Sentences with phrase «of human carbon dioxide»

While the SE4All objectives do not explicitly address climate change, it is clear that sustainable energy is a prerequisite for reducing greenhouse gas emissions: 80 % of human carbon dioxide emissions come from the global energy system, including transportation, buildings, industry, and electricity, heat, and fuel production.

This position does not appear to be supported by any observational evidence, much like the highly exaggerated claims concerning the effects of human carbon dioxide emissions on climate.

Undoubtedly, sea levels will continue to rise into the future, in part, from the earth's temperature increase as a result of human carbon dioxide emissions resulting from our use of fossil fuels.

This means the IPCC is tasked with finding a human effect of human carbon dioxide emissions on the climate, whereas NIPCC looks at climate change «in the round,» without bias.

Scientists have released the first - ever global maps of human carbon dioxide emissions taken from satellite observations.

Given the high uncertainty about the net effect of human carbon dioxide emissions on global temperatures, we only see natural changes in climate.

«The human impact on global climate is small, and any warming that may occur as a result of human carbon dioxide (CO2) and other greenhouse gas emissions is likely to have little effect on global temperatures, the cryosphere (ice - covered areas), hydrosphere (oceans, lakes, and rivers), or weather.

Data from satellite observations «suggest that greenhouse models ignore negative feedback produced by clouds and by water vapor, that diminish the warming effects» of human carbon dioxide emissions.

«Ocean warming is occurring because of human carbon dioxide emissions, which warm the earth as a whole,» Weber says.

Forests and other land vegetation currently remove up to 30 percent of human carbon dioxide emissions from the atmosphere during photosynthesis, but thanks to this latest study, experts now know that we have tropical forests to thank for a great deal of this work - absorbing a whopping 1.4 billion metric tons of CO2 out of a total total global absorption of 2.5 billion metric tons.

Not exact matches

A joint statement from the National Academy of Sciences and Royal Society in Britain said «human - induced increases in CO2 (carbon dioxide) concentrations have been the dominant influence on the long - term global surface temperature increase.»

Trump and several of his cabinet members deny the consensus among climate scientists that carbon dioxide from human activity is the primary cause of global warming.

Perry has questioned the scientific consensus that carbon dioxide emissions from human activity are the primary driver of climate change.

Hey, the big kahuna upstairs gave humans the free will to pollute their environment and to dump excessive amounts of carbon dioxide into the atmosphere.

The properties of the chemical substances, a plant's movement towards the sun and its ability to produce oxygen from carbon dioxide are very useful to humans in general and can be very useful to designers.

... A number of scientific studies indicate that most global warming in recent decades is due to the great concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxides and others) released mainly as a result of human activity... Doomsday predictions can no longer be met with irony or disdain.

Rick Perry, the U.S. Secretary of Energy who infamously once said he would do away with the Department of Energy, told CNBC that he didn't believe that carbon dioxide emissions from humans are the main cause for climate change.

In animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDS.

The only real climate change solutions that I have seen are to reduce carbon dioxide in the air by having human activity emit less of it.

New research is making it increasingly clear that, without a shift in approach, humans might strip away healthy peatlands and get, in return, a lot of climate - warming carbon dioxide.

The aviation industry produces 2 percent of global human - induced carbon dioxide emissions.

One - third of carbon dioxide emitted by humans enters the oceans, making seawater more acidic, the study noted.

Drivers of Climate Change Atmospheric concentrations of many gases — primarily carbon dioxide, methane, nitrous oxide and halocarbons (gases once used widely as refrigerants and spray propellants)-- have increased because of human activities.

Rising anthropogenic, or human - caused, carbon dioxide in the atmosphere may have up to twice the impact on coastal estuaries as it does in the oceans because the human - caused CO2 lowers the ecosystem's ability to absorb natural fluctuations of the greenhouse gas, a new study suggests.

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.

Mosquitoes prowling for a blood meal are drawn to the plumes of carbon dioxide exhaled with each human breath.

«Many scientists, including us, had focused mostly on the mosquito antennae» for sensing human odors outside of exhaled carbon dioxide, says senior study author Anandasankar Ray, an entomologist at the University of California, Riverside.

But researchers have thought there might be one reason to cheer this surfeit of nitrogen: The nutrient should fertilize tree growth, spurring forests to soak up human - made carbon dioxide (CO2) that would otherwise fuel global warming.

About 6000 years ago, levels of atmospheric carbon dioxide rose — and until now slash - and - burn by the 12 million humans on the planet at the time has been blamed.

A closer examination of mosquitoes» neurons and behavior has now revealed that mosquitoes suss out eau de human in the same way they sense carbon dioxide.

Oceans are taking in about 90 percent of the excess heat created by human greenhouse gas emissions, but they're also absorbing some of the carbon dioxide (CO2) itself.

As humans emit more carbon dioxide into the atmosphere, more of the gas is absorbed by the oceans, gradually making the water more acidic.

When you take out the component of human - generated carbon dioxide, the models don't work at all.

Most carbon emissions linked to human activity are in the form of carbon dioxide gas (CO2), but other forms of carbon include the methane gas (CH4) and the particles generated by such fires — the tiny bits of soot, called black carbon, and motes of associated substances known as brown carbon.

The overwhelming scientific consensus is that the earth's climate is changing and that human activity — including emissions of carbon dioxide and other greenhouse gases — is contributing to that change.

The request also calls for cuts in international climate programs such as SilvaCarbon, a forest assistance program supported by the U.S. Geological Survey and the U.S. Forest Service, and they are all links in a chain that is working toward providing effective measures of human - caused carbon dioxide emissions.

The seas» absorption of human - generated carbon dioxide from the atmosphere is well documented, along with the harm it is causing ocean creatures like shellfish.

Roy Spencer, a climate scientist at the University of Alabama who argued from the skeptical side, agrees that human contributed carbon dioxide lessens the planet's ability to shed heat, meaning that warming is likely.

In addition, the ocean has absorbed 30 percent of the carbon dioxide associated with human activities, lessening the climate effects of fossil fuel combustion.

We humans emitted 35.9 metric gigatons of carbon dioxide into the atmosphere in 2014, mostly from burning coal and natural gas in power plants, making fertilizer and cement, and other industrial processes.

While scientists and policy experts debate the impacts of global warming, Earth's soil is releasing roughly nine times more carbon dioxide to the atmosphere than all human activities combined.

These C3 grasses and legumes have been shown to lose up to 15 percent of zinc and iron, the top two minerals in the human body, in experiments that artificially enhanced the concentration of carbon dioxide.

The quantity of human - generated carbon dioxide, in billions of tons, that the oceans have absorbed.

But the Southern Ocean plays a more benign role in the global carbon budget: Its waters now take up about 50 % of the atmospheric carbon dioxide emitted by human activities, thanks in large part to the so - called «biological pump.»

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.

A study provides the first evidence that pollen production is significantly stimulated by elevated carbon dioxide in a grass species as a result of climate change, which may have significant impact on human health.

«If the natural concentration had been a factor of two or more lower, the climate impacts of fossil fuel carbon dioxide release would have occurred about 50 or more years sooner, making it much more challenging for the developing human society to scientifically understand the phenomenon of humanmade climate change in time to prevent it,» he says.

«Today, we are facing rising carbon dioxide contents in the atmosphere through human activities, and the amount of oxygen in the ocean may drop correspondingly in the face of rising seawater temperatures,» Lyons said.

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.

The amount of carbon dioxide (CO2) in the air is now at its highest level in human history, largely because of coal - burning power plants and vehicle emissions.