Remove 2011 Remove Climate Remove Environment Remove Ozone
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Study: 2/3 of aviation climate impact due to emissions other than CO2

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of the human-made climate impact; two-thirds of this impact are caused by emissions other than CO 2 , according to a new study by researchers in Europe and the US. The study was published in the journal Atmospheric Environment. Seen together, the climate impact of these two factors is bigger than that of the sector’s carbon emissions.

Climate 448
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UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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The climate change benefit is estimated for 2050 and human health and crop benefits are for 2030 and beyond. Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Global benefits from full implementation of the identified measures in 2030 compared to the reference scenario.

Ozone 218
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Study: curbing diesel emissions could reduce mortality rates in big cities

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Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.

Emissions 286
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Indo-US task force to study HFC phase-down

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India’s Minister of Environment, Jairam Ramesh, hosted US Deputy Assistant Secretary of State for Environment, Daniel A. The Joint Task Force will submit its report by 1 August 2011. Reifsnyder, in New Delhi, along with members of industry and civil society groups to discuss the HFC issue.

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MIT researchers improve upon methods to model urban air pollution

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The new metamodel is capable of efficiently simulating the urban concentration, surface deposition, and net export flux of these species that are important to human health and the global climate. These pollutants include anthropogenic aerosols, which have important climate and health implications. —Jason Cohen. Cohen, J.B.,

MIT 199
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Volkswagen to use CO2 as refrigerant for future air conditioning systems

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(R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer. With its GWP of 1, it is also the refrigerant that has the least impact on climate. CO 2 is an A1 refrigerant, indicating minimal toxicity and non-flammability. transition to a new refrigerant is not easy.

Future 311