How to pronounce“isotherms”in English

The isotherms around the Rocky Mountains dip down in both summer and winter.

On the isotherm maps, the greatest temperature difference from east to west happens where the isotherms leave large landmasses to cross the oceans.

These two isopleth maps, or maps that show the continuous distribution of data, show the average air temperatures around the world in January and July using isotherms, or lines

In the course of a year, as the latitude where the Sun is directly overhead shifts, the isotherms follow.

Let’s follow the 15 degree Celsius isotherm. It lies over central Florida in January. By July it’s moved farther north where it then loops into northwestern Canada. But the isotherms