Twelvemile Summit Tree Ring Chronology From Alaska

NOAA/WDS Paleoclimatology archives tree ring data from the Twelvemile Summit site in Alaska. The chronology covers a period from 237 to -47 calendar years before present (BP). This dataset is part of the NOAA National Centers for Environmental Information's World Data Service for Paleoclimatology.

Use Cases

• Reconstruct past temperature or precipitation anomalies using tree-ring width indices.
• Analyze treeline response to climate change by correlating ring measurements with the documented time period.
• Calibrate climate models with proxy data from the 284-year chronology spanning 237 to -47 BP.
• Study growth patterns in Alaskan tree species as a biological climate archive.

Strengths

• Chronology spans 284 calendar years (237 to -47 BP).
• Data is curated and archived by the authoritative NOAA National Centers for Environmental Information.

Limitations

• Temporal coverage ends at -47 BP, providing no modern data for recent climate change comparison.
• Data is geographically limited to a single site (Twelvemile Summit, Alaska).
• The dataset was last updated in 1997, indicating potential staleness in metadata or availability.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI) World Data Service (WDS) for Paleoclimatology.

Collection Method

Tree ring analysis (dendrochronology).

Time Range

237 to -47 calendar years before present (BP).

Freshness

null

Geography

Alaska, United States Of America (Twelvemile Summit site).