Sentences with phrase «century warming at»

Not exact matches

Marc Scott, a portfolio manager at American Century Investments, says that the warm weather in 2012 caused demand to fall by 12 % from the same period the year before.

The report found, among other things, that 43 of the lower 48 U.S. states have set at least one monthly heat record since 2010, sea levels are expected to rise between one and four feet by the end of this century, winter storms have increased in intensity and frequency, and the past decade was warmer than every previous decade in every part of the country.

Since its founding by steel magnate - turned - developer Henry Flagler at the turn of the century, Palm Beach has been the warm wintertime playground for the American elite.

«West Greenland Ice Sheet melting at the fastest rate in centuries: Weather patterns and summer warming trend combine to drive dramatic ice loss.»

Moderator's Remarks from Al Appleton, former Commissioner of the NYC Department of Environmental Protection and Senior Fellow at the Cooper Union: When we talk about addressing global warming, we're talking about disentangling 21st century society from fossil fuel.

«We are still sort of at the early stages of the global warming phenomenon, and CO2 is rising much faster this century than the last century.»

Heavier rainfall at the study sites from the year 0 to 400, and again during Europe's Medieval Warm Period, just before the Little Ice Age from about the year 800 to 1300, was probably caused by a centuries - long strengthening of El Niño.

Of course, summer temperatures when the warming portion of the wobble cycle peaked roughly 7,500 years ago were at least 0.8 degrees Celsius warmer than 20th - century average temperatures.

The study used simulations from the Community Earth System Model (CESM) run at the National Center for Atmospheric Research (NCAR) and examined warming scenarios ranging from 1.5 degrees Celsius all the way to 4 degrees Celsius (7.2 degrees Fahrenheit) by the end of the century.

The new study's results show the Alaska Range has been warming rapidly for at least a century.

The surge in melt events corresponds to a summer temperature increase of at least 1.2 - 2 degrees Celsius (2.2 - 3.6 degrees Fahrenheit) relative to the warmest periods of the 18th and 19th centuries, with nearly all of the increase occurring in the last 100 years.

Warming in the 21st century reduced Colorado River flows by at least 0.5 million acre - feet, about the amount of water used by 2 million people for one year, according to new research from the University of Arizona and Colorado State University.

In one study published in Geophysical Research Letters in 2007, scientists at the Max Planck Institute for Meteorology in Hamburg, Germany, estimated the mass redistribution resulting from ocean warming would shorten the day by 120 microseconds, or nearly one tenth of a millisecond, over the next two centuries.

Already, atmospheric levels of carbon dioxide, the leading greenhouse gas, are approaching 400 ppm, and at least the amount of warming caused by that level is likely by century's end.

The new study suggests that by the end of the century, about a third of all the drainage basins could experience reductions in runoff greater than 10 percent during at least one month of the warm season.

A century of digging at lower altitudes and in the warm Ukrainian plains rarely yielded more than skeletons or jewelry.

This is unacceptable at a time when leading scientists from all over the world are warning that greenhouse gases must be cut by at least 60 percent over the next half a century to avert the worst consequences of global warming.

And achieving any stabilization target — whether 2 degrees C of warming or 450 ppm or 1,000 gigatons of carbon added to the atmosphere by human activity — will require at least an 80 percent cut in emissions from peak levels by the end of this century and, ultimately, zero emissions over the long term.

Researchers now have hard evidence that the circulation that helps warm the North Atlantic did indeed abruptly slow or perhaps even stop for centuries at a time more than 100,000 years ago.

Time is running out: if global warming continues at its current rate, glaciers at an altitude below 3,500 metres in the Alps and 5,400 metres in the Andes will have disappeared by the end of the end of the 21st century.

Some show far more variability leading up to the 20th century than the hockey stick, but none suggest that it has been warmer at any time in the past 1000 years than in the last part of the 20th century.

Moreover, climate models suggest that, by the end of this century, Antarctica will have warmed less compared to the Arctic,» says Marc Salzmann, a researcher at the Institute for Meteorology, University of Leipzig in Germany.

It follows much discussion on the nature of global change in a warmer 21st Century at the COP23 Climate Negotiations in Bonn last week.

«We're now facing the potential for a warming of 2ºC or more in less than two centuries,» said Dr Dunkley Jones, «this is more than an order of magnitude faster than warming at the start of the PETM.

One thing is already clear: A warmer global atmosphere currently holds about 3 to 5 percent more water vapor than it did at the beginning of the 20th century, and that can contribute to heavier precipitation.

