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Study finds methane emissions from coal mines ~50% higher than previously thought

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Kholod is a scientist at the Joint Global Change Research Institute, a partnership between PNNL and the University of Maryland where researchers explore the interactions between human, energy and environmental systems. In the United States in 2015, about one-third of abandoned mines were flooded. —Nazar Kholod.

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Lung Association report highlights health and climate costs of petroleum-based transportation and the benefits of shifting to ZEVs

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Of that $37 billion, health costs added up to $24 billion in 2015; the $24 billion represents the monetized sum of harmful emissions responsible for an estimated 220,000 work-loss days, more than 109,000 asthma exacerbations, hundreds of thousands of other respiratory impacts, and 2,580 premature deaths. Maryland: $2.6 billion by 2050.

Climate 150
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PNNL-led international study finds ultrafine aerosols have outsize impact on storm clouds, precipitation

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Aerosol impacts on cloud processes via this pathway are known as aerosol indirect effects, referred to as aerosol-cloud interaction in the most recent Intergovernmental Panel on Climate Change report. Aerosol impacts are a key uncertainty in understanding the current and future climate as well as extreme weather.

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Governors of 8 states sign MoU to put 3.3M zero-emission vehicles on roads by 2025; 15% of new vehicle sales

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The governors of 8 states—California, Connecticut, Maryland, Massachusetts, New York, Oregon, Rhode Island and Vermont—have signed a memorandum of understanding ( MoU ) to take specific actions to put 3.3 There are already more than 6,700 charging stations open to the public in the signatory states.

Emissions 300
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PNNL modeling study finds climate benefit for cutting soot, methane smaller than previous estimates

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Cutting the amount of short-lived, climate-warming emissions such as soot and methane won’t limit global warming as much as previous studies have suggested, according to a new study from the Joint Global Change Research Institute in College Park, Md.,

Climate 199
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California ARB mods to ZEV regulations for IVMs would result in ~1.9% drop in total ZEV/TZEV units 2018-2025; no impact on air quality requirements

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2015-2107 credit level. Currently, nine states have done so: Connecticut, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Rhode Island, and Vermont. The 2012 changes established a new optional Section 177 State compliance path. ZEV credit level by type. Definition. 2012-2104 credit level. Type III ZEV. Type IV ZEV.

2018 257
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Next 10 report finds California must increase GHG reductions to 4.9%/year through 2030 to meet target

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Assuming the same three-year average rate of reduction from 2015 to 2018 (-1.18%), California needs to quadruple the rate of reduction to achieve the 2030 goal and ramp up that rate of reduction even more to achieve the 2050 goal. MTCO 2 e per person in 2017—the third-lowest among the 50 states, behind New York and Maryland.