Pointing to an oft - repeated formula, Mr. Djoghlaf said that each increase of one degree Celsius (1.8 Fahrenheit) in
average global surface temperature resulted in the loss of about 10 percent of all known animal and plant species.
Not exact matches
Most scientists and climatologists agree that weird weather is at least in part the
result of
global warming — a steady increase in the
average temperature of the
surface of the Earth thought to be caused by increased concentrations of greenhouse gasses produced by human activity.
The
results show that even though there has been a slowdown in the warming of the
global average temperatures on the
surface of Earth, the warming has continued strongly throughout the troposphere except for a very thin layer at around 14 - 15 km above the
surface of Earth where it has warmed slightly less.
According to the
results, the area covered by carbon - rich frozen ground in the Arctic is expected to shrink by 4m square km for every extra degree that
global average surface temperature rises.
Finally, to revisit the question originally posed @ 203: Assuming the IEO2011 Reference case of «1 trillion metric tons of additional cumulative energy - related carbon dioxide emissions between 2009 and 2035», and given that this case equates to following RCP8.5 until 2035 as previously demonstrated @ 408, what increase in
average global surface temperature relative to pre-industrial would
result by 2035?
Assuming the IEO2011 Reference case of «1 trillion metric tons of additional cumulative energy - related carbon dioxide emissions between 2009 and 2035», and given that this case equates to following RCP8.5 until 2035 as previously demonstrated @ 408, what increase in
average global surface temperature relative to pre-industrial would
result by 2035?
As critics of «
global warming» science have pointed out for years, there are serious issues with the
surface temperature datasets that
result in corrupted
global average temperatures that are currently used by policymakers.
Based on the Cohen et al paper it's likely that leaving out the most volatile data series would in the present case
result in a time series where warming continues with less plateauing than we see in the existing data on
global average surface temperature.
That's right, the latest climate science (some 10 studies published in just the past 3 years) indicates that the earth's climate sensitivity — that is, how much the
global average surface temperature will rise as a
result of greenhouse gases emitted from human activities — is some 33 percent less than scientists thought at the time of the last IPCC Assessment, published in 2007.
Global warming refers to an increase in the
average temperature of the Earth as a
result of the greenhouse effect, in which gases in the upper atmosphere trap solar radiation close to the planet's
surface instead of allowing it to dissipate into space.
«Climate science» as it is used by warmists implies adherence to a set of beliefs: (1) Increasing greenhouse gas concentrations will warm the Earth's
surface and atmosphere; (2) Human production of CO2 is producing significant increases in CO2 concentration; (3) The rate of rise of
temperature in the 20th and 21st centuries is unprecedented compared to the rates of change of
temperature in the previous two millennia and this can only be due to rising greenhouse gas concentrations; (4) The climate of the 19th century was ideal and may be taken as a standard to compare against any current climate; (5)
global climate models, while still not perfect, are good enough to indicate that continued use of fossil fuels at projected rates in the 21st century will cause the CO2 concentration to rise to a high level by 2100 (possibly 700 to 900 ppm); (6) The
global average temperature under this condition will rise more than 3 °C from the late 19th century ideal; (7) The negative impact on humanity of such a rise will be enormous; (8) The only alternative to such a disaster is to immediately and sharply reduce CO2 emissions (reducing emissions in 2050 by 80 % compared to today's rate) and continue further reductions after 2050; (9) Even with such draconian CO2 reductions, the CO2 concentration is likely to reach at least 450 to 500 ppm by 2100
resulting in significant damage to humanity; (10) Such reductions in CO2 emissions are technically feasible and economically affordable while providing adequate energy to a growing world population that is increasingly industrializing.
There are two primary externalities that
result from our emissions of carbon dioxide into the atmosphere — 1) an enhancement of the greenhouse effect, which
results in an alteration of the energy flow in the earth's climate and a general tendency to warm the
global average surface temperature, and 2) an enhancement of the rate of photosynthesis in plants and a general tendency to
result in more efficient growth and an overall healthier condition of vegetation (including crops).
[CAPTION: Fig. 1 Violinplots of monthly
surface temperature results for 9 GISS ER historical model runs (1880 - 2003), their
average (orange), and the HadCRUT3
global surface temperature dataset (red).
Fig. 1 Violinplots of monthly
surface temperature results for 9 GISS ER historical model runs (1880 - 2003), their
average (orange), and the HadCRUT3
global surface temperature dataset (red).
If there is deep - water formation in the final steady state as in the present day, the ocean will eventually warm up fairly uniformly by the amount of the
global average surface temperature change (Stouffer and Manabe, 2003), which would
result in about 0.5 m of thermal expansion per degree celsius of warming, calculated from observed climatology; the EMICs in Figure 10.34 indicate 0.2 to 0.6 m °C — 1 for their final steady state (year 3000) relative to 2000.
Last year was the hottest since records began and with an El Nino now under way the warm
surface waters of the Pacific are releasing heat into the atmosphere with the
result 2015 is likely to break last year's record and the
global average surface temperature could jump by as much as 0.1 degree this year alone bring
global surface temperatures increases to 1 degrees or half way to the UN
global limit.