CHEESEHEAD, Park Falls, Wisconsin

The Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors (CHEESEHEAD) is an ongoing NSF project based on an intensive field campaign that occurred from June to October 2019. The purpose of the study is to examine how the atmospheric boundary layer responds to spatial heterogeneity in surface-atmospheric exchanges of heat and water. Additional scientific goals are to test whether lack of energy balance closure measured in eddy covariance (EC) towers is related to mesoscale atmospheric processes and to evaluate data-driven methods for scaling surface energy fluxes, with the aim of improving model-data comparison.

Qikirtaarjuk Island Observatory

A tower installation to measure fluxes of carbon dioxide from and island in the Dease Strait near the town of Cambridge Bay in Nunavut. Tower has been operating continuously since April 2017. The long-term dataset is being used to determine how sea ice influences CO2 fluxes throughout a seasonal cycle, including during autumn freeze-up and spring break-up.

Nathaniel B. Palmer

For nine cruises over an 18 month period we installed and maintained an eddy covariance system aboard the RVIB Nathaniel B. Palmer. The goal was to measure fluxes of carbon dioxide over the ocean and marginal ice zone. The particularly emphasis of this work was to use the fluxes to calculate the gas transfer velocity in varying concentrations of sea ice. [Dissertation]