Record rise in Carbon dioxide level caused by 2015-16 El Nino

Record rise in Carbon dioxide level caused by 2015-16 El Nino

Record rise in Carbon dioxide level caused by 2015-16 El Nino

In recent year, a surge in the level of carbon dioxide has been witness the average annual increase has been closer to two parts per million of carbon dioxide per year - or four gigatonnes of carbon. And some computer simulations say the frequency of El Nino will increase in the future with climate change, Denning said during a NASA press conference.

OCO-2 data showed that 2015's El Niño weather, created by warmer waters in the central and eastern Pacific Ocean, led to hotter conditions in tropical regions of South America, Africa and Indonesia. A set of five papers in Science analyzes OCO-2 data collected from 2014 to 2016, identifying seasonal effects on the carbon cycle as well as the influence of the 2015-16 El Niño weather event. These changes have disturbed the Globe Carbon Cycle.

In tropical Asia, the increased carbon release was mostly due to biomass burning. In Africa, rainfall is nearly not decreased, but the temperature rise is still accelerated the process of decomposition of dead trees and plants, which increased emissions of carbon dioxide.

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Normally about 25 percent of the human-caused carbon emissions are sucked up by plants on land, but during this powerful El Nino that was only 5 percent, said Junjie Liu, a NASA scientist and study lead author.

Jonathan Overpeck, a University of MI scientist who was not part of the study, said the research revealed that the regional links between carbon dioxide and El Nino are more complex than previously thought, and raised concern about how the earth will respond to more future warming.

The agency's satellite, called the Orbiting Carbon Observatory-2 or OCO-2, was launched in July 2014, with the mission of collecting carbon dioxide measurements from around the world.

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Since climate change is expected to bring less rain to South America and higher temperatures to Africa by the end of the century, researchers warn the trend will get worse in the tropics, which have traditionally served as a buffer for fossil fuel emissions because they absorb so much carbon.

The deputy project scientist of OCO-2 Annmarie Eldering believes that half of the carbon dioxide goes into the atmosphere, and half of it stays in oceans or is used by plants during photosynthesis.

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