Alaskan Tree-Ring Chronology from Beasley Creek (397 to -43 BP)

A 440-year tree-ring chronology from mountain hemlock (Tsuga mertensiana) at Beasley Creek, Alaska, provides a proxy for past climate conditions. The dataset is archived by the NOAA National Centers for Environmental Information's World Data Service for Paleoclimatology. It was published in 1993.

Use Cases

• Reconstruct past temperature or precipitation anomalies from the tree-ring width time-series.
• Calibrate the tree-ring chronology against instrumental climate records for the Alaska region.
• Analyze the frequency and magnitude of extreme growth years within the 440-year record.
• Compare this Tsuga mertensiana chronology with other regional tree-ring datasets for spatial climate analysis.

Strengths

• Covers a 440-year time period from 397 to -43 calendar years before present.
• Sourced from the authoritative NOAA/NCEI World Data Service for Paleoclimatology.
• Provides a geospatially specific record for a site in Alaska.

Limitations

• Data is temporally stale, with a last update recorded in 1993.
• The specific sample depth (number of tree cores per year) is unknown, affecting confidence in early periods.
• Limited geographic scope to a single site in Alaska.

Provenance

Source

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

Collection Method

Tree-ring analysis (dendrochronology) of mountain hemlock (Tsuga mertensiana).

Time Range

397 to -43 calendar years before present (BP).

Freshness

1993-01-01

Geography

Beasley Creek, Alaska, United States of America.