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PaulSpence / Denman2024Voyage

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Coastal current in the models #22

Open PaulSpence opened 1 year ago

PaulSpence commented 1 year ago

What is the strength and variability in the coastal current? In the model temp animations it looks really strong and highly seasonal: https://github.com/PaulSpence/Denman2024Voyage/issues/13#issuecomment-927216390

I think it might be an important process for transporting heat to the ice shelf cavities.

yuhang559 commented 1 year ago

I defined the location of the coastal current by 5-year mean streamline (0.5Sv) in MITgcm. Mask below: image Based on the fixed mask, I calculated the kinetic energy of the coastal current (AACC) and also the ASC based on the 1000 m isobath. The kinetic energy of the currents is highly correlated with the ice shelf melting rate in this region, while the similar pattern of the ASC and AACC are likely resulting from the repeat atmospheric forcing. image

The figure below shows the monthly mean kinetic energy vs depth of the AACC, which shows the AACC is highly seasonal (strong in April, May and March). AACC is active on the surface of 500 m and has a big decrease within 300 m. image