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PaulSpence / Denman2024Voyage

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Compare ACCESS-OM2-01 bathy to BedMachineAntarctica #4

Open PaulSpence opened 3 years ago

PaulSpence commented 3 years ago

Helen Phillips sent me the BedMachine bathymetry to compare to the model bathymetry.

BedMachineAntarctica_2020-07-15_v02.nc

From docs: "BedMachine is a self-consistent dataset of the Antarctic Ice Sheet based on the con-servation of mass that is now freely available at NSIDC."

Code is here: https://github.com/PaulSpence/Denman2024Voyage/blob/paul/notebooks/bathy.ipynb

PaulSpence commented 3 years ago

Sample fig of bedmachine bathy: source unknown.

Denman_bathy

PaulSpence commented 3 years ago

BedMachine topo comes with x,y coordinates in metres (why??). We need the x, y coordinates in the file to be in geographical longitude and latitude coordinates in degrees. Currently they are in meters, which I think is epsg:3031 coordinates. How do I convert these GIS coords to geographic?

Screen Shot 2021-09-10 at 2 11 08 pm

PaulSpence commented 3 years ago

ACCESS-OM2-01 ocean model bathymetry in geographic coordinates. Screen Shot 2021-09-28 at 8 57 45 am

PaulSpence commented 3 years ago

BedMachine v2 Bathy Near Denman Screen Shot 2021-09-28 at 9 19 31 am

helenephillips commented 3 years ago

Gorgeous figures, Paul. Is there a glimmer of hope for converting Bedmachine x/y to lat/lon. Maybe check in with Laura again. She seemed to think it was a solved problem. I think I prefer hot colours for shallow, cool for deep, as in the Bedmachine version.

PaulSpence commented 3 years ago

@helenephillips haven't tackled Laura's suggested solution yet :) Just putting up a few quick figs to show some other modellers today.

helenephillips commented 3 years ago

😊

From: Paul Spence @.> Reply to: PaulSpence/Denman2024Voyage @.> Date: Tuesday, 28 September 2021 at 10:01 am To: PaulSpence/Denman2024Voyage @.> Cc: Helen Phillips @.>, Mention @.***> Subject: Re: [PaulSpence/Denman2024Voyage] Compare ACCESS-OM2-01 bathy to BedMachineAntarctica (#4)

@helenephillipshttps://github.com/helenephillips haven't tackled Laura's suggested solution yet :) Just putting up a few quick figs to show some other modellers today.

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PaulSpence commented 3 years ago

Screen Shot 2021-11-23 at 4 36 22 pm

PaulSpence commented 3 years ago

Screen Shot 2021-11-23 at 4 36 13 pm

PaulSpence commented 3 years ago

Close up of eastern canyon where dense shelf water outflows: Screen Shot 2021-11-23 at 4 38 41 pm