International negotiators at a United Nations - sponsored climate conference ending today in Bangkok repeatedly underscored the goal of keeping the amount of global warming in this century to no more than 2 ˚C.

The epicenter of agricultural production has moved north and west over the past half - century, and that trend will likely continue at an accelerated pace due to global warming, a new study finds.

If these glaciers retreat at a similar rate to what they did in the past decade, 30 of them would disconnect from warm ocean waters by the end of the century with that kind of travel distance, it says.

They then looked at what that meant for the temperature rise over the coming few decades, and found that global warming this century will indeed be slower than thought.

Further warming will not only «very likely» drive further such changes but also likely intensify droughts and tropical cyclones by late in the century, at least in the western North Pacific and North Atlantic.

Today levels are at 380 ppm and are projected to reach 450 to 550 by the end of the century — too warm.

Given those findings and the rest of the improved understanding of the climate system, the IPCC projects that if carbon dioxide gas emissions — the primary cause of warming — continue to grow at the recent rate, the world would warm 2oC above 19th - century levels by the middle of this century.

Professor Drijfhout said: «The planet earth recovers from the AMOC collapse in about 40 years when global warming continues at present - day rates, but near the eastern boundary of the North Atlantic (including the British Isles) it takes more than a century before temperature is back to normal.»

Instead, the rate of warming during the first fifteen years of the 21st century is at least as great as that in the last half of the 20th century, suggesting warming is continuing apace.

The Antarctic Peninsula has been warming rapidly for at least a half - century, and continental West Antarctica has been getting steadily hotter for 30 years or more.

For instance, if nothing is done to reduce the amount of heat - trapping gasses, such as carbon dioxide, in the atmosphere, Earth could be 5 to 15 degrees Fahrenheit (3 to 8 degrees Celsius) warmer by the end of century, said Sivan Kartha, a senior scientist at the Stockholm Environment Institute.

June — August 2014, at 0.71 °C (1.28 °F) higher than the 20th century average, was the warmest such period across global land and ocean surfaces since record keeping began in 1880, edging out the previous record set in 1998.

This so - called constant - composition commitment results as temperatures gradually equilibrate with the current atmospheric radiation imbalance, and has been estimated at between 0.3 °C and 0.9 °C warming over the next century.»

«So, working independently, several research teams have converged on almost identical results for warming over the past century at the global scale, but with periodic fine - tuning as additional information becomes available,» Holt and Field write.

June 2013 tied with 2006 as the fifth warmest June across global land and ocean surfaces, at 0.64 °C (1.15 °F) above the 20th century average of 15.5 °C (59.9 °F).

The warming of the WAIS is most worrisome (at least for this century) because it's going to disintegrate long before the East Antarctic Ice Sheet does «'' since WAIS appears to be melting from underneath (i.e. the water is warming, too), and since, as I wrote in the «high water» part of my book, the WAIS is inherently less stable:

With ENSO - neutral conditions present during the first half of 2013, the January — June global temperature across land and ocean surfaces tied with 2003 as the seventh warmest such period, at 0.59 °C (1.06 °F) above the 20th century average.

«Moreover, our estimate of 0.27 C mean surface warming per century due to land - use changes is at least twice as high as previous estimates based on urbanization alone7, 8.»

It has been estimated that to have at least a 50 per cent chance of keeping warming below 2 °C throughout the twenty - first century, the cumulative carbon emissions between 2011 and 2050 need to be limited to around 1,100 gigatonnes of carbon dioxide (Gt CO2).

October itself tied as the third warmest in 136 years of record - keeping, coming in at 1.31 °F (0.73 °C) above the 20th century average of 57.1 °F, according to NOAA.

At 6 °F (3.3 °C) above the 20th century average of 41.5 °F (5.3 °C), it was the warmest March since 2012.

It's interesting that you now say that attribution of 20th century warming is unimportant, just at a time when that begins to seem rather certain.

«Some feedback loop or other processes that aren't accounted for in these models — the same ones used by the IPCC for current best estimates of 21st Century warming — caused a substantial portion of the warming that occurred during the PETM (Palaeocene - Eocene thermal maximum of 55 million years ago)», oceanographer Gerald Dickens, a professor of Earth science at Rice University and study co-author said.

Warming temperatures over the next century, especially during spring, are likely to reduce snowpack at mid and low elevations.

«By the end of this century, as the climate warms, the rising demand for irrigation water and increased variability of the water supply may lead to regions with a severe shortage of water for irrigation,» said corresponding author Dr. Maoyi Huang, a climate modeler at PNNL.