Sentences with phrase «global warming threshold»

The climate is changing fast, and we must make sure to stay within the global warming threshold of two degrees Celsius.

Our analysis indicates however that we have passed a global warming threshold where we are having twice as frequent Katrina - magnitude surges.»

Not exact matches

Under current policies, the IEA puts the chances of holding global temperature increases to less than 2 degrees — the threshold at which global warming tips us into the danger zone — at a scant 2 percent.

The average global temperature change for the first three months of 2016 was 1.48 °C, essentially equaling the 1.5 °C warming threshold agreed to by COP 21 negotiators in Paris last December.

If global warming permanently crosses that threshold, it will likely cause small island states to be swallowed by the sea, coral to die and heat waves to become more common and severe.

The big question is will they be enough to help keep global warming below 2 °C, a politically agreed threshold generally deemed to represent the level of dangerous climate change.

Reducing the emissions of the greenhouse gases that cause global warming makes the most sense in the context of planetary boundaries, and many of the other thresholds collapse into it, Blomqvist and his colleagues note.

The results of this study show that substantial worsening of flood risk can be avoided by limiting the global warming to lower temperature thresholds.

Again, green groups and scientists have criticized the commission's 40 % proposal as insufficient to limit global warming to a temperature increase of 2ºC — which is widely considered as the threshold above which climate change would cause severe effects; Greenpeace, for instance, had hoped for a 55 % reduction.

The lower 48 states are projected to cross the 2 - degree C warming threshold about 10 to 20 years earlier than the global mean annual temperature, they note.

«Such a warming is a threshold after which continuous permafrost zone starts to be vulnerable to global warming.»

However, even if global warming would be limited to the internationally acknowledged threshold of 2 degrees Celsius of global warming, this would bear the risk of additional day - to - day variability between 8 and 24 percent above the pre-industrial level, according to the analysis.

Understanding how carbon flows between land, air and water is key to predicting how much greenhouse gas emissions the earth, atmosphere and ocean can tolerate over a given time period to keep global warming and climate change at thresholds considered tolerable.

As astronomical cycles they are predictable into the future and will cause another ice age probably in around 50,000 years (that depends on where the threshold for glaciation is, and what future CO2 levels will be at that time), but there is no way the Milankovich cycles could explain the current global warming.

Given that the trend in global SSTs has been attributed to increases in greenhouse gases in the atmosphere (17 — 19), it follows that the best explanation for this ecosystem aberration is anthropogenic warming that has passed a threshold of natural variability.

And you have to factor in the newly discovered underestimated global warming, which brings the threshold for non-linear behavior much closer.

Interested in status of latest estimate of when irreversible tipping point thresholds of various cascading feedback loops of global warming might be exceeded...

This is the difference between countries» pledged commitments to reduce emissions of heat - trapping greenhouse gases after 2020 and scientifically calculated trajectories giving good odds of keeping global warming below the threshold for danger countries pledged to try to avoid in climate talks in 2010 (to «hold the increase in global average temperature below 2 °C above pre-industrial levels»).

Bill McKibben writes on body of science pointing to a very low «safe» long - term threshold for carbon dioxide concentrations — 350 parts per million — which was hit and passed in 1988, around the time McKibben and I began writing on global warming.

Two studies out Wednesday — one on energy trends, one on climate as a security issue — bode poorly for those seeking to prevent global warming from passing dangerous thresholds.

The climate scientist Simon Donner, who joined Gleick in signing a recent letter to The Wall Street Journal rebutting an op - ed article by other scientists questioning the seriousness of global warming, weighed in on the downside of lowering ethical thresholds in the name of a worthy mission:

Dr Michael E Mann, serial litigant and Mustafa Prize winner, has a new column out, as he does every couple of days, called «Why Global Warming Will Cross a Dangerous Threshold in 2036».

But scientists were soon compiling evidence that the risks of global warming became fairly daunting somewhere above the 2 °C threshold: rapid sea - level rise, the risk of crop failure, the collapse of coral reefs.

All emission targets considered with less than 60 % global reduction by 2050 break the 2.0 threshold warning this century, a number that some have argued represents an upper bound on manageable climate warming.

The suggestion to, as Victor's and Kennel's article is titled, «Ditch the 2 ° C warming goal,» has unleashed fury from many climate advocates, particularly those who have worked for years to brand the importance of the two - degrees threshold into the global body politic.

Scientists have warned that if greenhouse gas emissions continue to rise, we will pass the threshold beyond which global warming becomes catastrophic and irreversible.

Following the signing of the Paris Agreement in December 2015, a targeted focus has emerged within the scientific community to better understand how changes to the global climate system will evolve in response to specific thresholds of future global mean warming, such as 1.5 ◦ C or 2 ◦ C above «pre-industrial levels».

