Oregon Tree Ring Chronology From 669 to 32 BCE

669 tree ring width measurements spanning from 669 to 32 years before present, sourced from the Horse Ridge site in Oregon. This dendrochronological dataset is archived by NOAA's World Data Service for Paleoclimatology. The data collection was last updated in the public record in 1982.

Use Cases

• Reconstruct past temperature or precipitation anomalies for Oregon using the annual tree ring width series.
• Calibrate radiocarbon dating or validate other paleoclimate proxies by cross-dating the established tree ring chronology.
• Analyze the frequency of extreme climatic events, such as droughts, by identifying narrow ring sequences in the time series.
• Study forest growth responses to historical climate forcing over a 700-year period in a specific Oregon location.

Strengths

• Covers a 701-year time period from 669 to 32 BCE, providing a long-term climate record.
• Sourced from the authoritative NOAA/NCEI World Data Service for Paleoclimatology, ensuring standardized metadata.
• Data is focused on a specific geographic location (Horse Ridge, Oregon), allowing for localized climate analysis.

Limitations

• The dataset's last recorded update was in 1982, potentially lacking modern methodological refinements.
• Limited to a single tree species and site, reducing generalizability for broader regional climate reconstructions.
• The raw sample size (number of individual tree cores) and measurement precision are unknown from the provided metadata.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology) from core samples.

Time Range

669 to 32 calendar years before present (BP).

Freshness

1982-01-01

Geography

Horse Ridge, Oregon, United States of America.