Klahhane Ridge Tree Ring Chronology for Subalpine Fir

Tree ring width measurements from subalpine fir (Abies lasiocarpa) at Klahhane Ridge, Washington, provide a 151-year climate proxy record. The NOAA National Centers for Environmental Information archives this paleoclimatology study, with data coverage from 111 to -40 calendar years before present. This dataset is part of the International Tree-Ring Data Bank (ITRDB) and was last updated in the NOAA system in 1990.

Use Cases

• Reconstruct past temperature or precipitation anomalies by analyzing the tree_ring_width time series as a climate proxy.
• Calibrate climate models for the Pacific Northwest using the precisely dated annual chronology spanning 151 years.
• Study the growth response of subalpine fir (ABLA) to documented historical climate events within the recorded time_range.
• Compare this site's chronology with other ITRDB records from Washington to analyze regional climate signals.

Strengths

• 151-year continuous chronology from 111 to -40 BP, providing a multi-century climate record.
• Data is part of the authoritative International Tree-Ring Data Bank (ITRDB) curated by NOAA NCEI.
• Specific geographic location (Klahhane Ridge, Washington) and species (Abies lasiocarpa) are documented.

Limitations

• Temporal coverage ends at -40 BP (approximately 1990 CE), lacking recent decades.
• Sample size (number of tree cores) and replication statistics are unknown from the provided metadata.
• The single-species, single-site focus limits broad spatial climate inferences without additional regional data.

Provenance

Source

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

Collection Method

Tree ring cores collected and measured using standard dendrochronological techniques.

Time Range

111 to -40 calendar years before present (BP).

Freshness

null

Geography

Klahhane Ridge, Washington, United States of America.