How can I plot Arctic coastlines?

Hi! I have a sea level pressure gradient plot in a grid system which I want to show in the Arctic polar stereographic map. The latitude spans from 60° to 90° and the longitude spans from -180° to 180°. Can anyone please guide me with a code? I have tryied Arctci Mapping Toolbox but could not solve the issue.

Your any feedback will be highly appreciated!!

[Ashfaq Ahmed]

P.S.: It is a 161x161 double plot.

[Jim Riggs]

There are some examples at this link. Did you try these?

Create Common Plots Using Map Axes - MATLAB & Simulink (mathworks.com)

Answer 1

[Pavan Sahith]

Hello Ashfaq,

I understand you want to show the sea level pressure gradient in Arctic polar stereographic map in which the latitude spans from 60° to 90° and the longitude spans from -180° to 180°.

As a workaround, you can refer to the following sample code in MATLAB.

% Sample data
latitude = 60:90; % Replace with your latitude values
longitude = -180:180; % Replace with your longitude values
pressureGradient = rand(length(latitude), length(longitude)); % Replace with your sea level pressure gradient data

% Create a meshgrid for lat and lon
[lon, lat] = meshgrid(longitude, latitude);

% Create a new figure
figure;

load coastlines
% Create a polar stereographic map axes
axesm('MapProjection', 'stereo', 'MapLatLimit', [60 90], 'MapLonLimit', [-180 180], 'Frame', 'on');
pcolorm(lat,lon,pressureGradient)
geoshow(coastlat,coastlon)

% Add a colorbar
colorbar;

% Set the title and labels
title('Sea Level Pressure Gradient in Arctic');
xlabel('X (Polar Stereographic)');
ylabel('Y (Polar Stereographic)');

Please refer to the following MathWorks documentation links to know more about

"axesm"-https://in.mathworks.com/help/map/ref/axesm.html

"stereo"-https://in.mathworks.com/help/map/stereo.html

"pcolorm"-https://in.mathworks.com/help/map/ref/pcolorm.html

Hope this helps.

Thanks & Regards,

Pavan Sahith