Data for 'Water mass transformation in an idealised model of the East Greenland Current'
收藏资源简介:
Each compressed folder contains the same variables but for the different idealised East Greenland Current experiments referred to as: Control, No sea ice, Fresher source waters, Higher atmospheric temperature, and Higher winter wind forcing. The 'VARIABLE_NAME's have the following meaning: layers_UH.01 - density layer integrated zonal transport (m^2/s), layers_VH.01 - density layer integrated meridional transport (m^2/s), layers_Hs.01 - density layer thickness (m), HEFF - sea ice thickness (m), UICE - zonal ice velocity (m/s), VICE - meridional ice velocity (m/s), T - potential temperature (degree C), S - salinity (g/kg) DXG - distance between x direction grid points (m), DYG - distance between y direction grid points (m). 3-day averages over one year are presented for each variable. Each folder contains files which are of the form 'VARIABLE_NAME'.XX.data/.meta, where XX is the timestep starting from 2nd July until 3rd July one year later. Paper abstract: The Nordic Seas are a key region for the global-scale thermohaline overturning circulation. The East Greenland Current specifically is an important export pathway for large amounts of freshwater. In recent years, the sea ice edge along the east coast of Greenland has been retreating, this leads to related changes in air-sea exchange and the extent of deep convection, directly influencing water mass transformation. An idealised model of the East Greenland Current is used to investigate how changes in ice export through Fram Strait, changes in freshwater input, changes in atmospheric temperature, and changes in wind forcing are expected to influence water mass transformation in the East Greenland Current. Changes in surface density are driven by changes in surface salinity, coming from sea ice melt, formation, and transport. Eddy fluxes also play a role in transporting buoyant water off the shelf and dense water onto the shelf. If sea ice transport over the East Greenland Current is reduced there will be less water mass transformation in the region due to sea ice processes, but the absence of sea ice can lead to water mass transformation through convection and other physical processes.



