Iowa Tree Ring Chronology from 235 to -31 Years BP

Tree ring width data provides a proxy record for past climate conditions at Lacey-Keosauqua State Park in Iowa, United States. The chronology spans 266 years, from 235 to -31 calendar years before present. The dataset was archived by NOAA's National Centers for Environmental Information and last updated in 1981.

Use Cases

• Reconstruct annual temperature or precipitation anomalies from tree ring width measurements.
• Calibrate the tree ring chronology against other regional paleoclimate proxies for validation.
• Analyze growth trends and extreme events within the 266-year time series for climate signal extraction.
• Compare this Iowa site chronology with other North American ITRDB records for spatial pattern analysis.

Strengths

• Time series covers a specific 266-year period (235 to -31 BP).
• Data is part of the authoritative International Tree-Ring Data Bank (ITRDB) collection.

Limitations

• Temporal coverage is relatively short for long-term climate trend analysis.
• Data is geographically limited to a single site in Iowa, reducing regional representativeness.
• The dataset was last updated in 1981 and may lack modern methodological refinements.

Provenance

Source

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

Collection Method

Tree ring sampling and measurement (dendrochronology).

Time Range

235 to -31 calendar years before present (BP).

Freshness

1981-01-01

Geography

Lacey-Keosauqua State Park, Iowa, United States of America.