Washington State Tree Ring Chronology from 460 BC

Tree ring data from Colockum Pass, Washington provides a proxy climate record spanning 485 years, from 460 to -25 calendar years before present. The dataset is archived by NOAA's National Centers for Environmental Information under the World Data Service for Paleoclimatology. The original study was published in 1975.

Use Cases

• Reconstruct annual temperature or precipitation anomalies from tree ring width measurements.
• Calibrate climate models using proxy data from the Pacific Northwest spanning 485 years.
• Analyze long-term climate trends in Washington State using the time-series of ring parameters.
• Compare this chronology with other regional tree ring datasets to study spatial climate patterns.

Strengths

• Time period coverage spans 485 calendar years.
• Data originates from NOAA's authoritative World Data Service for Paleoclimatology.
• Geographic location is precisely specified as Colockum Pass, Washington.

Limitations

• The dataset is temporally stale, with a last update date of 1975.
• Specific parameters, column names, and sample sizes are unknown.
• The calendar year -25 BP requires careful interpretation of dating conventions.

Provenance

Source

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

Collection Method

Tree ring analysis.

Time Range

460 to -25 calendar years before present (BP).

Freshness

1975-01-01

Geography

Colockum Pass, Washington, United States Of America.