Sentences with phrase «significant cooling effect»

Melting ice has a significant cooling effect on heat content.

Ken, likewise I think CO2 has a significant cooling effect which is ignored... because it is an inconvenient truth that it does cool.

Natural temperature influences have had a very slight cooling effect, and natural internal variability appears to have had a fairly significant cooling effect over the past decade, but little temperature influence over longer timeframes.

As expected, Huber and Knutti find that greenhouse gases contributed to substantial warming since 1850, and aerosols had a significant cooling effect:

In fact, the major effect of significant volcanic eruptions is cooling due to the sulfate aerosols that they release (although in order to have a significant cooling effect, the eruption has to be large enough that it injects the aerosols into the stratosphere where they can stay around longer... and it apparently helps if the eruption is reasonably near to the equator).

As expected, Huber and Knutti find that greenhouse gases contributed to substantial warming since 1850, and aerosols had a significant cooling effect:

Mikel, Carl Sagan, in the aftermath of the first Gulf War but while the Kuwaiti oil fields were still burning, famously predicted significant cooling effects from the aerosols of the fires.

Not exact matches

Put together with an increased key interest rate to 1.25 % 8, the combined effect of stricter mortgage rules and raised interest rates could lead to a significant cooling of home prices in Canada this year.9, 10

The difference in the magnitude of the effect of fan use between warmer and cooler room temperatures was significant (P =.03 for the interaction term), whereas the differences in open window status, sleep position, bed sharing, and pacifier use did not reach significance (P =.13, P =.08, P =.59, and P =.16, respectively).

In tropical zones, forests have a significant, overall cooling effect.

The study found that changes in the menthol concentration did not seem to have any significant effect on skin cooling.

As the area of this cloud cover grows, it reflects more of the shortwave radiation; but as the clouds get taller, their greenhouse effect becomes more significant, counteracting about half of their total cooling effect.»

However, the trial was halted after data came in for the first 142 patients and it became clear that cooling had a significant effect in slowing or stopping hair loss, Nangia said.

• Cool mango scent • Simple lathering • No toxins or bad effect on the Yorkie's skin • 2 in 1 and you know that conditioning is significant for the Yorkie • Popular and top - notched dog - related brand

As a function of the NAO trend through to about 1996 there was a significant cooling pattern over Greenland (look at annual mean trends from 1950 to 1996 for maximum effect), but the longer you average over the less that is seen (though since there is still a positive NAO trend it is still a factor).

These latter two effects are expected to lead to slight warming, but the overall impact of land use changes is expected to be negative (i.e. a cooling)(Myhre and Myhre, 2003), although the uncertainty is still significant (maybe 0.5 W / m2 either way).

Warming must occur below the tropopause to increase the net LW flux out of the tropopause to balance the tropopause - level forcing; there is some feedback at that point as the stratosphere is «forced» by the fraction of that increase which it absorbs, and a fraction of that is transfered back to the tropopause level — for an optically thick stratosphere that could be significant, but I think it may be minor for the Earth as it is (while CO2 optical thickness of the stratosphere alone is large near the center of the band, most of the wavelengths in which the stratosphere is not transparent have a more moderate optical thickness on the order of 1 (mainly from stratospheric water vapor; stratospheric ozone makes a contribution over a narrow wavelength band, reaching somewhat larger optical thickness than stratospheric water vapor)(in the limit of an optically thin stratosphere at most wavelengths where the stratosphere is not transparent, changes in the net flux out of the stratosphere caused by stratospheric warming or cooling will tend to be evenly split between upward at TOA and downward at the tropopause; with greater optically thickness over a larger fraction of optically - significant wavelengths, the distribution of warming or cooling within the stratosphere will affect how such a change is distributed, and it would even be possible for stratospheric adjustment to have opposite effects on the downward flux at the tropopause and the upward flux at TOA).

Note to reporters: a scientist's willingness to make predictions of the future is an indication of the current level of understanding of the science; for example Hansen et al predicted that Pinatubo's eruption in 1991 would produce a significant aerosol cooling effect, and they were right; but would anyone be willing to predict that La Nina (assuming conditions set in) will result in a record hurricane season this fall?

``... point out that cooling trends are exactly as predicted by increasing greenhouse gas trends,... It is interesting to note that significant solar forcing would have exactly the opposite effect (it would cause warming)» (of the upper atmosphere)

Such events should result in a significant dip in the earth's temperature, but they are only having a relatively slight cooling effect.

For instance, the warming that began in the early 20th century (1925 - 1944) is consistent with natural variability of the climate system (including a generalized lack of significant volcanic activity, which has a cooling effect), solar forcing, and initial forcing from greenhouse gases.

The cooling and warming effects have not yet been properly quantified and will most likely turn out to be significant.

Interestingly, the paper «Climate Trends and Global food production since 1980» (Lobell, Schlenker, Costa - Roberts, in Sciencexpress, 5 May, Science 1204531) confirms my finding of the absence of climate change in the USA: «A notable exception to the [global] warming pattern is the United States, which produces c. 40 % of global maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of significant climate trends».

Memphis, I don't claim any CO2 effect with any certainty, but looking at the Earth's energy budget, it seems that a cooling effect is more likely, I don't know how significant.

