Alaskan Tree Ring Chronology for Paleoclimate Study

NOAA's Paleoclimatology archive provides a tree ring chronology from the Arrigetch region of Alaska. The data covers a period from 365 to -40 calendar years before present. It was published by NOAA NCEI's World Data Service for Paleoclimatology, with a last update recorded in 1990.

Use Cases

• Reconstruct past temperature or precipitation anomalies using tree ring width measurements.
• Calibrate climate models by comparing the chronology with known historical climate events.
• Analyze growth patterns to infer ecological responses to environmental changes over centuries.
• Establish a dated master chronology for cross-referencing with other Alaskan tree ring records.

Strengths

• Data spans over 400 years of historical coverage (365 to -40 BP).
• Sourced from the authoritative NOAA NCEI World Data Service for Paleoclimatology.

Limitations

• The dataset's last update was in 1990, indicating potential staleness.
• Specific sample size, row count, and measurement parameters are not provided in the description.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology).

Time Range

From 365 to -40 calendar years before present (BP).

Freshness

null

Geography

Arrigetch region, Alaska, United States of America.