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ADB Transport Forum: shift to greener transport in Asia key to global sustainability; investment of $2.5T needed by 2020

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Booming cities and rising incomes are fueling a surge in vehicle fleets across Asia. In 1980, just one in 10 motorized vehicles in the world was in Asia, but by 2030 the region is expected to account for nearly half the global total. However, Asia’s needs are vast, with estimated investments of $2.5

Asia 218
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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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Circle areas are proportional to values for (A and B) climate change, (C and D) human health (values for population over age 30), and (E and F) agriculture. Black carbon, a product of burning fossil fuels or biomass such as wood or dung, can worsen a number of respiratory and cardiovascular diseases. Source: Shindell et al.

Carbon 257
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UN Environment report says national GHG pledges only bring one-third of reductions needed for Paris Agreement

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The Paris Agreement looks to limit global warming to under 2 ˚C, with a more ambitious goal of 1.5 ˚C If the emissions gap is not closed by 2030, the report says, it is extremely unlikely that the goal of holding global warming to well below 2 ˚C can still be reached. Fuel efficiency measures could potentially reduce emissions by 0.88

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Study of emissions from CNG- and gasoline-fueled autorickshaws suggests measurements and data, not assumptions, should drive policy

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Fuel-based particulate matter emission factors (A: PM 2.5 mass, B: organic carbon fraction (OC/PM), C: elemental carbon fraction (EC/PM)), global warming commitment (D: GWC-Kyoto, E: GWC-All), and F: fuel consumption. The mean fuel-based PM 2.5 Credit: ACS, Reynolds et al. Click to enlarge. g kg -1 (6.2-26.7)) g kg -1 (0.3-0.9))

Gasoline 287
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EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

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The US Environmental Protection Agency (EPA) has submitted its final Report to Congress on Black Carbon , in response to an October 2009 request from Congress to advance efforts to understand the role of black carbon (BC) in climate change. Effects of BC on climate, as compared to GHGs. Earlier post.). Earlier post.).

Congress 252
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Analysis finds air-quality justification for CNG vehicle conversion in developing cities, despite negative climate impact

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Impact pathway approach for modeling policy interventions in (a) air quality and (b) climate impacts. An analysis by a team in Bangladesh found large air quality and associated health benefits accruing to the residents of Dhaka (the capital of Bangladesh) as a result of the rapid conversion of the motor vehicle fleet to CNG.

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2018 Environmental Performance Index: Air quality top public health threat

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The EPI uses three indicators to measure air quality: household solid fuel use; PM 2.5 India and Bangladesh come in near the bottom of the rankings, with Burundi, Democratic Republic of the Congo, and Nepal rounding out the bottom five. EPI and Global Sustainability Data. average exposure, and PM 2.5 2018 EPI Trends.

2018 300