Sentences with phrase «cooling temperatures over the ocean»

ACCORDING to Josefino Comiso et al, in the the Journal of Climate, cooling temperatures over the ocean and surrounding Antarctica are driving the increase in Antarctic sea - ice...

Not exact matches

The other global flu pandemics over the past century — in 1957, 1968 and 2009 — also followed cooler sea surface temperatures in the Pacific Ocean.

Compared to seasonal norms, the coldest place in Earth's atmosphere in May was over the northern Pacific Ocean, where temperatures were as much as 2.08 C (about 3.74 degrees Fahrenheit) cooler than seasonal norms.

«The surge in global temperatures since 1977 can be attributed to a 1976 climate shift in the Pacific Ocean that made warming El Niño conditions more likely than they were over the previous 30 years and cooling La Niña conditions less likely» says corresponding author de Freitas.

A well - known issue with LGM proxies is that the most abundant type of proxy data, using the species composition of tiny marine organisms called foraminifera, probably underestimates sea surface cooling over vast stretches of the tropical oceans; other methods like alkenone and Mg / Ca ratios give colder temperatures (but aren't all coherent either).

Ocean temperatures experience interannual variability and over the past 3 decades of global warming have had several short periods of cooling.

Because of their effect on lowering the temperature gradient of the cool skin layer, increased levels of greenhouse gases lead to more heat being stored in the oceans over the long - term.

Cooling sea - surface temperatures over the tropical Pacific Ocean — part of a natural warm and cold cycle — may explain why global average temperatures have stabilized in recent years, even as greenhouse gas emissions have been warming the planet.

A sea breeze, which is caused by the temperature and pressure difference between warm areas inland and the cool air over the ocean, often develops on warm summer days as well, increasing the on - shore flow pattern and maintaining a constant flow of marine stratus clouds onto the coastal areas.

Given how much yelling takes place on the Internet, talk radio, and elsewhere over short - term cool and hot spells in relation to global warming, I wanted to find out whether anyone had generated a decent decades - long graph of global temperature trends accounting for, and erasing, the short - term up - and - down flickers from the cyclical shift in the tropical Pacific Ocean known as the El Niño — Southern Oscillation, or ENSO, cycle.

Nice misconception you have going there but the real argument is that CO2 can lower the temperature gradient of the cool skin layer, which slows the heat loss to the atmosphere and increased levels of greenhouse gases lead to more heat being stored in the oceans over the long - term.

Let's compare the warming and cooling patterns for lower troposphere temperatures over the oceans to a spatially complete, satellite - enhanced sea surface temperature dataset, Reynolds OI.v2.

And for the period of 1997 to 2012, there are no similarities between the warming and cooling patterns for lower troposphere temperatures over the oceans and the satellite - enhanced sea surface temperature data.

My opinion expressed elsewhere is that almost all the temperature changes we observe over periods of less than a century are caused by cyclical changes in the rate of energy emission from the oceans with the solar effect only providing a slow background trend of warming or cooling for several centuries at a time.

Christy is correct to note that the model average warming trend (0.23 °C / decade for 1978 - 2011) is a bit higher than observations (0.17 °C / decade over the same timeframe), but that is because over the past decade virtually every natural influence on global temperatures has acted in the cooling direction (i.e. an extended solar minimum, rising aerosols emissions, and increased heat storage in the deep oceans).

Map of air temperature anomalies for December 2009, at the 925 millibar level (roughly 1,000 meters [3,000 feet] above the surface) for the region north of 30 degrees N, shows warmer than usual temperatures over the Arctic Ocean and cooler than normal temperatures over central Eurasia, the United States and southwestern Canada.

Lead author de Freitas said in a press release, â $ œThe surge in global temperatures since 1977 can be attributed to a 1976 climate shift in the Pacific Ocean that made warming El Nià ± o conditions more likely than they were over the previous 30 years and cooling La Nià ± a conditions less likely.»

By examining the spatial pattern of both types of climate variation, the scientists found that the anthropogenic global warming signal was relatively spatially uniform over the tropical oceans and thus would not have a large effect on the atmospheric circulation, whereas the PDO shift in the 1990s consisted of warming in the tropical west Pacific and cooling in the subtropical and east tropical Pacific, which would enhance the existing sea surface temperature difference and thus intensify the circulation.

