thermal equator

British  

noun

1. an imaginary line round the earth running through the point on each meridian with the highest average temperature. It lies mainly to the north because of the larger landmasses and therefore greater summer heating

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Example Sentences

The thermal equator at length reaches the base of Mt.

From Life: Its True Genesis by Wright, R. W.

But, as the equatorial zone extends fifteen degrees both ways from the thermal equator, its southern limit now rests on the geographical equator, and accordingly encircles the base of our "mount of refuge."

From Life: Its True Genesis by Wright, R. W.

Tolima in advance of the thermal equator, now fleeing in dismay before the southern Ice-monarch, with all his isochimenal hosts in mad pursuit of their invaders.

From Life: Its True Genesis by Wright, R. W.

But how would these forms have managed, even then, to cross the thermal equator and secure a permanent habitat in the present warm and cold temperate zones of that continent?

From Life: Its True Genesis by Wright, R. W.

And the same law holds good as to the marine fauna and flora, each specific form being confined to its own sea-depth, or distance north or south from the thermal equator.

From Life: Its True Genesis by Wright, R. W.