Not exact matches
Yet if
greenhouse -
gas emissions from burning fossil fuels are not reduced at all, in a business - as -
usual scenario, water management will clearly not suffice to outweigh the negative climate effects.
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.
They looked at each of those conditions through, first, a business - as -
usual lens that assumes a lack of international climate - policy action with continued high rates of
greenhouse gas emissions and, second, an optimistic
scenario of reduced
emissions with climate change policy interventions.
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).
Help reduce agriculture - related
greenhouse gas emissions in rice - based farming systems by at least 28.4 megatons carbon dioxide (CO2) equivalent / year by 2022 and by a further 28.4 megatons CO2 equivalent / year by 2030, compared to business - as -
usual scenarios.
If nations continue to increase their
emissions of
greenhouse gases in a «business - as -
usual»
scenario, the U.S. ratio of daily record high to record low temperatures would increase to about 20 to 1 by midcentury and 50 to 1 by 2100.
Action of emerging economies could take several forms, such as sustainable development policies and measures, an improved and strengthened clean development mechanism, the setting up of plans for the sectors that generate most pollution so as to reduce their
greenhouse gas emissions compared with a business as
usual scenario.
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.
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).
The study warns that the new carbon market is unlikely to deliver South Korea's target of reducing
greenhouse gas (GHG)
emissions by 30 per cent below a business as
usual scenario by 2020.
The modeling results indicate that, if nations continue to increase their
emissions of
greenhouse gases in a «business as
usual»
scenario, the U.S. ratio of daily record high to record low temperatures would increase to about 20 - to - 1 by mid-century and 50 - to - 1 by 2100.
Riahi, K., and R.A. Roehrl, 2000:
Greenhouse gas emissions in a dynamics as
usual scenario of economic and energy development.
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 upper end of the
scenarios assessed, representing a cut of around a third in
greenhouse gas emissions from business - as -
usual projections, could assist in keeping concentrations of
greenhouse gases at 450 parts per million.
First was «business as
usual»: increasing
emissions of CO2 and other greenhouse gases with no mitigation action (the scenario used by the Intergovernmental Panel on Climate Change Special Report on Emissions Scenar
emissions of CO2 and other
greenhouse gases with no mitigation action (the
scenario used by the Intergovernmental Panel on Climate Change Special Report on
Emissions Scenar
Emissions Scenarios A1B).
Assuming we continue what you might call a business - as -
usual scenario, where we don't mitigate
greenhouse gas emissions, what we see are many places, particularly in the Southwest and Central Plains, that are going to see really significant drying, largely unprecedented at any time in the historical record, even going back 1,000 years.
It will also confirm the accelerated rate of change for impacts such as sea - level rise, the steady retreat of Arctic sea ice and quickened melting of ice sheets and glaciers, as well as offer more detail on
scenarios that will shape international negotiations over both short - term and long - term
greenhouse gas emissions, including how long «business as
usual» can be sustained without dangerous risk.
Based on a real world «business as
usual»
emissions scenario, with natural
gas displacing oil at its current pace and no carbon tax, I come up with a CO2 right about inline with RCP 6.0, «a mitigation
scenario, meaning it includes explicit steps to combat
greenhouse gas emissions (in this case, through a carbon tax) ``.
However, the study finds much less severe climate change — one - quarter to one - third that of the «business - as -
usual»
scenario — when
greenhouse gas emissions follow the alternative
scenario.
Additionally, the rate of
greenhouse gas emissions escalated way beyond business as
usual scenarios.
Riahi, K., and R.A. Roehrl, 2000:
Greenhouse gas emissions in a dynamics - as -
usual scenario of economic and energy development.
The results suggest substantial reductions in the country's
greenhouse gas emissions when these two policy changes are jointly implemented (relative to business - as -
usual baseline
scenario).
During the next 40 years,
greenhouse gas (GHG)
emissions in a business as
usual scenario will produce changes to river flow.