INVESTIGATING BLUE LIGHT INTENSITY AS A NEW PARAMETER FOR TREE RING-BASED GLACIER MASS BALANCE RECONSTRUCTIONS IN ALASKA
Comparisons of total, summer, and winter mass balance with BI and RW chronologies show that a combination of the parameters can more fully reconstruct past mass balance. Included in the development of these models is the assessment of how local and regional climate variability is captured in single and composite chronologies. Preliminary results for Gulkana Glacier suggest that the regional BI chronology is most strongly correlated with summer mass balance, more so than for RW. Additionally, Wolverine Glacier’s summer and annual mass balance correlate best with regional chronologies that likely capture more of the large-scale circulation changes. Ongoing investigations aim to examine the use of tree-ring records that are teleconnected to the climate variability at the Alaska sites. Previous work has shown that teleconnection is responsible for an inverse relationship between mass balances of the Alaskan glaciers with the glaciers of the Pacific Northwest at least on the decadal scale and his relationship may be leveraged in modeling and reconstruction.