A recent report by the Intergovernmental Panel on Climate Change (IPCC) estimates that global CO2 emissions from human activities have already contributed to more than 40% of the world’s current global warming.
The report estimates that by the year 2050, CO2 concentrations in the atmosphere will be at about 350 parts per million (ppm), a level that is “higher than in the past 400 years”.
It predicts that by 2050, the Earth’s oceans will be absorbing about half of the planet’s total CO2.
The UN’s Intergovernmental Scientific Committee on Climate Modelling says that this will cause significant consequences, such as higher sea levels, more intense storms, more extreme rainfall and more frequent and intense droughts.
“The most important change to our world, therefore, will be a change in our atmosphere,” the report says.
It says that a doubling of global CO₂ emissions could result in a reduction in the amount of CO♂ emitted by the atmosphere by up to 2.6 billion tonnes by the end of the century, or about 1.5% of global emissions.
But the impact of this change will not be felt immediately.
The IPCC predicts that the effects will take several decades to be felt by the human species.
The main impact will be on plants and animals that depend on CO for their survival, such a insects and small mammals.
“By the time the COℂ is released into the atmosphere, it will have been deposited in the soil and will have the potential to persist for decades to come,” the IPCC says.
A warmer atmosphere means the CO2 will be stored in the oceans, which are at their warmest and the lowest pressure.
The oceans will then be exposed to more and more CO⇔H, which will cause them to expand and sink.
“These changes will ultimately affect the planet,” the study says.
The rise in temperatures will also affect the plants that use CO⁂ for photosynthesis.
The study’s authors say that these plants “may need to adjust their seasonal and/or seasonal-dependent patterns of plant growth”.
The impact of climate change will affect human activity in a number of ways, the authors say.
The biggest impact is on human health.
The effect of increased CO∂ on human wellbeing will be particularly pronounced in the areas of agriculture and forestry.
“For agriculture, CO levels can increase to more then 3,500 ppm, which is above the maximum concentration seen in the tropics,” the researchers say.
“A significant portion of agricultural production will be dependent on increasing COↂ concentrations, and therefore, agriculture will experience a net negative impact.”
Other impacts include more intense heat waves and droughting, higher sea level rise, higher temperatures, more frequent droughtings, and a longer-lasting and more severe drought.
The effects on animals will also be felt.
The scientists predict that animals will become more dependent on plants.
The increase in CO⋅₃, which in turn will affect the amount and distribution of nutrients in their diet, will have a direct impact on the animal population.
“In terms of climate, CO[CO2] will affect many other ecosystems as well,” the scientists write.
“Specifically, it is predicted that more frequent, more severe droughs and more intense flooding events will result in increased levels of CO2 in the environment.”
But the authors warn that the overall impact of global warming will be difficult to predict.
“We do not yet have a complete picture of the effects of climate warming on the ecosystem in general, and the effect of the warming on plants in particular,” they say.
For the most part, the study concludes, “climate change has been associated with negative impacts on ecosystem functioning.”
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