Argentine Tree Ring Chronology from Rio Negro (89 to -41 BP)

NOAA/NCEI archives a tree-ring chronology from the Castaño Overo 1 site in Rio Negro, Argentina. The data provides paleoclimate proxy records covering the period from 89 to -41 calendar years before present. This dataset was contributed by researcher Villalba and published through the World Data Service for Paleoclimatology.

Use Cases

• Reconstruct past temperature or precipitation anomalies using the tree-ring width chronology as a climate proxy.
• Calibrate radiocarbon dating or other chronological models by aligning the tree-ring series with known calendar years.
• Analyze climate extremes or volcanic events by identifying marker years of suppressed growth within the ring-width time series.
• Compare Southern Hemisphere climate signals by correlating this Patagonian chronology with other regional tree-ring records.

Strengths

• Time series spans 130 calendar years (89 to -41 BP), providing a multi-decadal climate record.
• Data is curated and archived by the authoritative NOAA National Centers for Environmental Information (NCEI).

Limitations

• Dataset is temporally stale, with a last update recorded in 1991, limiting integration with modern analyses.
• Sample size and replication statistics for the tree-ring chronology are unknown, affecting confidence in climate signals.
• Geographic coverage is limited to a single site (Castaño Overo 1) in Rio Negro, Argentina.

Provenance

Source

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

Collection Method

Data derived from tree-ring analysis (dendrochronology) of samples collected at the Castaño Overo 1 site.

Time Range

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

Freshness

null

Geography

Rio Negro, Argentina.