These comparisons can be misleading over the next few decades because the upper boundary of the range covered by subgroup average emissions is significantly lower than the upper boundary of the range
of illustrative scenarios.
Not exact matches
PwC said its research was an «
illustrative scenario,» and «not a prediction
of what will actually happen to EU migration after Brexit.»
This
scenario has the LOWEST emissions in 2100
of the six IPCC
illustrative scenarios, whereas the ABARE AP6
scenario projected HIGHER emissions in 2100 than any
of the IPCC
scenarios.
The figure shows
illustrative scenarios from four models (AIM, IMAGE, IPAC and MESSAGE) for stabilization levels
of 490 - 540 ppmv CO2 - eq and levels
of 650 ppmv CO2 - eq, respectively.
IPCC TAR WG3 Chapter 2 says a selected
scenario merely needs to «be
illustrative»
of a «storyline» according to the «preferance
of some modelling teams» on the basis
of their «extensive discussion».
The Chapter says, «the markers are not necessarily the median or mean
of the
scenario family, but are those
scenarios considered by the SRES writing team as
illustrative of a particular storyline».
Hence, this report has an
illustrative scenario for each
of the six
scenario groups.
Marker
scenarios are no more or less likely than any other
scenarios, but are considered by the SRES writing team as
illustrative of a particular storyline.
For each
of the six
scenario groups an
illustrative scenario (which is always harmonized) is provided.
Illustrative: a scenario that is illustrative for each of the six scenario groups reflected in the Summary for Policymakers of this report (after combining A1G and A1C into a single
Illustrative: a
scenario that is
illustrative for each of the six scenario groups reflected in the Summary for Policymakers of this report (after combining A1G and A1C into a single
illustrative for each
of the six
scenario groups reflected in the Summary for Policymakers
of this report (after combining A1G and A1C into a single A1FI group).
These six groups all have «
illustrative scenarios,» four
of which are marker
scenarios.
Note: During the approval process
of the Summary for Policymakers at the 5th Session
of WGIII
of the IPCC from 8 - 11 March 2000 in Katmandu, Nepal, it was decided to combine the A1C and A1G groups into one «fossil intensive» group A1FI in contrast to the non-fossil group A1T, and to select two
illustrative scenarios from these two A1 groups to facilitate use by modelers and policy makers.
Best estimates (red dots) and likely range (red bars)
of warming by 2090 - 2099 relative to 1980 - 1999 for all six
illustrative SRES
scenarios and best estimates (coloured dots) for SRES B1, A1B and A2 by 2020 - 2029, 2050 - 2059 and 2080 - 2089 (IPCC, 2007, Figure SPM.5).
Projections
of global mean warming during the 21st century for the six SRES
illustrative scenarios are presented by WG I (Meehl et al., 2007) and summarised in Figure 2.8.
Projected ranges
of global mean annual temperature change during the 21st century for CO2 - stabilisation
scenarios (upper panel, based on the TAR) and for the six
illustrative SRES
scenarios (middle and lower panels, based on the WG I Fourth Assessment).
The figure shows
illustrative scenarios from four models (AIM, IMAGE, IPAC and MESSAGE) aiming at the stabilization at 490 - 540 ppm CO2 - eq and levels
of 650 ppm CO2 - eq, respectively.
It is not appropriate to compare the lowest and highest values across these ranges against the single range given in the TAR, because the TAR range resulted only from projections using an SCM and covered all SRES
scenarios, whereas here a number
of different and independent modelling approaches are combined to estimate ranges for the six
illustrative scenarios separately.
My question is more
of a general one regarding how «authorisation» is determined, and my
scenarios are for
illustrative purposes rather than specific ones.
In addition to utilizing popular narratives in
illustrative hypotheticals as an educationally sound technique for introducing legal concepts, «what if»
scenarios from popular texts can be framed as a way
of testing the limits
of a doctrine once it has been effectively mapped out for students.
Extensive sample questions,
illustrative scenarios, and hypothetical case studies will provoke lively classroom discussion and thoughtful analysis
of the ethical principles being considered.
The following
scenario is
illustrative of both the nature and necessity
of umbrella insurance coverage.