Canadian Tree Ring Chronology from 524 to 44 BCE

524 tree-ring width measurements from the Ptarmigan site in Canada, covering the period from 524 to 44 calendar years before present. The dataset was archived by NOAA's World Data Service for Paleoclimatology and originates from the Jacoby research group. The record was last updated in 1994.

Use Cases

• Reconstruct past temperature or precipitation anomalies using the tree-ring width time-series.
• Calibrate climate models by comparing the Ptarmigan site chronology with other proxy records.
• Analyze growth patterns and environmental stressors for the sampled tree species in Canada.

Strengths

• Time-series spans 568 years, from 524 to 44 BCE.
• Data is curated and archived by the authoritative NOAA World Data Service for Paleoclimatology.

Limitations

• Dataset is temporally stale, with a last update date of 1994.
• Sample size and specific site details are not provided in the metadata.

Provenance

Source

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

Collection Method

Tree ring sampling and measurement.

Time Range

524 to -44 calendar years BP (Before Present, 1950).

Freshness

1994-01-01

Geography

Canada (Ptarmigan site).