Mountainous areas will face glacier retreat, reduced snow cover and winter tourism, and extensive species losses (in some areas up to 60 %
under high emission scenarios by 2080).
Not exact matches
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.
However,
under the
high shift
scenario — based on mode shifting and policies that encourage denser development and the substitution of telecommunications for travel — the United States could drop its
emissions much faster to 280 megatons of CO2
by 2050.
This is slightly
higher than the IPCC's estimate
under the same
emissions scenario of 7 cm
by 2100.
Ocean pH is projected to drop an additional 0.4 pH units
by 2100
under a
high CO2
emission scenario, ref with carbonate saturation levels potentially falling below those required to sustain coral reef accretion.
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.
The draft's authors suggest that
under the worst - case
emissions scenario the modelers considered, global sea levels could rise
by up to 1 meter
by the end of the century, about two centimeters
higher than the top of the range offered in 2007.
«
Under a
high emissions scenario, where we don't make significant changes to our fossil fuel use, applications could increase
by 188 percent — nearly tripling.»
For example, stormwater across the city of Milwaukee recently showed
high human fecal pathogen levels at all 45 outflow locations, indicating widespread sewage contamination.87 One study estimated that increased storm events will lead to an increase of up to 120 % in combined sewer overflows into Lake Michigan
by 2100
under a very
high emissions scenario (A1FI), 57 leading to additional human health issues and beach closures.
By 2100, global atmospheric CO2 levels reach 550 and 970 ppm
under the lower and
higher emissions scenarios, respectively.
Model projections for precipitation changes are less certain than those for temperature.12, 2
Under a
higher emissions scenario (A2), global climate models (GCMs) project average winter and spring precipitation
by late this century (2071 - 2099) to increase 10 % to 20 % relative to 1971 - 2000, while changes in summer and fall are not expected to be larger than natural variations.
Under the IS92a «business as usual»
emissions scenario CO2 concentrations reached about 980 ppmv
by 2100, which is about 280 ppmv
higher than when these feedbacks were ignored.
Under a
high emissions scenario, Blaine County can expect a 40 % decline in the number of days at or below freezing
by late century, falling from a historical annual average of more than 200 days to about 120.
The county can expect an average of 15 weeks per year at or below freezing
by late century
under a
high emissions scenario, compared to about 23 weeks of those temperatures from 1981 to 2010.
The name «Nevada» is Spanish for «snow - capped,» but winter temperatures in the county are projected to average just shy of 50oF
by late century
under a
high emissions scenario, which could leave mountainous areas like Donner Summit covered in brown, not white.
Projections of future summer mean WBGT
under the RCP8.5
emissions scenario that are constrained
by observations indicate that
by 2030s at least 50 % of the summers will have mean WBGT
higher than the observed historical record value in all the analyzed regions, and that this frequency of occurrence will increase to 95 %
by mid-century.
The research, led
by Australian researchers from the CSIRO and Bureau of Meteorology, predicts that Australia's national average temperature will increase
by 2.8 - 5.1 °C
by 2090 in a
high emissions scenario, compared to 0.6 - 1.7 °C
under a low global
emissions scenario.
Compared with the globally efficient policy (with a globally harmonized
emissions price at all times), near - term
emissions prices in developed countries rise from between a few percent and 100 percent
under the different
scenarios, and discounted global abatement costs are
higher by about 10 to 70 percent.
This is slightly
higher than the IPCC's estimate
under the same
emissions scenario of 7 cm
by 2100.
An examination of how
high temperatures throughout the year are projected to rise
by the end of the century
under two different
emissions scenarios.
Under a
high emission scenario, the projections show that
by 2100, 3 - sigma heat waves will cover 85 per cent of the global land area and five - sigma heat waves will cover around 60 per cent of global land.
The paper concluded that worldwide temperatures could rise nearly 5 °C
by the end of the century, 15 percent
higher than the previous central estimate
under the «business as usual»
emissions scenario outlined
by the U.N. Intergovernmental Panel on Climate Change.
Lower map shows model projections of the change in storage
by 2100 as a result of nitrogen and phosphorus limits,
under a
high emissions scenario (RCP8.5).