Tree Rings and Temperatures
Tree Rings and Temperatures
Tree Rings and Temperatures
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Segment length curse<br />
Long chronologies often built from<br />
shorter series with a mean<br />
“segment” length much shorter<br />
than entire chronology<br />
This creates difficulties in<br />
comparing long term trends as<br />
low frequency climate signals may<br />
be removed by detrending<br />
Maximum frequency that can be<br />
recovered is about one third of the<br />
mean series length<br />
Average age of core segments in a 1500 yr long chronology<br />
from Northern Sc<strong>and</strong>inavia (Briffa et al., 1992)<br />
2.0<br />
1.5<br />
1.0<br />
0.5<br />
0.0<br />
900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900<br />
0<br />
2000<br />
L<strong>and</strong>slide <strong>and</strong> Trashline Samples<br />
L<strong>and</strong>slide chronology SW Yukon 913-2002 A.D.<br />
Calendar Year<br />
YLL0 4 W<br />
YLL10 E<br />
KLX11A<br />
KLX04A<br />
L0007W<br />
L9 9 3 9 N<br />
L9 9 3 4 N<br />
YLL14 N<br />
YLL16 N<br />
L9917W<br />
YLL15 S<br />
YLL62 A<br />
YLL58 C<br />
YLL72 A<br />
YLL64 A<br />
YLL6 1E<br />
YLL69 A<br />
YLL7 1B<br />
YLL63 B<br />
YLL5 1A<br />
900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000<br />
Sam ples<br />
300<br />
250<br />
200<br />
150<br />
100<br />
50
Change language