Current From 2014 to 2022

Authors:

Am lie Gadsby, Margaret Lindeman, Fiamma Straneo

Date Created:

2025-01-01

Course Title:

Professor:

Not specified

About Paper:

Freshwater from the Arctic Ocean and the Greenland ice sheet portions of the data are absent and require reconstruction. The flows along the east coast of Greenland along the shelf in project builds on a previous study of the first year’s data, and also the East Greenland Coastal Current (EGCC). Variability in this incorporates NOAA satellite and summer shipboard data. Through current modulates the transfer of freshwater into the basin interiothis work, we aim to understand the seasonal and interannual where it affects large scale ocean circulation that drives global variation in temperature, salinity and velocity. This will be used climate. As climate change causes increased melting of sea ice to inform computational methods of reconstructing missing data to and glaciers, understanding this freshwater export is crucial to estimate the volume, freshwater and heat current transport. predicting changes in overturning circulation. Thus far, our analysis indicates a strong seasonal trend in Our research is the first analysis of a ten-year time series of datfreshwater transport: peaking in February and falling over the fromtwomooredsensorarrays,CF1andCF3fromtheOverturning course of the summer, however there is significant day-to-day and in the North Atlantic Program (OSNAP). These are located on the annual variation. Instrument blowdown caused by storm events shelf at Cape Farewell in southern Greenland. Data is collected also exhibits a seasonal cycle: storms are longer and more frequent from temperature and salinity sensors, and current meters mounted over the winter months. on the mooring lines. This project will contribute to an emerging understanding of Gathering data in this region is challenging due to sea ice cover currents in the subpolar North Atlantic, and provide background limiting ship surveys outside of the summer, strong storm events to investigate causes of the variability in this behaviour. and passing icebergs and fishing lines. As a result, multi-year

Abstract:

Freshwater from the Arctic Ocean and the Greenland ice sheet portions of the data are absent and require reconstruction. The flows along the east coast of Greenland along the shelf in project builds on a previous study of the first year’s data, and also the East Greenland Coastal Current (EGCC). Variability in this incorporates NOAA satellite and summer shipboard data. Through current modulates the transfer of freshwater into the basin interiothis work, we aim to understand the seasonal and interannual where it affects large scale ocean circulation that drives global variation in temperature, salinity and velocity. This will be used climate. As climate change causes increased melting of sea ice to inform computational methods of reconstructing missing data to and glaciers, understanding this freshwater export is crucial to estimate the volume, freshwater and heat current transport. predicting changes in overturning circulation. Thus far, our analysis indicates a strong seasonal trend in Our research is the first analysis of a ten-year time series of datfreshwater transport: peaking in February and falling over the fromtwomooredsensorarrays,CF1andCF3fromtheOverturning course of the summer, however there is significant day-to-day and in the North Atlantic Program (OSNAP). These are located on the annual variation. Instrument blowdown caused by storm events shelf at Cape Farewell in southern Greenland. Data is collected also exhibits a seasonal cycle: storms are longer and more frequent from temperature and salinity sensors, and current meters mounted over the winter months. on the mooring lines. This project will contribute to an emerging understanding of Gathering data in this region is challenging due to sea ice cover currents in the subpolar North Atlantic, and provide background limiting ship surveys outside of the summer, strong storm events to investigate causes of the variability in this behaviour. and passing icebergs and fishing lines. As a result, multi-year

Source:

Harvard / Harvard College | Pforzheimer House | Neuroscience | 2028 / 2025

Topics:

current, freshwater, greenland, ice, seasonal, storm, ocean, along, east, shelf, first, variability

Co-authors:

@amliegadsby274 , @margaretlindeman275 , @fiammastraneo276