While the Earth seems to be managing the steady increase in atmospheric carbon dioxide relatively well so far (although the effects of this increase may not be felt for many decades to come), there are concerns that passing the 400 parts per million atmospheric carbon dioxide threshold will bring the Earth's atmosphere closer to a tipping point at which global warming accelerates rapidly with dire consequences for mankind and other creatures on Earth.

Solar activity was well ABOVE threshold values late last century to support global warming regardless if one believes it was a modern solar maximum or not.

And apparently we're not doing much to stop it: according to Professor Kevin Anderson, one of Britain's leading climate scientists, we've already blown our chances of keeping global warming below the «safe» threshold of 1.5 degrees.

That 2 °C constituted a clear threshold below which global warming would be «acceptable» and «safe» and above which it was «dangerous» was always a fairly arbitrary conceit.

Two degrees of global warming above the preindustrial level is widely suggested as an appropriate threshold beyond which climate change risks become unacceptably high.

Defines «reporting entity» to mean: (1) a covered entity; (2) an entity that would be covered if it had emitted, produced, imported, manufactured, or delivered in 2008 or any subsequent year more than the applicable threshold level of carbon dioxide; (3) other entities that EPA determines will help achieve overall goals of reducing global warming pollution; (4) any vehicle fleet with emissions of more than 25,000 tons of carbon dioxide equivalent on an annual basis, if its inclusion will help achieve such reduction; (5) any entity that delivers electricity to a facility in an energy - intensive industrial sector that meets the energy or GHG intensity criteria.

Williams IN, Pierrehumbert RT and Huber M 2009: Global warming, convective threshold and false thermostats.

In an interview with Yale Environment 360 contributor Diane Toomey, Victor lays out his criticisms of the 2 - degree threshold, contending it has failed to position policy makers to take serious action on mitigating global warming, and he discusses the «basket of indicators» that he and his co-author, Charles Kennel, director emeritus at the Scripps Institution of Oceanography, are suggesting be used instead.

World leaders are ostensibly committed to keeping the increase in average global temperature below 2 °C relative to pre-industrial levels — the threshold beyond which the most catastrophic effects of global warming would be triggered.

estimated the annual mean global surface warming threshold for nearly ice - free Arctic conditions in September to be ~ 2 °C above...

Circles correspond to years when the warming threshold is first exceeded and squares correspond to years when the global mean temperature has stabilised.

«we have probably crossed the threshold where Katrina magnitude hurricane surges are more likely caused by global warming than not.»

New calculations by the author indicate that if the world continues to burn fossil fuels at the current rate, global warming will rise to two degrees Celsius by 2036, crossing a threshold that will harm human civilization.

Wilmking et al 2004 Recent climate warming forces contrasting growth responses of white spruce at treeline in Alaska through temperature thresholds Global Change biology 10: 1724

Four vegetation models display discontinuities across 4 °C of warming, indicating global thresholds in the balance of positive and negative influences on productivity and biomass.

https://www.ncdc.noaa.gov/global-warming/temperature-change «CO2 - forced climate thresholds during the Phanerozoic» «Climate Sensitivity in the Geologic Past» «Synchronous Change of Atmospheric CO2 and Antarctic Temperature During the Last Deglacial Warming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciationwarming/temperature-change «CO2 - forced climate thresholds during the Phanerozoic» «Climate Sensitivity in the Geologic Past» «Synchronous Change of Atmospheric CO2 and Antarctic Temperature During the Last Deglacial Warming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciationWarming» «Global warming preceded by increasing carbon dioxide concentrations during the last deglaciationwarming preceded by increasing carbon dioxide concentrations during the last deglaciation»

That kind of agreement would drive ambitious reductions in the decades to come and put us on track to keeping global warming below the 2 degree threshold.

Global investment in clean technologies is now at about $ 300bn (# 180bn) a year, but according to the International Energy Agency, this would need to reach $ 1tn by 2030 in order to keep within a 2C warmer world, the threshold above which climate change would become catastrophic.

Problem is, it's pretty much just a retread of the path the U.S. is already on, which isn't enough to keep global warming from crossing the «dangerous» two degree Celsius threshold — a point above which scientific consensus paints an increasingly bleak future, with global impacts capable of destabilizing human society.

Just as intelligent design is a threshold question between nonscience and conjectures, anthropogenic global warming (AGW) is a threshold question between conjectures and hypotheses.

Uncertainties are such that IPCC (12) put the threshold at ≈ 1.9 — 4.6 °C global warming (above preindustrial), which is clearly accessible this century.

The report further notes that only major institutional and technological change will result in a better than even chance that global warming will not exceed this threshold.

Only through this can we limit the devastation that will result if global warming is to exceed substantially the critical threshold of 2C.