Grand Canyon Tree Ring Chronology for Climate Reconstruction

A 196-year tree ring chronology from Ponderosa Pine trees on the North Rim of the Grand Canyon, providing a proxy for historical climate conditions. The dataset was archived by NOAA's National Centers for Environmental Information under its Paleoclimatology program. The original study and data collection were completed around 1996.

Use Cases

• Reconstruct historical precipitation and temperature anomalies by analyzing annual ring width measurements.
• Calibrate regional climate models using the precisely dated 150 to -46 BP time series from tree cores.
• Study the growth response of Ponderosa Pine (PIPO) to past climate events within the Upper Walhalla Plateau ecosystem.
• Cross-date and validate other paleoclimate proxy records from the southwestern U.S. using this ITRDB AZ561 chronology.

Strengths

• Time series covers 196 calendar years (150 to -46 BP), providing a multi-century climate record.
• Data is part of the authoritative International Tree-Ring Data Bank (ITRDB) and curated by NOAA NCEI.

Limitations

• Data is temporally stale, with the last update recorded in 1996, limiting relevance for recent climate studies.
• Geographic scope is limited to a single site (Upper Walhalla Plateau), which may not represent broader regional patterns.
• Specific metrics like sample depth, replication, and measurement statistics are unknown without accessing the full metadata.

Provenance

Source

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

Collection Method

Tree ring data collected via dendrochronological core sampling from Ponderosa Pine trees.

Time Range

150 to -46 calendar years before present (BP).

Freshness

null

Geography

Upper Walhalla Plateau, North Rim, Grand Canyon National Park, Arizona, United States.