The 8.2Kyr event Julia Tindall Freshwater hosing experiments Ron Kahana. The 8.2Kyr event. Introduction and motivation The 8.2Kyr event in data Cause of the event Modelling the 8.2Ka event using other models Modelling the 8.2Ka event using HadCM3L. The 8.2Ka event in Greenland ice cores.
The 8.2Kyr eventJulia TindallFreshwater hosing experiments Ron Kahana
Data from Greenland ice core
Figure from Alley and Ágústsdóttir 2005
The 8.2Kyr event globally?
From Thomas et al 2006
Summary of evidence for 8.2Ka event globally
With baseline flux of 0.172Sv
Without baseline flux
5Sv added over North Atlantic for 1 year
First 10 years of model run
show cooling over much of
the Northern hemisphere
however δ18O signal is more noisy.
First 10 years
Next 10 years
Last 20 years
(yr 57-yr 77)
(e.g. preflood=0.055Sv, flood=2.5Sv, routing=0.172Sv