Sentences with phrase «usual scenario global»

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He cited several studies showing that a large number of species on the planet would become extinct in a «business as usual» global warming scenario.

«The consequences of sticking to a «business - as - usual» scenario are unthinkable,» says Zhaohai Bai, an associate professor at the Chinese Academy of Sciences and lead author of a paper from a multinational team of environmental scientists published today in Global Change Biology.

In addition to a business - as - usual scenario, the team ran its simulations under two mitigation scenarios, previously proposed by the U.S. Environmental Protection Agency, in which efforts are made to mitigate global warming to 2 and 3 degrees Celsius, relative to pre-industrial times.

The analysis follows previous studies that show that a business - as - usual scenario, which assumes a continued growth of global emissions, would deliver a warming increase of 4.5 °C by 2100.

The UN Intergovernmental Panel on Climate Change (IPCC) has estimated that the average global warming in this century will rise by 4 °C in a business - as - usual scenario.

A «business - as - usual» climate scenario (RCP8.5) will lead to another 74 centimeters of global average sea - level rise by 2100.

First, the IPCC SRES (2000) states explicitly that «There is no business - as - usual scenario» (p. 27); and secondly, the population assumptions underlying A2 are totally unrealistic: the scenario assumes an end - century global population of 15.1 billion.

To derive the climate projections for this assessment, we employed 20 general circulation models to consider two scenarios of global carbon emissions: one where atmospheric greenhouse gases are stabilized by the end of the century and the other where it grows on its current path (the stabilization [RCP4.5] and business - as - usual [RCP8.5] emission scenarios, respectively).

First, the IPCC SRES (2000) states explicitly that «There is no business - as - usual scenario» (p. 27); and secondly, the population assumptions underlying A2 are totally unrealistic: the scenario assumes an end - century global population of 15.1 billion.

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«Our study indicates that if emissions follow a commonly used business - as - usual scenario, there is a 93 percent chance that global warming will exceed 4 degrees Celsius (7.2 degrees Fahrenheit) by the end of this century.

For the «business - as - usual» scenario RCP8.5, the model - mean changes in 2090s (compared to 1990s) for sea surface temperature, sea surface pH, global O2 content and integrated primary productivity amount to +2.73 °C, − 0.33 pH unit, − 3.45 % and − 8.6 %, respectively.

Raw climate model results for a business - as - usual scenario indicate that we can expect global temperatures to increase anywhere in the range of 5.8 and 10.6 degrees Fahrenheit (3.2 to 5.9 degrees Celsius) over preindustrial levels by the end of the century — a difference of about a factor of two between the most - and least - severe projections.

It compared coal owners» business as usual plans and member state phase - out policies with the International Energy Agency's Beyond 2 °C Scenario (IEA B2DS), which phases out all coal power in the EU by 2030 and gives a 50 % chance of limiting global warming to 1.75 °C.

The science is clear to me and to most experts in the various fields associated with climate science: Humans are causing most of the observed global warming in the past several decades and, if we continue emitting GHGs under a «business as usual» scenario, it will become increasingly difficult and costly to adapt to the changes that are likely to occur.

The emissions scenarios included business as usual (BAU) and three other scenarios (B, C, D) in which global human greenhouse gas emissions began slowing in the year 2000.

To counter this business - as - usual scenario, the Stern Review proposes a climate stabilization regime in which greenhouse gas emissions would peak by 2015 and then drop 1 percent per year after that, so as to stabilize at a 550 ppm CO2e (with a significant chance that the global average temperature increase would thereby be kept down to 3 °C).

Using 1860 to 2005 as the historical period, this index has a global mean of 2069 (± 18 years s.d.) for near - surface air temperature under an emissions stabilization scenario and 2047 (± 14 years s.d.) under a «business - as - usual» scenario.

Under the IPCC Business As Usual emissions scenario, an average rate of global mean sea level rise of about 6 cm per decade over the next century (with an uncertainty range of 3 — 10 cm per decade).

Unless action is taken, global HFC emissions could reach 5.5 — 8.8 GtCO2e per year in 2050, equivalent to 9 — 19 % of projected global CO2 emissions under a business - as - usual scenario.

Even a combination of approaches could not stop global warming increasing by a lot more than 2 °C by 2100 under the notorious «business as usual» scenario.

The red line with yellow range represents the warming to come over the next 90 years in one of the more moderate IPCC business - as - usual emissions scenarios (A1B - rapid global economic growth with a balanced emphasis on all energy sources).

Theclimatebet.comtracks monthly data on global mean temperatures to show how our bet would have fared had Mr Gore been willing to bet the IPCC «business as usual» scenario against my bet on «no trend.»

Projected global average temperature rise above pre-industrial levels under a range of future scenarios, «business as usual» (BAU), which assumes no mitigation efforts are made (RCP8.5); «mitigation», which assumes moderate emissions (RCP4.5) without negative emissions, «carbon dioxide removal» (CDR), which assumes moderate emissions with long - term CO2 removal; and «solar radiation management» (SRM), which is the same as the CDR pathway but also includes enough SRM to limit temperatures to 1.5 C by 2100.

Over that time, the globally averaged temperature difference between the depth of an ice age and a warm interglacial period was 4 to 6 °C — comparable to that predicted for the coming century due to anthropogenic global warming under the fossil - fuel - intensive, business - as - usual scenario.

Those include recognizing three realities: first that billions of people are on an irreversible course toward living something that looks like a modern life, replete with the choices, comfort, and security that those of us in the rich world take for granted; second, that everyone on the planet and billions more likely to come can and should follow that path if they choose it; and third, that achieving that outcome while limiting global temperatures to something likely above two degrees but well below the business - as - usual scenario will require developing zero - carbon technologies capable of powering that world.

It is well documented that global temperature acceleration has significantly paused since 1998, despite the global CO2 emissions growth rate easily exceeding the business - as - usual (BAU) scenarios presented by NASA's James Hansen way back in 1988.

The IPCC chose to plot the «business as usual» scenario (RCP 8.5 — continued increase in GHG emissions), then scenarios for global GHG emission peaks in the year 2080 (RCP 6.0), 2040 - 2050 (RCP 4.5), and 2020 (RCP 2.6).

The scenario on the left assumes drastic and immediate global reductions in fossil fuel usage; the right assumes «business as usual» just continues.

(1) A «business as usual» approach based on predictions from the Food and Agriculture Organization of the United Nations; this scenario was used as the reference point for the study (2) A «healthy global diets» scenario in which people adopt the global dietary guidelines for healthy eating and consume just enough calories to maintain a healthy body weight; it includes at least 5 servings of fruits and vegetables, less than 50g of sugar, and a max of 43g of meat daily (3) A vegetarian diet that includes eggs and dairy, 6 servings of fruits and vegetables, and 1 portion of pulses (4) A completely plant - based vegan diet, with 7 servings of fruits and vegetables and 1 portion of pulses

Like Indonesia and several other emerging countries, Mexico isn't using a baseline year, but instead proposes to reduce its emissions to a level 22 % below a «business as usual» scenario by 2030, with that target nearly doubling to 40 % below business as usual if it receives technical and financial support within the context of a global agreement.

Other scientists had already established that if global temperatures rise by 4 °C this century − in the notorious business - as - usual scenario in which humans go on burning fossil fuels and depositing ever more carbon dioxide in the atmosphere − then some parts of the globe could become intolerably hot for at least part of the day, and potentially uninhabitable.