First, if significant aerosol concentrations only cover, say, 10 % of the globe, doesn't that mean that to get a 0.5 degree cooling effect for the whole Earth, there must be a 5 degree cooling effect in the affected area.

And such significant cooling would have larger effect any any possible warming.

For instance the earth's global ocean already has an albedo close to zero so greenhouse gases are limited there and because GHGs modus operandi is restricting radiative cooling and the ocean is still free to cool evaporatively there is no first order significant effect of greenhouse gases over a liquid ocean.

We do not need models to anticipate that significant rises in atmospheric CO2 concentrations harbor the potential to raise temperatures significantly (Fourier, 1824, Arrhenius, 1896), nor that the warming will cause more water to evaporate (confirmed by satellite data), nor that the additional water will further warm the climate, nor that this effect will be partially offset by latent heat release in the troposphere (the «lapse - rate feedback»), nor that greenhouse gas increases will warm the troposphere but cool the stratosphere, while increases in solar intensity will warm both — one can go on and on

``... this robust old station, despite the urban effects, shows that there's been no statistically significant warming in Prague since 1800 (and at most 0.5 °C or so in 200 years, and I haven't subtracted any corrections for the intensification of Prague's urban heat island which may be as much as 0.6 °C per century and which would probably revert the 200 - year trend to a significant cooling!)

More clouds both drastically reduce energy input from the sun and simply slow release of what energy there is trapped in the lower troposphere, but the long term effect would be a fall in average temperature because of the significantly reduced input power but the atmosphere's ability to cool is aided by air current circulation whereby the warmer air rises above those low clouds and that infra - red is more easily re-emitted into space, whereby the low clouds now block that re-emission from hitting the ground again to any significant degree.

Last year, I did a calculation that estimated the cooling effects on the top layer of water from melting one meter of ice, and its significant.

I have already made it clear elsewhere that the additional resistor effect of human CO2 would be insignificant in relation to that from the rest of the air and the oceans together with the varying solar and oceanic heating and cooling effects but we still need to know for sure whether it is significant at all over periods of less than several hundred years because that may be the time we need to solve our energy, pollution, resource and population problems.

The thermosphere is so thin that the heating of it from direct solar impacts has no significant damping effect on the cooling process that goes on below when the sun is more active.

This is primarily based on the idea that the radiative flux would induce significant warming, but then the evaporation from the oceans and convective transport have a cooling effect.

The aerosol cooling in the models may be wrong to some extent, but is almost certainly in the ballpark enough so that the aerosols have compensated for the greenhouse gas effects on hurricane intensity to a significant degree, even if the exact degree is different than what's shown in our paper.

It seems that the most significant effect is actually not albedo there, but reduced evaporative cooling.

Most significant is the cooling of the stratosphere that has accompanied the recent warming of the troposphere and surface, a typical «fingerprint» of the effect of greenhouse gases.

Lansner and Pepke Pedersen (2018) point out that, due to the divergent rates of warming and cooling for land vs. ocean water, there is a significant difference in the range of temperature for the regions of the world influenced by their close proximity to oceans and coastal wind currents (ocean air affected, or OAA) and the inland regions of the world that are unaffected by ocean air effects and coastal wind because they are sheltered by hills and mountains or located in valleys (ocean air sheltered, or OAS).

This correlation provides evidence that the translation speed of a storm can exert a significant control on the intensity of storms by modulating the strength of the negative effect of the storm - induced sea surface temperature (SST) reduction on the storm intensification (i.e., the SST feedback): Faster - moving storms tend to generate weaker sea surface cooling and have shorter exposure to the cooling, both of which tend to weaken the negative SST feedback

Since solar effects, both direct and indirect, are more than sufficient to account for net estimated temperature change over the period of significant fossil fuel usage, have humans been warming or cooling the planet?

Since that timing has a significant impact on the long - term climate trend (almost as much as the cooling itself), it makes sense to take their chaotic effect out of the calculations so the underlying climate trend can be more reliably estimated.

Backing that up, NASA says that 1) sea surface temperature fluctuations (El Niño - La Niña) can cause global temperature deviation of about 0.2 °C; 2) solar maximums and minimums produce variations of only 0.1 °C, warmer or cooler; 3) aerosols from natural sources such as volcanic eruptions (Mount Pinatubo for example) have caused average cooling of 0.3 °C, but recent eruptions have had not had significant effect.

The peer reviewed journals in oceanography show many long term cooling effects of oceans that show not just slowing of warming but actual reversing and to date, significant trends in reduction in warming.

I also predict it will be accompanied by studies showing either: a) The quantity of atmospheric aerosol from the 40's -70's is much less than previously thought b) The cooling effect of aerosols is much less significant than previously thought

While the global effect is very limited, significant cooling is shown for Northern Europe, Northern Asia, and North America, with many other regions exhibiting a warming trend.

S. Ichtiaque Rasool and Stephen Schneider of NASA, for example, modelled the effects of pollution in the form of aerosols and sulphur emissions in the atmosphere and discovered that a significant increase of such pollution could - possibly - lead to a cooling episode.

Empirical evidence and simulations (20, 21) show that agricultural irrigation, which is now more common, has a significant regional cooling effect.

I don't know if the amounts of SO2 needed to cool the Earth will have an significant effect on the acidity of the oceans.