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Study links ambient PM2.5 and ozone specifically caused by vehicle exhaust emissions to ~361,000 premature deaths worldwide in 2010 and ~385,000 in 2015

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A new study provides the most detailed picture available to date of the global, regional, and local health impacts attributable to emissions from four transportation subsectors: on-road diesel vehicles; other on-road vehicles; shipping; and non-road mobile engines such as agricultural and construction equipment. of global ambient PM 2.5

Ozone 230
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NASA-led study identifies unprecedented depletion of stratospheric ozone layer above Arctic

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A NASA-led study has documented an unprecedented depletion of Earth’s protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere. The same ozone-loss processes occur each winter in the Arctic.

Ozone 186
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US, China, and G-20 agree to work to global phase down of HFCs

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This was agreed by: Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey,the United Kingdom, the United States, and the European Union, as well as Ethiopia, Spain, Senegal, Brunei, Kazakhstan, and Singapore.

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Low-lying and other vulnerable countries calling for fast action on non-CO2 global warming pollutants

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Led by the tiny Pacific island of the Federated States of Micronesia, a growing group of low-lying islands and other vulnerable countries are calling for fast action on the approximately 50% of global warming that is caused by pollutants other than carbon dioxide (CO 2 ). The next round of UN climate negotiations begins in Cancun today.

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United States and China agree to work together on phasing down HFCs

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A global phase down of HFCs could potentially reduce some 90 gigatons of CO 2 equivalent by 2050, equal to roughly two years worth of current global greenhouse gas emissions. While they do not deplete the ozone layer, many are highly potent greenhouse gases.

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Study finds global rivers and streams emitting 3x IPCC estimates of the GHG N2O

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This new global emission estimate is startling. Nitrous oxide is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. The global warming potential of nitrous oxide is 300-fold greater than carbon dioxide; nitrous oxide accounts for some 6% of human-induced climate change, scientists estimate.

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European Parliament calls for fast action to cut non-CO2 climate forcers

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The European Parliament is calling for fast action to reduce non-CO 2 climate forcers including black carbon soot, hydrofluorocarbons (HFCs), methane, and ground-level ozone, which together are responsible for nearly half of climate forcing. Because these climate forcers are short-lived, reducing them produces a fast climate response.

Climate 225