Long Lake Tree Ring Chronology from Washington State (128 to -25 BP)

Tree ring width measurements from a Pseudotsuga menziesii (Douglas fir) site at Long Lake, Washington, USA. The chronology covers 154 years, from 128 to -25 calendar years before present. Data is archived by NOAA's World Data Service for Paleoclimatology.

Use Cases

• Calibrate climate proxies by correlating tree ring width variations with temperature or precipitation records.
• Establish a regional dendrochronological master chronology using the site's ring width series.
• Analyze growth anomalies in the ring width data to identify volcanic or extreme climatic events within the 154-year period.
• Validate climate model simulations of the last two centuries using this high-resolution natural archive.

Strengths

• Chronology spans a specific 154-year period (128 to -25 BP).
• Data is sourced from a single tree species (Pseudotsuga menziesii) at a defined location, ensuring consistency.
• Archived by the authoritative NOAA World Data Service for Paleoclimatology.

Limitations

• Temporal coverage is relatively short (154 years) compared to millennial-length tree ring chronologies.
• Data from a single geographic site may not represent broader regional climate signals.
• The last update date (1975) suggests the underlying collection and processing methods may be outdated.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology) of Pseudotsuga menziesii samples.

Time Range

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

Freshness

null

Geography

Long Lake, Washington, United States of America.