DANGEROUS LEVEL OF TEMPERATURE

DANGEROUS LEVEL OF TEMPERATURE

Defining what is dangerous interferences with the climate system is a complex task. Over the past two decades several expert groups have sought to define levels of climate change that could be tolerable or intolerable or characterized different levels of risk,. Based on the available knowledge at present, a 2c increases determined to be “an upper limit” beyond which the risks of grave damages to ecosystems are expected to increase rapidly.

More recently others in the scientific community have reached conclusions in a similar direction “that global warming of more than 1c, relative to 2000, will constitute ‘dangerous’ climate change as judged from likely effects on sea level and extermination of species.

There are risks of rapid or abrupt changes in climate and the climate system as a consequence of human

interference. There include: changes in climate variability (EI Niño southern Oscillation, monsoons); a high like selfhood that warming will lead to an increase in  the risk of many extreme events, including floods, droughts, heat waves and fires, with increasing levels adverse impacts a risk that at 1-2 c sustained global warming would lead to a commitment to a large sea-level rise due to at least partial declaration of both ice sheets least partial delectation of both ice sheets (Antarctica and arctic ), and uncertain risk of shutdown of the north Atlantic decisional over-Turing circulation, a large increase in the intensity of tropical cyclones with increasing levels of adverse impacts as temperature increase; and the risk that positive feedbacks from warming may6 1 environmental.

Cause the release of carbon or methane from the terrestrial biosphere and soils.