Time series of d18O and its LOMB spectrum. Numerical values are the
digitalization of Kluge et al., 2020, figure 5, 2.nd panel (say fig.5b).
The red line is the linear fit I camputed the Lomb spectrum from. The purple
line is a 3.rd order polynomial fit used to define a beginning
of the descending slope at about 2.7-2.9 Ka (=0.7-0.9 Kyr BCE, i.e. when the
greek written tradition begins with Homerus and the 2.8 Ka event, or <a
href="https://en.wikipedia.org/wiki/Bond_even" target=_blank>Bond
event #2</a> appears). It can be noted a milder 
transition than in Portugal around 1.1 Kyr BCE, the end of Bronze Age; also the
drop of temperature and the same sudden drop at 0.7 kyr BP
i.e. the beginning of the LIA is visible, as in figure 2 for the Alvados cave.
The 4.2 Ka events (Bond event #3) reaches its maximum at about 4.1 Ka here.