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California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

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In 2017, emissions from GHG emitting activities statewide were 424 million metric tons of CO 2 equivalent (MMTCO 2 e), 5 MMTCO 2 e lower than 2016 levels and 7 MMTCO 2 e below the 2020 GHG Limit of 431 MMTCO 2 e. Changes in emissions by Scoping Plan sector between 2000 and 2017. MMTCO 2 e (6%) from 2013 to 2017. Source: ARB.

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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. Source: The ICCT.

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CSIRO study finds ozone uptake in oceans much lower than previously thought

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CSIRO scientists have developed a new way to account for ozone in computer simulations of the climate. This latest modeling shows that the oceans take much less ozone out of the atmosphere than previously thought. Ozone (O 3 ) is formed by reactions of chemicals such as nitrogen oxides and volatile organic compounds—i.e.,

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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.

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Latest GHG Inventory shows California remains below 2020 emissions target; much steeper rate of GHG reductions required

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The California Air Resources Board released GHG emissions data for 2018 showing that emissions remain below 1990 levels but are effectively flat compared to 2017, while the economy grew by 4.3%. million metric tons in 2017. Transportation emissions declined 1.5 Source: California Air Resources Board (ARB). tons per person to 10.7

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EEA report finds most Europeans in cities still exposed to levels of air pollution exceeding WHO guidelines

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The new EEA analysis is based on the latest official air quality data from more than 4,000 monitoring stations across Europe in 2017. Among the findings: Concentrations of particulate matter (PM) continued to exceed the EU limit values and the WHO AQGs in large parts of Europe in 2017. For PM with a diameter of 10 ?m

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EPA launches Cleaner Trucks Initiative to update NOx standards for heavy-duty trucks

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Through rulemaking and a comprehensive review of existing requirements, we will capitalize on these gains and incentivize new technologies to ensure our heavy-duty trucks are clean and remain a competitive method of transportation. From 2007 to 2017, US NO x emissions dropped by more than 40%.

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