Dozens of climate scientists are trying to block the DVD release of a controversial Channel 4 programme that claimed global warming is nothing to do
with human greenhouse gas emissions.
By comparing values of these parameters from the mid-19 century to now, they can estimate how much the earth warmed in association
with human greenhouse gas emissions.
Not exact matches
Exxon has argued against all the other shareholder proposals as well, including a «policy to explicitly prohibit discrimination based on sexual orientation and gender identity»; a policy articulating Exxon's «respect for and commitment to the
human right to water»; «a report discussing possible long term risks to the company's finances and operations posed by the environmental, social and economic challenges associated
with the oil sands»; a report of «known and potential environmental impacts» and «policy options» to address the impacts of the company's «fracturing operations»; a report of recommendations on how Exxon can become an «environmentally sustainable energy company»; and adoption of «quantitative goals... for reducing total
greenhouse gas emissions.»
But that may be about to change, thanks to a new type of climate study that can connect individual weather events
with the impact of
human - made
greenhouse gas emissions.
In its 2007 report, the IPCC concluded
with 90 percent certainty that
human - caused
greenhouse gas emissions have been the primary factor in Earth's overall temperature rise since 1950.
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.
That has squeezed out the Quino checkerspot butterfly's habitat, and
with the climate changes coming as a result of
human greenhouse gas emissions, its listing as an endangered species by the U.S. government may not be enough to save the pretty little butterfly from extinction.
This time, no return to cooler period Tim Barnett, a climatologist at Scripps Institution of Oceanography, said the new results appear to agree
with his earlier work that used climate models to show
humans»
greenhouse gas emissions have contributed to declining snowpack in the western United States.
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 intens
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 intens
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.
Known as a «co-benefit,» using state of the art models for
human and natural systems, along
with climate projections from the international community, the team was able for the first time to put a value on the global air pollution benefits of cutting
greenhouse gas emissions over the 21st century.
«Climate models can easily make assumptions about reductions in future
greenhouse gas emissions and project the implications, but they do this
with no rational basis for
human responses,» Gross said.
Mr. McCain has been an interesting voice on global warming, given that he broke
with President Bush and most of his party years ago, acknowledging that the buildup of
greenhouse gases from
human activities was risky and mandatory steps were needed to curb
emissions.
While the report included strong statements pointing to a growing
human influence on climate, Mr. Bush's critics asserted that the emphasis on unknowns gave the administration cover to avoid quickly pushing forward
with actions to limit
greenhouse -
gas emissions.
Karelin et al (2017) «
Human footprints on greenhouse gas fluxes in cryogenic ecosystems» This paper presents no evidence on the subject being concerned with direct human impacts on CH4 emissions (which it says will result in a decrease in CH4 emissi
Human footprints on
greenhouse gas fluxes in cryogenic ecosystems» This paper presents no evidence on the subject being concerned
with direct
human impacts on CH4 emissions (which it says will result in a decrease in CH4 emissi
human impacts on CH4
emissions (which it says will result in a decrease in CH4
emissions).
By the way, I'd just like to mention that I am far happier to be arguing about the comparative benefits of nuclear power, wind, solar, geothermal, biomass, conservation, efficiency, reforestation, organic agriculture, etc. for quickly reducing CO2
emissions and concentrations, than to be engaged in yet another argument
with someone who doesn't believe that CO2 is a
greenhouse gas, or that
human activities are not causing warming, or that the Earth is cooling, or thinks that AGW is a «liberal» conspiracy to destroy capitalism, etc..
I have yet to see anyone provide definitive evidence —
with no error bars — that the fingerprint of
human - generated
greenhouse gases (or other
emissions or actions) is unequivocal.
Updated, 11:28 a.m.
With climate treaty negotiations expected to intensify next year, China is signaling that it may soon set the timetable for hitting an eventual peak in its
emissions of carbon dioxide, the most important
human - generated
greenhouse gas.
As for the ethics of all of this, Donald A. Brown of Pennsylvania State University argues that the world's top emitters of
greenhouse gases are morally obligated to curb carbon dioxide and similar
emissions based on the level of certainty that is already established on the impacts of those
emissions — most of which will be in poorer places
with small contributions to the
human - caused
gas buildup in the atmosphere.
While I am still comfortable
with my argument that «
human inertia» is the prime explanation for a long response time for doing anything about
greenhouse gas emissions, I am very wary of efforts by California and the U.K. to stick their necks out on carbon reductions.
In theory, the goal of the Paris talks over a new global climate agreement is to create a more sustainable
human relationship
with the climate system by curbing
emissions of
greenhouse gases and boosting poor countries» capacity to withstand climate shocks.
Given that
humans are spending ever more time indoors,
with all the heating, cooling and lighting potentially attending such a lifestyle, finding big cuts in energy use in structures can make a big dent in
greenhouse -
gas emissions and energy appetites.
Human water vapour
emissions are irrelevant, as water vapour is in dynamic equilibrium
with ocean water, an equilibrium controlled by global mean temperature, i.e., other
greenhouse gases etc..
Human - made
greenhouse gas emissions today are enormous, especially carbon dioxide (CO2),
with annual
emissions of over 8 Gigatons of carbon and average annual increases of about 2 ppm (parts per million) of CO2 in the air.
