Oregon Tree Ring Width Chronology from 450 to -30 BP

Tree ring width measurements from Horse Ridge in Oregon provide a 480-year paleoclimate record ending around 30 BCE. The dataset is archived by NOAA's World Data Service for Paleoclimatology as part of the PAGES North America 2K initiative. It was last updated in the NOAA system in 1980.

Use Cases

• Reconstruct annual temperature or precipitation anomalies for Oregon using the tree-ring width time-series.
• Calibrate regional climate models by comparing the tree-ring proxy record with instrumental data for overlapping periods.
• Analyze the frequency of climatic extremes, such as droughts, within the 480-year chronology.
• Integrate this Oregon site chronology into the broader PAGES North America 2K network for continental-scale climate analysis.

Strengths

• Provides a 480-year continuous chronology from 450 to -30 BP.
• Data is curated and archived by the authoritative NOAA/NCEI World Data Service for Paleoclimatology.

Limitations

• The temporal coverage ends around 30 BCE, offering no proxy data for the Common Era.
• Data is geographically limited to a single site (Horse Ridge, Oregon).
• The last recorded update was in 1980, potentially indicating older methodologies and no recent revisions.

Provenance

Source

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

Collection Method

Tree-ring analysis (dendrochronology).

Time Range

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

Freshness

null

Geography

Horse Ridge, Oregon, United States of America.