Sentences with phrase «initial increase in warming»

Not exact matches

Similarly, in some countries in Southern Europe (Spain, Portugal, Greece) the initial increase in impacts at 1.5 °C turns into more uncertain projections for higher warming levels, due to a substantial reduction in annual rainfall.

It is actually the other way round: the increased warmth produces an increase in CO2, which in turn feeds back into the climate system and thus serves to amplify the initial warming, just as interest, after the initial prodding of a loan, feeds back into one's finances to amplify one's debt.

... interestingly in the grey gas case with no solar heating of the stratosphere, increasing the optical thickness of the atmosphere would result in an initial cooling of and in the vicinity of the skin layer (reduced OLR), and an initial radiative warming of the air just above the surface (increased backradiation)-- of course, the first of those dissappears at full equilibrium.

It also helps explain the initial cooling after the Industrial Revolution began (the smoke effect overwhelmed the relatively weak warming effect back then), the increase of global temperture during WW2 (shut down of industries) and decrease after WW2 (re-industrialization) and acceleration in the 1970's after the passage of the Clean Air Act.

A positive cloud feedback loop posits a scenario whereby an initial warming of the planet, caused, for example, by increases in greenhouse gases, causes clouds to trap more energy and lead to further warming.

Dr. Mann in the initial few seconds of your link did NOT say «models indicate that increased warming must come from the increase in CO2 because the models show no other mechanism».

Thus an increase of CO2 in the atmosphere, whatever the cause, will decrease the degassing of the warm parts of the oceans and increase the absorption by the cold parts of the oceans, even if warmer oceans were the initial cause of the increase.

The unrealized warming has been fairly constant over the past ~ 50 years whereas the radiative forcing increases the further back in time you choose your initial point.

27 January 2000: The Hektoria Glacier system is stable, but increased summer melting from climate warming in the 1980s and 1990s affected the glacier system in two ways: (1) a seasonal speedup from summer melt water percolating through the glacier ice to its base, and (2) initial retreat of the Larsen Ice Shelf due to the effects of melt ponds (downstream from this image).

One of the key comments for me in M&W is — «On the other hand, limiting the validation exercise to these two blocks is problematic because both blocks have very dramatic and obvious features: the temperatures in the initial block are fairly constant and are the coldest in the instrumental record whereas the temperatures in the final block are rapidly increasing and are the warmest in the instrumental record.

What we have just proven is that for any isolated gas, in the absence of a source of external work — note that I do not care in this proof how or why the initial state of the gas with some sort of thermal lapse came about, whether or not there is gravity present or absent, whether or not the gas is a mixture or pure — if we move a dollop of heat from where it is warmer (cooling it) to where it is cooler (warming it) we increase the entropy of the Universe and such a fluctuation in the state of the gas is irreversible.

So far, the initial effect is still relatively small for two reasons: (i) part of that effect has been canceled temporarily by increases in sulfate aerosol, and (ii) the warming has been delayed because it takes a long time for the vast mass of the ocean to heat up.

To this point, the standard response to this myth has been that initial temperature increases have historically been caused by the Earth's orbital (Milankovitch) cycles, which in turn warm the oceans, causing them to release CO2, which in turn amplify the global warming.

You describe changes in the Earth's albedo at various places which no doubt will increase the warming from the initial solar or orbital event.

The resulting warming due to the water vapour is in fact larger than the initial warming due to the CO2 that forced it to happen, and this is the point of the Lacis paper - yes, water vapour is a more important greenhouse gas than CO2, but water vapour doesn't change systematically with time UNLESS CO2 is changing and initiating a warming that sets into motion the surface and atmospheric processes that allow water vapour to systematically increase.

Yet some people all too readily abandon logic and take that to mean that increasing CO2 in the absence of a initial change in insolation will not warm the atmosphere and thereby change climate.

-- First we increase the greenhouse gases — then that causes warming in the atmosphere and oceans — as the oceans warm up, they evaporate more H2O — more moisture in the air means more precipitation (rain, snow)-- the southern hemisphere is essentially lots of water and a really big ice cube in the middle called Antarctica — land ice is different than sea ice — climate models indicated that more snowfall would cause increases in the frozen H2O — climate models indicated that there would be initial increases in sea ice extent — observations confirm the indications and expectations that precipitation is increasing, calving rates are accelerating and sea ice extent is increasing.

The 800 - year lag between the beginnings of temperature increase and CO2 rise in the polar ice record is because the initial warming that provoked the end of the ice ages was caused by changes in the Earth's alignment and orbit around the sun; not anthropogenic CO2.