Argentine Tree-Ring Chronology for Climate Reconstruction

Tree-ring width data from the Castaño Overo site in Rio Negro, Argentina, provides a 419-year climate proxy record. The chronology spans from 378 to -41 calendar years before present, calibrated for paleoclimatic analysis. NOAA National Centers for Environmental Information archives this dataset, which was last updated in 1991.

Use Cases

• Reconstruct historical temperature or precipitation in Rio Negro using the annual tree-ring width series.
• Calibrate regional climate models by comparing the 419-year tree-ring chronology with instrumental records.
• Analyze climate periodicity and extreme events in Patagonia through the dated ring-width index.
• Validate other paleoclimate proxies from South America by correlating with this site-specific chronology.

Strengths

• 419-year continuous chronology from 378 to -41 BP provides a multi-century climate record.
• Data is archived and curated by NOAA's World Data Service for Paleoclimatology, an authoritative source.

Limitations

• Dataset has not been updated since 1991, potentially missing newer methodological corrections.
• Specific sample depth, replication statistics, and measurement metadata are not provided in the basic description.

Provenance

Source

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

Collection Method

Tree-ring analysis (dendrochronology) from the Castaño Overo site.

Time Range

378 to -41 calendar years before present (BP).

Freshness

1991-01-01

Geography

Rio Negro, Argentina.