Gnat Pass Tree Ring Chronology For Paleoclimate Reconstruction

NOAA/WDS Paleoclimatology archives a tree-ring dataset from Gnat Pass, Dease Lake, British Columbia. The data provides a chronology covering 226 calendar years, from 193 to -33 years before present. NOAA National Centers for Environmental Information (NCEI) published this study in 1983.

Use Cases

• Reconstruct past temperature or precipitation anomalies using annual tree-ring width measurements.
• Calibrate climate models by comparing the tree-ring chronology with instrumental climate records for the region.
• Analyze growth trends and potential environmental stressors for the tree species at the Gnat Pass site.

Strengths

• 226-year chronology providing a multi-century climate proxy.
• Geographically specific data from a single site in British Columbia, Canada.

Limitations

• Data is temporally stale, last updated in 1983 and may lack modern methodological refinements.
• Limited geographic scope to one site reduces broad regional representativeness.
• Unknown sample size (number of tree cores) limits assessment of statistical robustness.

Provenance

Source

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

Collection Method

Tree-ring analysis (dendrochronology).

Time Range

193 to -33 calendar years before present (BP).

Freshness

null

Geography

Gnat Pass, Dease Lake, British Columbia, Canada.