Come the cold season, whenever there is some type of strong storm system near the U.S. Eastern Seaboard — be it a Nor» easter, a blizzard, or ex-hurricane Sandy — you don't have to look very hard to find someone who will tell you that this weather is «consistent
with» expectations of climate change resulting from
human greenhouse gas emissions.
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.
On the other hand, despite the overwhelming evidence that global warming will transform the Earth's climate for centuries,
with fearful consequences for
human health and wellbeing (not to mention the survival of many species and ecosystems), the world can not agree to significant reductions in
greenhouse gas emissions because of concerns about the effects on economic growth.
Most worrisome, if humanity stays near its current path of
greenhouse gas emissions, the IPCC warns
with «high confidence» that «the combination of high temperature and humidity in some areas for parts of the year is projected to compromise normal
human activities, including growing food or working outdoors.»
The lower boundary of this range is
with rapid reductions in
human greenhouse gas emissions, the upper boundary is under business as usual.
But the IPCC concerns itself
with consideration of anthropogenic (i.e. man - made) global warming (AGW) as a result of
emissions of
greenhouse gases (notably carbon dioxide, CO2) from
human activities.
The Geological Society of America «The Geological Society of America (GSA) concurs
with assessments by the National Academies of Science (2005), the National Research Council (2006), and the Intergovernmental Panel on Climate Change (IPCC, 2007) that global climate has warmed and that
human activities (mainly
greenhouse gas emissions) account for most of the warming since the middle 1900s.»
Later studies suggested that along
with overgrazing,
human emissions, not only of
greenhouse gases but also of industrial haze, had caused changes in weather patterns that contributed to the disaster.)
Ruminants, which ferment plants in a specialized stomach before digestion, are estimated to be the largest single
human - related source of methane,
with greenhouse -
gas emissions from sheep and cattle 19 to 48 times higher than beans or grains per pound of food produced, according to the report.
Climate models are not designed to capture record daily highs and lows
with precision, and it remains impossible to know future
human actions that will determine the level of future
greenhouse gas emissions.
FOR IMMEDIATE RELEASE An extensive new study by climate impact researchers warns that
humans will struggle to cope
with drastic and rapid changes to the planet unless
greenhouse gas emissions rates are cut now London, 8 October − Allowing the Earth's temperature to rise by more than 2ºC will see dramatic changes in vegetation across the planet and expose a billion more people to severe water scarcity, according to new research.
One of the problems
with the EPA's Endangerment TSD is the nearly complete disregard of observed trends in a wide array of measures which by and large show that despite decades of increasing anthropogenic
greenhouse gas emissions the U.S. population does not seem to have been adversely affected by any vulnerabilities, risks, and impacts that may have arisen (to the extent that any at all have actually occurred as the result of any
human - induced climate changes).
There, as
with much of Siberia, temperatures have been forced to rapidly warm by
human greenhouse gas emissions.
According to Dr Brekke, this time period coincides not only
with an increase in
human - caused
greenhouse gas emissions, but also
with a higher level of solar activity, which makes it complicated to separate the effects of these two phenomena.
Emissions -
Emissions of heat - trapping
gases (
greenhouse gases),
greenhouse -
gas precursors, and aerosols associated
with human activities.
In another analysis, Pei Zhai, Dev Millstein and other Berkeley Lab researchers looked at the impacts to
human health, land use, weather, climate and
greenhouse gas emissions associated
with large - scale photovoltaic (PV) installations in 10 states.
Global warming emerged as a very strong hypothesis in the then - obscure scientific discipline of climate science in the 1980's
with mounting empirical data supporting the
human role in increases in
greenhouse gas emissions, particularly carbon dioxide.
The Geological Society of America (GSA) concurs
with assessments by the National Academies of Science (2005), the National Research Council (2006), and the Intergovernmental Panel on Climate Change (IPCC, 2007) that global climate has warmed and that
human activities (mainly
greenhouse ‐
gas emissions) account for most of the warming since the middle 1900s.
4,000 people took part in the «
human flood» event in Helsinki to demand that Finland adopts a legally binding climate law
with annual cuts in
greenhouse gas emissions.
All of these studies find that
humans are responsible for close to 100 % of the observed global warming over the past 50 years, and
human greenhouse gas emissions are responsible for close to 150 % of the observed warming,
with human aerosol (sulfur dioxide - SO2)
emissions offsetting approximately one - third to one - half of that
greenhouse warming.
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.
Countries included in Annex B of the Protocol (most Organization for Economic Cooperation and Development countries and countries
with economies in transition) agreed to reduce their
human - induced heat - trapping
gas (
greenhouse gas)
emissions (carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride) by at least 5 % below 1990 levels in the commitment period 2008 to 2012.
Lead scientist on the project Jessica Tierney told Reuters the sharp rise in temperature coincided
with rises in
human emissions of
greenhouse gases seen in the past century, so the study added to evidence that
emissions are warming the planet.
«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.
The results of this study are consistent
with the wide body of evidence supporting the settled science that
human greenhouse gas emissions are the dominant cause of the current global warming.