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EPA: US GHG emissions up 6% in 2021 from 2020

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The decline in new light-duty vehicle fuel economy between 1990 and 2004 reflected the increasing market share of light-duty trucks, which grew from about 29.6% This report has been compiled annually since 1993 and submitted to the United Nations Framework Convention on Climate Change. of new vehicle sales in 1990 to 48.0%

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Study Concludes Warming Climate Will Increase Ozone Levels in Major California Air Basins; Climate Change and Regional Air Quality Are Intertwined Problems

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Illustration of projected ozone changes in the South Coast region due to climate change in 2050. The study also predicts that peak concentrations of dangerous airborne particles will increase in the San Joaquin Valley due to the effects of climate change on wind patterns. Click to enlarge. Nichols, ARB chairman.

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California ARB: GHG emissions fell below 1990 levels for first time in 2016; down 13% from 2004 peak; transportation emissions up 2%

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The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year. How the inventory is compiled.

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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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Significant climate anomalies 2008/2009. Source: Climate Change Compendium. Shifts in the hydrological cycle resulting in the disappearance of regional climates with related losses of ecosystems, species and the spread of drylands northwards and southwards away from the equator. Click to enlarge. Earlier post.).

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OP engine developer Achates Power closes $29.8M Series D; OGCI Climate Investments comes onboard

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Achates Power, the developer of next-generation two-stroke compression-ignition opposed-piston (OP) engines ( earlier post ) announced that OGCI Climate Investments has invested in the company’s Series-D round. —Dr Pratima Rangarajan, CEO of OGCI Climate Investments.

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New phase of globalization could undermine efforts to reduce CO2 emissions

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It found that trade among developing nations—South-South trade—more than doubled between 2004 and 2011. —Dabo Guan, professor in climate change economics at UEA’s School of International Development and co-author on both studies. Gt in 2004 and 2.2 Gt in 2004 to 1.1 —Prof Guan.

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Study finds 12-30% fuel consumption gap between certified and real-world use in China

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Since carbon dioxide emissions are highly correlated with fuel consumption (FC), fuel consumption regulation is a useful policy instrument to combat climate change. —Dror et al.

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