It is also worth remembering that the earlier we start cutting emissions the cheaper it will be to do so and we will also be able to reach a lower
stabilisation level for CO2 in the atmosphere.
There was a conference held at the begining of this year that went over this sort of thing, it was subtitled «Avoiding Dangerous Climate Change» and you can find the presentation [slides] that were presented at http://www.stabilisation2005.com/programme.html There's a lot of interesting things about possible thresholds,
stabilisation levels for CO2 and emission reduction pathways and the potential costs.
Not exact matches
As with the entire Golf range, the new GTD will feature class - leading
levels of safety with ABS, ESP (Electronic
Stabilisation Programme) and seven airbags, including
for the first time a knee airbag, all standard.
Also, as with the entire Golf range, the new GTI features class - leading
levels of safety with ABS, ESP (Electronic
Stabilisation Programme) and seven airbags, including
for the first time a knee airbag, all as standard.
Nevertheless, climate sensitivity is part of the puzzle, and it particularly matters if you are interested in
stabilisation scenarios, since it indicates what a particular equilibrium CO2
level will mean
for equilibrium climate.
30 more years of business - as - usual will make it impossible to keep temperatures from rising beyond Eemian
levels (see here
for some discussion of
stabilisation scenarios), and decisions (on infrastructure, power stations, R&D, etc.) that are being made now will determine the emissions
for decades to come.
Costs are relative to the baseline
for least - cost trajectories towards different long - term
stabilisation levels.
Many don't get this — but it goes
for both the temperature targets of ≤ 2 degrees (UN, G8, G21) and ≤ 1.5 degrees (wiser people) and the internationally accepted maximum GHG concentration
level of 450 ppm — and
for the CO2
stabilisation concentration
level of 350 ppm (Hansen and many other climate scientists): if we know «2» is the right answer, we're not that clever when we fail to comprehend 1 +1 is the logical route to getting there.]
For example,
stabilisation at 550 ppm (resulting in a temperature increase relative to pre-industrial
levels of nearly 2 °C) only reduces the number of people adversely affected by climate change by 30 - 50 % (Arnell, 2006).
The topics addressed include critical thresholds and key vulnerabilities of the climate system, impacts on human and natural systems, socioeconomic costs and benefits of emissions pathways, and technological options
for meeting different
stabilisation levels of greenhouse gases in the atmosphere.
The potential
for further reductions in warming, both up to 2100 and beyond, through non-CO2 gases, depends on whether, in more comprehensive scenarios (when such become available), their
stabilisation levels are less than the
levels assumed here.
For stabilisation in 2100 with SRES A1B atmospheric composition, Greenland would initially contribute 0.3 to 2.1 mm yr — 1 to sea
level (Table 10.7).