And of course more warming is yet to come from
continuing human greenhouse gas emissions.
Not exact matches
Politics of deferred gratification Under one of the additional scenarios, known as RCP 4.5,
humans take longer to reduce
greenhouse gas emissions but eventually do so, and under the other, known as RCP 8.5, carbon dioxide concentrations
continue to rise through 2100.
The ability of the oceans to take up carbon dioxide can not keep up with the rising levels of
greenhouse gases in the atmosphere, which means carbon dioxide and global temperatures will
continue to increase unless
humans cut their carbon dioxide
emissions.
In a paper published this month in Geophysical Research Letters, Lovejoy concludes that a natural cooling fluctuation during this period largely masked the warming effects of a
continued increase in
human - made
emissions of carbon dioxide and other
greenhouse gases.
A few of the main points of the third assessment report issued in 2001 include: An increasing body of observations gives a collective picture of a warming world and other changes in the climate system;
emissions of
greenhouse gases and aerosols due to
human activities
continue to alter the atmosphere in ways that are expected to affect the climate; confidence in the ability of models to project future climate has increased; and there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to
human activities.
Since levels of
greenhouse gases have
continued to rise throughout the period, some skeptics have argued that the recent pattern undercuts the theory that global warming in the industrial era has been caused largely by
human - made
emissions from the burning of fossil fuels.
With the
human population
continuing to rise by 75 million or more per year and with torrid economic growth in much of the developing world, the burdens of deforestation, pollution,
greenhouse gas emissions, species extinction, ocean acidification and other massive threats intensify.
Yet despite all the complexities, a firm and ever - growing body of evidence points to a clear picture: the world is warming, this warming is due to
human activity increasing levels of
greenhouse gases in the atmosphere, and if
emissions continue unabated the warming will too, with increasingly serious consequences.
In the time since the 2007 version of this report, the
human effect on the climate has grown more than 40 percent stronger, thanks to
continued emissions of
greenhouse gases and more precision in measurements, with carbon dioxide leading the charge.
«In the face of natural variability and complexity, the consequences of change in any single factor, for example
greenhouse gas emissions, can not readily be isolated, and prediction becomes difficult... Scientific uncertainties
continue to limit our ability to make objective, quantitative determinations regarding the
human role in recent climate change, or the degree and consequence of future change.»
Human behavioral changes, such as installing solar panels or investing in public transportation, alter
greenhouse gas emissions, which change the global temperature and thus the frequency of extreme events, leading to new behaviors, and the cycle
continues.
Terrell Johnson, reporting on a recent NASA publication concluding that deep ocean temperatures have not increased since 2005 (http://www.weather.com/science/environment/news/deep-ocean-hasnt-warmed-nasa-20141007): «While the report's authors say the findings do not question the overall science of climate change, it is the latest in a series of findings that show global warming to have slowed considerably during the 21st century, despite
continued rapid growth in
human - produced
greenhouse gas emissions during the same time.»
Thus a grand solar minimum would have to cause about 1 °C cooling, plus it would have to offset the
continued human - caused global warming between 1 and 5 °C by 2100, depending on how our
greenhouse gas emissions change over the next century.
Continued greenhouse gas emissions are likely to be associated with changes in rainfall patterns, desertification, more frequent storms and rises in sea level, all of which have implications for
human movement.
And though, eventually, this drought will end, unless something is done about worldwide
human greenhouse gas emissions, these kinds of extreme events will
continue to recur and worsen.
Climate change is set to
continue due to historically high
greenhouse gas emissions by
humans, according to the latest report by the Intergovernmental Panel on Climate Change.
The enhanced
Greenhouse Effect we are now measuring is a human fingerprint because the source of it is the continued emission of greenhouse gases, primarily carbon dioxide, produced by industrial
Greenhouse Effect we are now measuring is a
human fingerprint because the source of it is the
continued emission of
greenhouse gases, primarily carbon dioxide, produced by industrial
greenhouse gases, primarily carbon dioxide, produced by industrial activity.
Yet despite all the complexities, a firm and ever - growing body of evidence points to a clear picture: the world is warming, this warming is due to
human activity increasing levels of
greenhouse gases in the atmosphere, and if
emissions continue unabated the warming will too, with increasingly serious consequences.
«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.
Instead of including projections for extreme climate changes as a result of
continued human emissions of
greenhouse gases resulting from our production of energy, the high - end projections would have featured relatively modest changes and the low - end projections would have been completely unremarkable.
There are climate doomsday proponents and alleged «experts» who fear that Earth is warming so fast that it will soon reach hothouse Venus - like temperatures, primarily due to
humans continuing global
emissions of CO2, a trace
greenhouse gas.
Researchers for the first time have calculated the highest tolerable «wet - bulb» temperature and found that this temperature could be exceeded for the first time in
human history in future climate scenarios if
greenhouse gas emissions continue unabated.
If present trends in the
emission of
greenhouse gases continue for 100 years, the group concludes, then resultant
human - induced global warming will raise the Earth's average surface temperature between 1.4 and 5.8 degrees Celsius (2.5 and 10.4 degrees Fahrenheit).
These short - term cycles don't have long - term effects on the Earth's temperature, unlike the
continuing upward trend caused by global warming from
human greenhouse gas emissions.
So, in order to trigger another LIA, a new grand solar minimum would have to cause about 1 °C cooling, plus it would have to offset the
continued human - caused global warming of 1 to 5 °C by 2100, depending on how our
greenhouse gas emissions change over the next century.