MATLAB Examples

dtu10mdt_interp documentation

The dtu10mdt_interp function loads and interpolates the DTU10MDT mean dynamic topography dataset.

Contents

Installation

There is no particular installation procedure, but you'll need to download this dataset: ftp://ftp.spacecenter.dk/pub/DTU10/1_MIN/DTU10MDT_1min.nc After downloading the data, make sure Matlab can find the dataset and this function. Then you should be able to use the dtu10mdt_interp function.

Syntax

mdti = dtu10mdt_interp(lati,loni)

Description

mdti = dtu10mdt_interp(lati,loni) gives the mean dynamic topography in meters at geo locations lati,loni. Note: large areas of lati,loni will take longer to load and interpolate.

Example

Make a grid around the Mediterranean Sea and interpolate MDT values to that grid:

[lon,lat] = meshgrid(-18:0.1:41,30:0.1:48);
mdt = dtu10mdt_interp(lat,lon);

Now plot the interpolated data:

pcolor(lon,lat,mdt)
shading flat
caxis(.5*[-1 1])
cb = colorbar('northoutside');

That's pretty ugly out of context, so fill in some borders with my function from File Exchange. And it's an anomaly, so we might as well plot with a diverging colormap from cmocean (Thyng et al., 2016).

borders('countries','facecolor',[.5 .5 .5],'nomappingtoolbox')
cmocean balance

Citing this dataset

This function and supporting documentation were written by Chad A. Greene of the University of Texas at Austin (UTIG), December 2016.

The Mean Dynamic Topography data should be cited as:

Andersen, O. B., and P. Knudsen (2009), DNSC08 mean sea surface and mean dynamic topography models, J. Geophys. Res., 114, C11001, doi:10.1029/2008JC005179.

If this function is helpful for you, please cite:

Greene, C. A., Gwyther, D. E., & Blankenship, D. D. (2016). Antarctic Mapping Tools for Matlab. Computers & Geosciences. doi:10.1016/j.cageo.2016.08.003.