New Zealand Tree Ring Chronology from 547 BC

Dendrochronological data from the Ahaura site in New Zealand provides a 573-year tree ring width chronology. This paleoclimate record, archived by NOAA's World Data Service for Paleoclimatology, covers the period from 547 to 26 BC. The dataset was published by researcher Dunwiddie and last updated in the NOAA system in 1976.

Use Cases

• Reconstruct past temperature or precipitation anomalies by calibrating tree ring width series against modern climate data.
• Analyze growth patterns and climate sensitivity by examining the annual resolution of the ring width chronology.
• Validate or extend regional climate models for the Holocene period using the precisely dated 573-year record.
• Compare climatic events across hemispheres by aligning this Southern Hemisphere chronology with Northern Hemisphere tree ring datasets.

Strengths

• Provides a precisely dated, annual-resolution climate proxy covering 573 consecutive years.
• Data is curated and archived by the authoritative NOAA World Data Service for Paleoclimatology.

Limitations

• The dataset is temporally stale, with its last recorded update in 1976, potentially missing modern reanalysis.
• The single-site geographic focus (Ahaura, New Zealand) limits broad regional conclusions without additional records.
• The raw data format and specific measurement parameters (e.g., raw ring widths vs. indices) are not detailed in the provided metadata.

Provenance

Source

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

Collection Method

Tree ring analysis (dendrochronology) from core samples, measuring ring widths to build a chronology.

Time Range

547 to 26 BC (calendar years before present).

Freshness

null

Geography

Ahaura site, New Zealand.