Sentences with phrase «average temperature rise most»

The Amazon is referred to as a climate tipping point because research shows following a 21st century global average temperature rise most of the Amazon basin may dry out, leading to a massive biome shift — accompanied by many gigatonnes of extra CO2 emissions and almost unimaginable biodiversity loss, placing the cascading Anthropocene Extinction in top gear.

Not exact matches

But they've been especially interested in the most recent period of abrupt global warming, the Bølling - Allerød, which occurred about 14,500 years ago when average temperatures in Greenland rose about 15 degrees Celsius in about 3,000 years.

In its most recent study of the impact of climate change, the Bureau of Meteorology noted that average temperatures across Australia have increased by almost 1 °C since 1910, and could rise by up to 5 °C by 2070.

Temperature increases close to or above the average.61 degrees F rise were seen in some of the world's most popular waters, including Lake Tahoe (+.97 F by hand, +1.28 by satellite), the Dead Sea (+1.13 F), two reservoirs serving New York City, Seattle's Lake Washington (+.49 F), and the Great Lakes Huron (+1.53 F by hand, +.79 by satellite), Michigan (+.76 F by hand, +.36 by satellite), Ontario (+.59 F) and Superior (+2.09 F by hand measurement, +1.44 F by satellite).

A striking characteristic of the most recent 21st Century negative phase of the IPO is that on this occasion global average surface temperatures continued to rise, just at a slower rate.

However, both of these strategies create a major risk that average temperatures will rise above the 2 °C goal — a target set by international agreement in order to avoid the most dire consequences of climate change.

Earth's average temperature has remained more or less steady since 2001, despite rising levels of atmospheric carbon dioxide and other greenhouse gases — a trend that has perplexed most climate scientists.

This translates into an average temperature rise of 4.3 C over land in the northern hemisphere where most of the world's population lives, and even more in urban areas.

The most recent report concluded both, that global temperatures are rising, that this is caused largely by human activities and, in addition, that for increases in global average temperature, there are projected to be major changes in ecosystem structure and function with predominantly negative consequences for biodiversity and ecosystems, e.g. water and food supply.

Since humans began burning fossil fuels on a large scale, the global average temperature has risen 1.4 degrees Fahrenheit (0.8 degrees Celsius), with most of the increase occurring since 1970.

The most severe impacts of climate change — damaging and often deadly drought, sea - level rise, and extreme weather — can only be avoided by keeping average global temperatures within 2 degrees C (3.6 degrees F) of pre-industrial levels.

The most rapid warming - induced die - back of the Amazon rainforest probably occurs at a global average temperature rise from 1 to 3 degrees Celsius above the pre-industrial climate.

They found that average temperatures had remained relatively stable for most of the past millennia, but had started to rise steeply around 1900, when the Industrial Revolution kicked into full gear in Europe and North America, with new factories and automobiles pumping new sources of carbon dioxide emissions.

Scientists had tried to look into the future by extrapolating the visible trends and forces along a single line, calculating a most likely outcome within a range of possibilities: «global average temperature will rise three degrees plus or minus 50 %» or the like.

Although the increase in average surface temperature has stalled over the past 16 years, average temperatures in the deep ocean — where most of the extra heat in the climate system is stored — has continued to rise.

Average temperatures have risen in most states since 1901, with seven of the top 10 warmest years on record occurring since 1998.

Our results show that the average temperature of the earth's land has risen by two and a half degrees Fahrenheit over the past 250 years, including an increase of one and a half degrees over the most recent 50 years.

If countries instead abide by the pledges to cut carbon emissions after 2020 that they each made voluntarily ahead of the Paris climate summit, the average temperature will likely go up by at least two degrees Celsius, a less - than - catastrophic situation that could «still destroy most coral reefs and glaciers and melt significant parts of the Greenland ice cap, bringing major rises in sea levels,» according to The Guardian.

Average temperatures were rising, though without too many hot extremes, and they were rising most of all in the Arctic where the sea ice was receding.

The study predicts average annual temperatures in New York state will rise by 4 to 9 degrees by 2080 and precipitation will rise by 5 to 15 percent, with most of it in the winter....

The gradual rise in the global surface temperature from 1978 to 1998 appeared to confirm the statement in IPCC2007 p. 10 that, «Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations».

Many scientists argue that once CO2 concentrations reach 450 ppm it will be difficult to prevent global average temperatures from rising more than 2 °C above their level for most of human history.

Under Watson's tenure, the IPCC last year produced its third comprehensive assessment of the state of climate science, concluding that» [t] here is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities,» and predicting that average global temperatures will rise between 3 and 10 degrees Fahrenheit by the endof the century — conclusions reaffirmed last spring at White House request by the National Academy of Sciences.

Dr. Michaels, in a recent paper, projected that the global average temperature was most likely to rise about 3 degrees from 1990 to 2100.

From your link: «Accompanying a general rise in the average temperature, most of North America is experiencing more unusually hot days and nights.

(Its most recent report, in 2007, concluded that most of the twentieth - century increase in global average temperatures was «very likely» due to human activities, and that world temperatures could rise between 1.1 and 6.4 °C during the twenty - first century.)

The Earth's average surface temperature has risen significantly enough over the 20th century that if we made a map that compared any recent monthly average to the 20th - century average for that month, virtually the entire globe would have positive anomalies; most of the map would appear in shades of red.

These feedbacks are the primary source of uncertainty in how much the earth will warm (side note: the question that most climate scientists who study the forcing due to CO2 try to answer is, how much will the long - term globally averaged surface temperature of the earth rise due to an rapid rise of CO2 to twice its industrial level, that is, 270 ppm to 540 ppm; it is currently about 380 last time I checked, and rising at ~ 3ppm / year, although this rate of change appears to be accelerating).

But given that carbon dioxide levels were now substantially higher than anything in the past two millions of years, in either glacials or interglacials, it had become abundantly clear that the greenhouse effect was something we needed to take extremely seriously: even if the precise future increase in temperature was still an unknown quantity, with a fairly wide error - range, models indicated that for a doubling of carbon dioxide from pre-industrial levels, a rise of three degrees celsius as a global average was the most likely outcome.

A tipping point can be passed (and most likely several have been passed now with the Arctic melting fast) where the changes happen so fast that global average temperatures could rise rapidly.