Sentences with phrase «under greenhouse gas emission scenarios»

The United Nations» Intergovernmental Panel on Climate Change (IPCC) fifth assessment report, the first part of which was released in September 2013 along with a Summary for Policymakers, found that «warming of the climate system is unequivocal» and will continue under all greenhouse gas emissions scenarios.

Not exact matches

Politics of deferred gratification Under one of the additional scenarios, known as RCP 4.5, humans take longer to reduce greenhouse gas emissions but eventually do so, and under the other, known as RCP 8.5, carbon dioxide concentrations continue to rise through Under one of the additional scenarios, known as RCP 4.5, humans take longer to reduce greenhouse gas emissions but eventually do so, and under the other, known as RCP 8.5, carbon dioxide concentrations continue to rise through under the other, known as RCP 8.5, carbon dioxide concentrations continue to rise through 2100.

Under the worst - case scenario (RCP 8.5), which assumes that greenhouse gas emissions continue to rise throughout the 21st century, the authors show the potential for extremely large net increases in temperature - related mortality in the warmer regions of the world.

Coffel and Radley Horton of Columbia University projected the number of hot summer days under a worst - case greenhouse gas emission scenario for

Global temperatures could rise dramatically in 2100 compared with current conditions (dark red areas) under some scenarios for global greenhouse gas emissions.

«This is worrisome given that the temperature in the study region is predicted to rise by as much as 2 degrees by midcentury under the range of plausible greenhouse gas emissions scenarios,» said Avery Cohn, aassistant professor of environment and resource policy at Tufts, who led the work while he was a visiting researcher at Brown.

According to the commission's own impact assessment, the union is on track to meet the current target: Under a «business - as - usual» scenario, total greenhouse gas emissions are already expected to drop by 24 % in 2020 and 32 % in 2030 compared with 1990 levels.

She and her team then projected excess deaths from heat under a low and a high greenhouse gas emissions scenario, incorporating adaptation patterns.

The researchers analyzed climate suitability projections over time for 513 species across 274 national parks, under a high and low greenhouse gas emission scenario.

To get a sense for how this probability, or risk of such a storm, will change in the future, he performed the same analysis, this time embedding the hurricane model within six global climate models, and running each model from the years 2081 to 2100, under a future scenario in which the world's climate changes as a result of unmitigated growth of greenhouse gas emissions.

Even under a more moderate scenario where greenhouse gas emissions peak in 2040, 100 - year extreme sea levels could increase by 57 centimeters, or nearly 2 feet, on average, by the end of the century, with these events occurring every few years, according to study's authors.

Under both modest and high greenhouse gas emissions scenarios, temperatures in the Colorado River Basin are projected to rise by 5 degrees Fahrenheit compared with the 20th - century average.

Meehl and his colleagues used two sophisticated computer models of global climate to predict what would happen under various scenarios for greenhouse gas emission controls, taking into account the oceanic time lag.

Our analyses focused on projecting the possible range of temperature and precipitation amounts in Montana, under our chosen greenhouse gas emission scenarios.

(above) Percent increase in number of days per month exceeding the threshold cold temperatures necessary to cause approximately 50 % mortality in mountain pine beetle populations as projected under two greenhouse gas emission scenarios (i.e., representative concentration pathways; see Climate chapter) at mid century and end - of - century.

These results and the emerging additional regions of highest climate change vulnerability under high emissions scenarios (Figures S7, S8, S9) suggest that global policies that mitigate greenhouse gas emissions will substantially reduce species» climate change vulnerability.

The area of near - surface permafrost in the Northern Hemisphere is projected to decline by 20 % relative to today's area by 2040, and could be reduced by as much as two - thirds by 2080 under a scenario of high greenhouse gas emissions.

While the researchers, led by Shaun Marcott of Oregon State, conclude that the globe's current average temperature has not exceeded the warmth that persisted for thousands of years after the last ice age ended, they say it will do so in this century under almost every postulated scenario for greenhouse gas emissions.

Climate models show that by the end of this century, under a business - as - usual emissions scenario where there is no constraint in the amount of greenhouse gas emissions pumped into the atmosphere that ratio could climb to 50:1.

Shifting currents, increased freshwater input from melting sea ice and glaciers, and changes in upper and lower sea - level circulation patterns are already occurring, and they'll progress rapidly if anthropogenic greenhouse gas emission continues under a business - as - usual scenario.

Heat stress is projected to increase as a result of both increased summer temperatures and humidity.55, 61 One study projected an increase of between 166 and 2,217 excess deaths per year from heat wave - related mortality in Chicago alone by 2081 - 2100.62 The lower number assumes a climate scenario with significant reductions in emissions of greenhouse gases (B1), while the upper number assumes a scenario under which emissions continue to increase (A2).

Here we present a new index of the year when the projected mean climate of a given location moves to a state continuously outside the bounds of historical variability under alternative greenhouse gas emissions scenarios.

Models predict that the same summertime temperatures that ranked among the top 5 % in 1950 — 1979 will occur at least 70 % of the time by 2035 — 2064 in the U.S. if global emissions of greenhouse gases grow at a moderate rate (as modeled under the IPCC SRES A2 scenario).

Under a moderate emissions scenario (RCP4.5), where greenhouse gas concentrations in the atmosphere stabilise around the 2050s, ocean temperatures in the study area would be around 1.4 C warmer than a baseline period of the 2000s.

Lam and team used climate models from the Intergovernmental Panel on Climate Change to examine the economic impacts of climate change on fish stocks and fisheries revenues under two different emissions scenarios: a high - emission scenario, in which the rates at which greenhouse gases are pumped into the Earth's atmosphere continue to rise unchecked, and a low - emission scenario under which ocean warming is kept below two degrees Celsius.

Intergovernmental Panel on Climate Change model projections for 2100 exceed the full distribution of Holocene temperature under all plausible greenhouse gas emission scenarios.

These models project a large, 8.3 °C warming by the end of the century under a business as usual scenario, further highlighting the need for reductions in greenhouse gas emissions.

«The NASA Earth Exchange Global Daily Downscaled Projections (NEX - GDDP) dataset is comprised of downscaled climate scenarios for the globe that are derived from the General Circulation Model (GCM) runs conducted under the Coupled Model Intercomparison Project Phase 5 (CMIP5) and across two of the four greenhouse gas emissions scenarios known as Representative Concentration Pathways (RCPs).

The researchers» simulations suggest that because of sea level rise, Sandy - type surges have already become three times more likely between 1800 and 2000, and will become 4.4 times more likely by 2100, even under a moderate greenhouse gas emissions scenario.

Under the Plausible Scenario, this solution has a reduced contribution to avoided emissions during 2020 - 2050 of just 0.2 gigatons of carbon dioxide - equivalent greenhouse gas.

Global greenhouse gas emissions under different scenarios and the emissions gap in 2030 (Source: The UNEP)

Meehl and his colleagues used two sophisticated computer models of global climate to predict what would happen under various scenarios for greenhouse gas emission controls, taking into account the oceanic time lag.

Activity between 2012 - 2013 was focused on evaluating the emerging international archive of the World Climate Research Program Coupled Model Intercomparison Project phase 5 (WCRP CMIP5) and developing strategies to efficiently represent the diversity of results that CMIP5 will provide under the new «Representative Concentration Pathways» greenhouse gas emissions scenarios.

Using a global model based on the marginal abatement costs of 12 countries and regions, this paper estimates the contributions of the three Kyoto flexibility mechanisms to meet the total greenhouse gas emissions reductions required of Annex 1 countries under the three trading scenarios respectively.