According to an article recently published in Nature magazine, the last very large El Nino created a surge in carbon dioxide in the global atmosphere which added to amounts already being added by manmade pollution.  According to the article, “Measurements taken by NASA’s Orbiting Carbon Observatory-2 (OCO-2) satellite, which measures the level of carbon dioxide in the atmosphere, suggest that El Niño boosted emissions in three ways. A combination of high temperatures and drought increased the number and severity of wildfires in southeast Asia, while drought stunted plant growth in the Amazon rainforest, reducing the amount of carbon it absorbed. And in Africa, a combination of warming temperatures and near-normal rainfall increased the rate at which forests exhaled CO2.”

Source: Governo do Acre c/o: Gleilson Mira, Commons Wikimedia