      [range,ln,lt]=m_lldist([-123-6/60 lons(k)],[49+13/60  lats(k)],40);<br>      m_line(ln,lt,'color','r','linewi',2);<br>      m_text(ln(end),lt(end),sprintf('%s - %d km',cities{k},round(range)));<br>    end;<br>      <br>    title('Great Circle Routes','fontsize',14,'fontweight','bold');<br></pre>
<center><img src="./private/extblueocean.gif"><br>
<br>
</center>
<h2><a name="satellite_examples"></a>Examples of satellite data
manipulation</h2>
<h4><a name="1._Global_SST"></a>1. Global SST (or any variabl