Churchill Mountain Douglas Fir Tree Ring Chronology

153 calendar years of tree ring parameters from Douglas Fir (PSME) trees at Churchill Mountain, Washington. The data is archived by NOAA National Centers for Environmental Information as part of the World Data Service for Paleoclimatology. The study was published in 1975.

Use Cases

• Reconstruct annual temperature or precipitation anomalies from tree ring width measurements.
• Calibrate regional climate models using the 153-year chronology as a proxy record.
• Analyze growth patterns (e.g., ring width, density) to study forest response to historical environmental events.

Strengths

• Provides a 153-year continuous chronology from 128 to -25 calendar years BP.
• Data originates from NOAA NCEI, an authoritative environmental data repository.

Limitations

• The dataset is temporally stale, last updated in 1975, potentially lacking modern methodological refinements.
• Specific sample size, measurement parameters, and data structure are unknown from the provided metadata.

Provenance

Source

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

Collection Method

Tree ring data collection from Douglas Fir (Pseudotsuga menziesii) trees.

Time Range

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

Geography

Churchill Mountain, Washington, United States.