Mt. Angeles Douglas Fir Tree Ring Chronology from 200 BC

A 233-year tree-ring chronology from Douglas Fir (PSME) trees at Mt. Angeles, Washington, spanning from 200 BC to 33 BC. The dataset provides paleoclimatology parameters derived from tree rings and is archived by NOAA's World Data Service for Paleoclimatology. The study was published in 1983.

Use Cases

• Analyze annual tree-ring width variations to reconstruct past climate conditions like temperature or precipitation.
• Correlate the chronology with other regional paleoclimate records to validate broader climate models.
• Study the growth response of Douglas Fir (PSME) to environmental changes over a 233-year period.

Strengths

• Time-series data covers a 233-year period from 200 BC to 33 BC.
• Specific geographic location (Mt. Angeles, Washington) provides localized climate history.

Limitations

• Data is temporally stale, last updated in 1983, and may not reflect modern analysis techniques.
• Limited to one tree species (Douglas Fir) and one location, reducing generalizability.
• Unknown sample size (number of tree cores) and specific parameter details beyond 'tree ring'.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology) of Douglas Fir (PSME) samples.

Time Range

200 BC to 33 BC (calendar years before present).

Freshness

1983-01-01

Geography

Mt. Angeles, Washington, United States.