Gunisao Lake Tree Ring Chronology for Paleoclimate Analysis

Tree ring width measurements from Gunisao Lake in Manitoba, Canada provide a 92-year climate proxy record. The NOAA National Centers for Environmental Information archives this data, which covers the period from 54 to -38 calendar years before present. This Paleoclimatology study was last updated in 1988.

Use Cases

• Reconstruct past temperature or precipitation anomalies using the tree ring width time-series.
• Calibrate radiocarbon dating models by aligning the ring chronology with the known calendar year BP range.
• Analyze climate sensitivity by correlating ring width variations with other regional paleoclimate proxies.
• Study extreme historical climate events identified as narrow or wide rings within the 92-year sequence.

Strengths

• Data spans a 92-year chronology (54 to -38 BP), providing a multi-decadal climate record.
• Sourced from the authoritative NOAA NCEI World Data Service for Paleoclimatology.

Limitations

• Temporal coverage is relatively short for climate reconstruction at under 100 years.
• Data is geographically limited to a single site (Gunisao Lake, Manitoba).
• The dataset has not been updated since 1988, potentially lacking modern reanalysis.

Provenance

Source

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

Collection Method

Tree ring measurements (dendrochronology).

Time Range

54 to -38 calendar years before present (BP).

Freshness

Last updated in 1988.

Geography

Gunisao Lake, Manitoba, Canada.