Sentences with phrase «toward cooler areas»

Butterflies, for example, are shifting their home ranges toward cooler areas (ScienceNOW, 10 June 1999).

Not exact matches

When global climate cooled, areas experiencing what are today considered tropical conditions shrank back toward the equator, and the net rate of species appearance (the number of new species that evolved minus the number that went extinct) increased.

For example, if the Earth got cold enough, the encroachment of snow and ice toward low latitudes (where they have more sunlight to reflect per unit area), depending on the meridional temperature gradient, could become a runaway feedback — any little forcing that causes some cooling will cause an expansion of snow and ice toward lower latitudes sufficient to cause so much cooling that the process never reaches a new equilibrium — until the snow and ice reach the equator from both sides, at which point there is no more area for snow and ice to expand into.

Re 392 Chris Dudley — I don't understand what you mean by R ^ 2T ^ 4 — and there should be something about how optical depth is proportional to R, and also, if you're going a significant distance toward the center of such an object, there is the issue of spherical geometry; if the optical thickness is large enough across small changes in radius, then you don't need to account for the spherical geometry in the calculation of the flux per unit area as a function of the temperature profile and optical thickness; however, the flux per unit area outward will drop as an inverse square, except of course within the layers that are being heated through a different process (SW heating for a planet, radioactivity, latent and sensible heat loss associated with a cooling interior, gravitational potential energy conversion to enthalpy via compression (adiabatic warming) and settling of denser material under gravity (the later both leads to compression via increased pressure via increased gravity within the interior, and also is a source of kinetic energy which can be converted to heat)...

In southern Africa, scientists expect a migration of species toward cooler and moister areas.13 If we do nothing to reduce our emissions, 12 Etosha faces a net loss of around eight species of mammals by 2050.13 Unless we take meaningful action today, climate change could render Etosha and other national parks in dry or desert regions unable to fulfill their mandate: to protect mammalian biodiversity.13