Chilean Tree-Ring Chronology from El Chacay (309 to -25 BP)

NOAA/WDS Paleoclimatology archives a tree-ring dataset from the El Chacay site in Biobio, Chile. The chronology spans 334 years, from 309 to -25 calendar years before present, for reconstructing past climate conditions. This study is maintained by the NOAA National Centers for Environmental Information.

Use Cases

• Calibrate climate models using annual-resolution tree-ring width data as a proxy for temperature or precipitation over a 334-year period.
• Analyze growth anomaly years within the chronology to identify extreme historical drought or volcanic events in central Chile.
• Cross-date this South American chronology with other ITRDB series to validate hemispheric climate teleconnection patterns.
• Reconstruct past El Niño-Southern Oscillation (ENSO) influences using the site's geographic location and ring-width variability.

Strengths

• Data covers a continuous 334-year period (309 to -25 BP) providing multi-century resolution.
• Sourced from the authoritative NOAA/NCEI World Data Service for Paleoclimatology with standardized metadata.

Limitations

• Temporal coverage ends at -25 BP (approximately 1975 CE), lacking recent decades for modern climate comparison.
• Specific sample depth, replication statistics, and measurement parameters are not provided in the input.

Provenance

Source

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

Collection Method

Tree-ring analysis (dendrochronology) from the El Chacay site.

Time Range

309 to -25 calendar years before present (BP).

Freshness

null

Geography

Biobio, Chile.