trace 2009 page 1 material regions thethi lura tomor (cuka partisan) macedonia greece montenegro...
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Page 1 TRACE 2009
Material
REGIONS
• Thethi
• Lura
• Tomor(Cuka Partisan)
MACEDONIA
GREECE
MONTENEGRO
KOSOVO
ALBANIA
ITALY
Tree sites (Pinus heldreichii)Historical material (P. heldreichii, P. nigra)
Thethi
Lura
KorçëTomor
Page 2 TRACE 2009
MaterialMaterial
Replication of the sites
• Thethi 1700-1900 m asl:– MSL 270– Mean age: 281
• Lura 1800-2000 m asl:– MSL 422– Mean age: 394
• C. Partisan 1800-2000 m asl:– MSL 298– Mean age: 308
n=24 radii
n=109 radii
n=60 radii
n=66 radii
n=17 radii
n=14 radii
n=16 radii
Page 3 TRACE 2009
First resultsFirst results
Correlation between sites
AT-AL: r=0.67
AL-AP: r=0.60
AP-AL: r=0.45
common period AD
1405 - 2008
AT1-AT2: r=0.31
AT1-AT3: r=0.43
AT2-AT3: r=0.54
AL1-AL2: r=0.57
AP1-AP2: r=0.61
common period AD
1451 - 2008
Page 4 TRACE 2009
First resultsFirst results
JJA Temperatures
JJA Precipitation
Broader Balkan Region - Climate data
• Temperature is quite homogeneous
• Precipitation is of localcharacter
Page 5 TRACE 2009
First resultsFirst resultsC
orr
elat
ion
Temperature PrecipitationTirana 1951-1980 Tirana 1951-1990
Page 6 TRACE 2009
First resultsFirst results
0
0,5
1
1,5
2
2,5
3
1300 1400 1500 1600 1700 1800 1900 2000
years
ind
ices
bp01
bp02
bp04
AT
AL
AP
Relationship to Bulgaria
r = AL AP AT
bp01 0,63 0,51 0,44
bp02 0,44 0,36 0,35
bp03 0,40 0,41 0,40
Page 7 TRACE 2009
Conclusion and perspectivesConclusion and perspectives
Conclusion
• We have very old material reaching back to 617 AD with the oldest individual counting 1017 tree rings.
• Signal strength within and between sites is rather high, when a good replication is reached.
• The climate signal contained, however, is still weak,but with visible tendency towards winter temperatures and summer drought.
Page 8 TRACE 2009
Conclusion and perspectivesConclusion and perspectives
Needs
Find methods to improve the climate signal, e.g.:
- High-frequency analyses considering extreme years
- Test more detrending procedures
- Measurements of stable isotopes and maximum late wood densities
Increase replication before 1250 AD => potentially including historical material
=> Long-term climate reconstruction for Albania