Chilean Tree Ring Chronology from 819 to 25 BCE

Tree ring width measurements from Chile provide a climate proxy record spanning 844 years, from 819 to 25 BCE. The dataset was archived by NOAA's World Data Service for Paleoclimatology and originates from the ITRDB CHIL007 study. This paleoclimate data was last updated in the NOAA system in 1975.

Use Cases

• Reconstruct past temperature or precipitation anomalies in Chile by analyzing the tree ring width time-series.
• Calibrate the chronology against known volcanic events or climate shifts using the annual resolution of the ring data.
• Compare this Southern Hemisphere tree ring record with Northern Hemisphere chronologies to study inter-hemispheric climate linkages.
• Validate regional climate model outputs for past centuries using the proxy evidence from the ITRDB CHIL007 site.

Strengths

• Covers a significant 844-year time period (819 to 25 BCE).
• Provides annual-resolution proxy data for climate reconstruction.
• Archived and standardized by the authoritative NOAA/NCEI World Data Service for Paleoclimatology.

Limitations

• The data's last known system update was in 1975, indicating potential staleness and lack of recent curation.
• The geographic coverage is limited to a single site in Chile (ITRDB CHIL007), reducing regional representativeness.
• Specific parameters, measurement methods, and sample depth are unknown without accessing the full metadata.

Provenance

Source

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

Collection Method

Tree ring data collection (dendrochronology), likely from core samples.

Time Range

819 to -25 calendar years before present (BP), equivalent to 819 to 25 BCE.

Freshness

null

Geography

Chile (specific location details within metadata for ITRDB CHIL007).