Objectives

Our research contributes to Arctic Observatory Network (AON) goals by observing and documenting arctic environmental change through development of long-term multivariate data sets at two observatory sites in Alaska and Siberia.  We are also working to integrate our findings across the network of other long-term arctic research projects, including the Arctic LTER, by building databases and cross-disciplinary collaborations.

Our primary objective is to increase understanding of carbon, water, and energy fluxes, and their interactions, in arctic landscapes.

 

Specifically, we will:

  • Continue and improve existing year-round measurements of carbon, water, energy balance at our existing sites in Alaska and Russia using micrometeorological towers and the eddy-covariance technique.

  • Continue to produce high-quality, multivariable timeseries data from all of these sites using advanced data assimilation and gap-filling methods.  Datasets such as these are essential for development of long-term, large-area models and their predictions, and for understanding the correlations in time among carbon, water, and energy fluxes from changing Arctic landscapes.

  • Performing additional descriptive studies and process measurements within the tower footprints that will further application of carbon, water, energy balance data (e.g., species composition, C and N stocks, soil respiration, spatial variation in CO2 and CH4 fluxes).

The larger goal is to transform these understandings into predictions of change at the scale of watersheds, landscapes, regions and ultimately the entire Arctic System.