Sentences with phrase «stable temperature difference»
Warwick found there was a fairly stable temperature difference with airport maxima throughout the record of Perth Regional Office from 1945 to 1992, although there was a significant increase from the late 1960s.
http://www.waclimate.net/ Not exact matches
The consistency of the differences between buoys & ships (0.12 C obs) shows that the ship records appear to be quite stable, and our temperature change estimates are good so long as we use this correction.
Even though I can't imagine gravity functioning as a Maxwell Demon, even though Caballero in section 2.17 both states and leaves as a student exercise the proof that the thermodynamic equilibrium state of a vertical column of gas is isothermal, there has been a lot of confusion and strange assertions about a gas arriving at a state because of bulk transport that sorts out temperature differences approximately adiabatically (neglecting conduction), but that is somehow thermodynamically stable without transport and with conduction in the end.
If you agree that the silver will transfer any heat at all between the two reservoirs as long as there is a temperature difference, the only possible way a thermal lapse can be stable is if the perturbation is damped out of the system and the lapse rate restored.
Ultimately, if you start the gas in any hydrodynamically stable initial state with a thermal gradient, a constant, it is absolutely trivial to show that entropy will strictly increase as heat is conducted between adjacent layers of the gas to reduce their temperature difference.
If any lapse rate is stable, the system violates the second law, as heat will flow through the silver for any difference in temperature until there is no difference in temperature, and therefore any steady state that still has a lapse rate must transport heat down the gas column on the left from colder to hotter (violating the second law all by itself, but it is so difficult for people to understand this, alas).
The danger in the current GW is not due to the difference between a stable climate at average 15oC (your current average temperature numbers are wrong) and a stable climate at average 20 or 22 or 25oC or what have you, it is due to the extremely rapid rate of change and the resulting instability and the loss of biodiversity.
The rock will rise to an even higher stable maximum temperature but the temperature increase between no blanket and one blanket will be greater than the difference between one blanket and two blankets.