Tree ring width measurements from Tsuga mertensiana (mountain hemlock) at Mount Jefferson in Oregon, USA. The chronology covers 413 years, from 370 to 43 years before present (calendar years BCE), archived by NOAA's World Data Service for Paleoclimatology. Data was published by the NOAA National Centers for Environmental Information in 1993.
Use Cases
- Reconstruct past temperature or precipitation anomalies by analyzing the tree_ring_width time series as a climate proxy.
- Calibrate the tree_ring_width chronology against instrumental climate records for the Oregon region to validate climate signals.
- Perform cross-dating with other regional tree_ring chronologies using the year-by-year growth patterns to verify dating accuracy.
- Study the response of Tsuga mertensiana growth to specific volcanic or climatic events within the 413-year temporal_coverage.
Strengths
- Covers a specific 413-year time period from 370 to 43 BCE.
- Data is from a single species (Tsuga mertensiana) at a defined geographic location (Mount Jefferson, Oregon).
- Archived and standardized by the authoritative NOAA World Data Service for Paleoclimatology.
Limitations
- Temporal coverage is limited to a single, pre-modern 413-year period, with no recent data.
- Sample size and replication statistics (e.g., number of tree cores) are unknown from the description.
- Data is geographically limited to one site in Oregon, which may not represent broader regional patterns.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI) World Data Service (WDS) for Paleoclimatology.
- Collection Method
- Tree ring analysis (dendrochronology) of Tsuga mertensiana samples.
- Time Range
- 370 to 43 calendar years before present (BP), approximately 370 BCE to 43 BCE.
- Freshness
- null
- Geography
- Mount Jefferson, Oregon, United States of America.