Overall temperatures in June through mid-July have been near normal over much of the Arctic Ocean region, with somewhat cooler than normal conditions on the Atlantic side, as well as part of the Chukchi Sea.

Over ocean stretches with a positive SST anomaly air convection is higher (as the temperature difference between the warm sea surface and the cool air higher up in the troposphere is greater), so a higher likelihood for the formation of depressions exists and more precipitation is to be expected.

The best way to envision the relation between ENSO and precipitation over East Africa is to regard the Indian Ocean as a mirror of the Pacific Ocean sea surface temperature anomalies [much like the Western Hemisphere Warm Pool creates such a SST mirror with the Atlantic Ocean too]: during a La Niña episode, waters in the eastern Pacific are relatively cool as strong trade winds blow the tropically Sun - warmed waters far towards the west.

The subsiding air warms by compression and, coupled with cooling of the lowest layers overlying the cold ocean currents normally found off the west coasts of the continents, forms a pronounced temperature inversion (warm air over cold), called the trade - wind inversion.

But the dry air column holds a lot less energy so when the sun goes down and the surface is no longer heating it through conduction and radiation the column cools rapidly hence the great diurnal temperature range of the desert and the almost total lack of diurnal temperature change over the ocean.

«In our mor recent global model simulations the ocean heat - uptake is slower than previously estimated, the ocean uptake of carbon is weaker, feedbacks from the land system as temperature rises are stronger, cumulative emissions of greenhouse gases over the century are higher, and offsetting cooling from aerosol emissions is lower.

It is hard to say with the surface data we have, but it appears that Arctic Ocean cyclones are still warmer than the High pressure over the gyre, of interest is when these temperatures will be equal, then the switch should happen when cyclones cool surface air instead.

The record temperatures occurred despite a moderate occurrence of La Niña, a phenomenon over the Pacific Ocean that tends to lead to cooler temperatures at the surface, affecting the global mean.

Over the same period of time as the upper ocean is supposed to have warmed by some 0.05 C (according to ARGO), the sea surface temperature (HADSST2) has cooled by 0.063 C.

So while Antarctica warms little, or even cools, the Arctic Ocean's temperature increases to such an extent that heat is actually lost to the atmosphere over the Arctic.

With the approach of winter, temperatures in Northern Hemisphere begin to cool more rapidly — and the region of maximum north - south temperature differential over the Pacific Ocean starts to shift southward.

Climate scientists say the new high - precision forecast predicts temperatures will stall because of natural climate effects that have seen the Southern Ocean and tropical Pacific cool over the past couple of years.

Over the last month or so warm sea - surface temperature [SST] and upper - ocean heat content anomalies have increased in the near - equatorial central Pacific, while the SST cool tongue in the near - equatorial far - eastern Pacific has weakened, with warm anomalies now evident there.

Comparing the trend in global temperature over the past 100 - 150 years with the change in «radiative forcing» (heating or cooling power) from carbon dioxide, aerosols and other sources, minus ocean heat uptake, can now give a good estimate of climate sensitivity.

The generally greater cooling in land masses than over the ocean is mainly due to temperatures over land generally being more sensitive to global forcing, not to LU forcing being located in land masses.

Ocean temperatures experience interannual variability and over the past 3 decades of global warming have had several short periods of cooling... Argo takes measurements in the top 2000 metres of the oOcean temperatures experience interannual variability and over the past 3 decades of global warming have had several short periods of cooling... Argo takes measurements in the top 2000 metres of the oceanocean.

The models (and there are many) have numerous common behaviours — they all cool following a big volcanic eruption, like that at Mount Pinatubo in 1991; they all warm as levels of greenhouse gases are increased; they show the same relationships connecting water vapour and temperature that we see in observations; and they can quantify how the giant lakes left over from the Ice Age may have caused a rapid cooling across the North Atlantic as they drained and changed ocean circulation patterns.

In July, the Arctic Dipole Anomaly (DA) pattern that was dominant in June (which promotes clear skies, warm air temperatures, and winds that push ice away from coastal areas and encourages melt) was replaced by low sea level pressure (SLP) over the Arctic Ocean, leading to ice divergence (ice extent «spreading out») and cooler temperatures.