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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. Compared to 2016, California’s GDP grew 3.6% Overview of GHG Emissions from the Transportation Sector. Source: ARB.

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CARB, NOAA, NASA and San Jose State University scientists team up to study ozone transported across Pacific

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As California continues to reduce local sources of ozone, ozone entering the state from the Pacific makes up a larger fraction of measured ozone levels. An ozonesonde is a balloon which measures ozone from the surface to more than 10 kilometers above the ground.

San Jose 150
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Study finds pollution emitted near equator has biggest impact on global ozone

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They found that the increase in ozone burden due to the spatial distribution change slightly exceeds the combined influences of the increased emission magnitude and global methane. Based on their findings, they suggested that emission increases in Southeast, East and South Asia may be most important for the ozone change.

Ozone 230
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Study quantifies impact of oil and gas emissions on Denver’s ozone problem

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The first peer-reviewed study to directly quantify how emissions from oil and natural gas (O&NG) activities influence summertime tropospheric ozone (O 3 ) pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem. McDuffie et al.

Ozone 150
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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 data shows a slight increase in overall emissions from the previous year, and a slight decline in emissions from transportation, which is the state’s main source of both GHGs and air pollutants. California statewide GHG emissions dropped below the 2020 GHG Limit in 2016 and have remained below the 2020 GHG Limit since then.

2020 221
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HEI: 95%+ of world’s population live in areas of unhealthy air

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Seven billion people, more than 95% of the world’s population, lived in areas exceeding the WHO Guideline for healthy air in 2016, according to a new global study. Comparison of 2016 annual average PM 2.5 Population-weighted seasonal average ozone concentrations in 2016. In 2016 a total of 2.5 contributed to 4.1

Pollution 218
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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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20 % of stations registered concentrations above the EU ozone (O 3 ) target value for the protection of human health. Poor air quality continues to damage Europeans’ health, especially in urban areas, with particulate matter (PM), nitrogen dioxide (NO 2 ) and ground-level ozone (0 3 ) causing the largest harm.

Pollution 170