Blewett Pass Tree Ring Chronology for Climate Reconstruction

Tree ring width data from Pinus ponderosa (PIPO) trees at Blewett Pass, Washington, provides a climate proxy record. The chronology covers 547 years, from 517 to -30 calendar years before present, archived by NOAA's World Data Service for Paleoclimatology. This dataset was published by researcher Graumlich and last updated in 1980.

Use Cases

• Reconstruct annual temperature or precipitation anomalies from tree ring width measurements.
• Calibrate climate models using the 547-year proxy record for the Pacific Northwest region.
• Analyze growth patterns and climate sensitivity of Pinus ponderosa (PIPO) at the Blewett Pass site.
• Cross-date and validate other tree-ring chronologies from the Washington state area.

Strengths

• Covers a 547-year time series from 517 to -30 calendar years BP.
• Sourced from the authoritative NOAA/NCEI World Data Service for Paleoclimatology.

Limitations

• Data recency is low, with a last update in 1980, potentially missing modern analytical methods.
• Geographic scope is limited to a single site (Blewett Pass, Washington).
• Sample size and replication statistics for the tree cores are unknown.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology) of Pinus ponderosa (PIPO) cores.

Time Range

517 to -30 calendar years before present (BP).

Freshness

null

Geography

Blewett Pass, Washington, United States of America.