Tree ring chronology data from Douglas fir (PIPO) specimens collected at Fort Lewis, Washington. The time series covers a period from 63 to -25 calendar years before present, providing proxy climate records. The dataset is archived by NOAA National Centers for Environmental Information under the World Data Service for Paleoclimatology.
Use Cases
- Reconstruct annual temperature or precipitation anomalies using tree ring width measurements as a proxy.
- Calibrate climate models by comparing the chronology data with instrumental climate records for the Pacific Northwest region.
- Analyze growth patterns and environmental stressors by examining the time series of ring widths over the 88-year span.
Strengths
- Time series covers a specific 88-year period (63 to -25 BP) for analysis.
- Data originates from NOAA NCEI, an authoritative source for paleoclimate archives.
Limitations
- Temporal coverage is limited to 88 years, which may be short for long-term climate trend analysis.
- Data is from a single geographic location (Fort Lewis, Washington), limiting regional comparisons.
- The dataset appears stale, with a last updated date of 1975, indicating no recent revisions.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI), World Data Service (WDS) for Paleoclimatology.
- Collection Method
- Tree ring measurements from Douglas fir (Pseudotsuga menziesii, PIPO) specimens.
- Time Range
- 63 to -25 calendar years before present (BP).
- Freshness
- null
- Geography
- Fort Lewis, Washington, United States.