biogeochemical Cycles 31/3 2019-07-24

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