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Posts Tagged ‘EU air pollution’

China Air Pollution Affects Global Weather

Posted by feww on April 15, 2014


Asian air pollution intensifies Pacific storms: Study

Air pollution in China and other Asian countries is affecting weather patterns across the Northern Hemisphere, as well as other parts of the globe, especially during winter, according to a study.

The particulate matter in the air are carried towards the north Pacific where they interact with water droplets in the air, causing the formation of denser clouds that result in more intense storms above the ocean, say researchers.

“Since the Pacific storm track is an important component in the global general circulation, the impacts of Asian pollution on the storm track tend to affect the weather patterns of other parts of the world during the wintertime, especially a downstream region [of the storm track] like North America,” said Dr Yuan Wang, the lead author.

“The impacts of Asian pollution on the storm track tend to affect the weather patterns of other parts of the world […] the effects are quite dramatic. The pollution results in thicker and taller clouds and heavier precipitation,” said Wang.

The impact of pollution on the weather pattern intensifies in the winter.

The study is published in the Proceedings of the National Academy of Sciences (PNAS).

Wang et al PNAS
Convection depth in MMF and CAM for PD and PI over the northwest Pacific. Wang et al. PNAS


Assessing the effects of anthropogenic aerosols on Pacific storm track using a multiscale global climate model

Atmospheric aerosols affect weather and global general circulation by modifying cloud and precipitation processes, but the magnitude of cloud adjustment by aerosols remains poorly quantified and represents the largest uncertainty in estimated forcing of climate change. Here we assess the effects of anthropogenic aerosols on the Pacific storm track, using a multiscale global aerosol–climate model (GCM). Simulations of two aerosol scenarios corresponding to the present day and preindustrial conditions reveal long-range transport of anthropogenic aerosols across the north Pacific and large resulting changes in the aerosol optical depth, cloud droplet number concentration, and cloud and ice water paths. Shortwave and longwave cloud radiative forcing at the top of atmosphere are changed by −2.5 and +1.3 W m−2, respectively, by emission changes from preindustrial to present day, and an increased cloud top height indicates invigorated midlatitude cyclones. The overall increased precipitation and poleward heat transport reflect intensification of the Pacific storm track by anthropogenic aerosols. Hence, this work provides, for the first time to the authors’ knowledge, a global perspective of the effects of Asian pollution outflows from GCMs. Furthermore, our results suggest that the multiscale modeling framework is essential in producing the aerosol invigoration effect of deep convective clouds on a global scale.

What about the US and EU Shares of Air Pollution, Dr Wang?

Interestingly, the report doesn’t say much about the air pollution created by the U.S. and EU.

Related Links

For earlier posts on Beijing AQI, search blog content.

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EU Capitals Rivaling Beijing Air Pollution

Posted by feww on March 16, 2014


In case the toxic air pollution didn’t kill you…

You don’t have to be a Martian to realize not only homo erectus remain non-extinct, they go around masquerading as intelligent species…

Take the toxic air pollution, for example, which is plaguing all major cities in the world.

France restricts driving in Paris to reduce hazardous smog

The French are introducing alternative driving days in the City of Lights in an attempt to reduce hazardous levels of air pollution.

Starting Monday, drivers can only use their vehicles in Paris and surrounding areas every other day.

The government decided to curb driving after air pollution remained at hazardous levels for five consecutive days in the metropolitan Paris [population: ~ 13 million.]

The PM pollution was so severe on Friday, the authorities waved public transport fees for three days to encourage people to leave their cars at home.

The PM10 figures for Paris topped 180 micro-grams per cubic meter (μgm–³), while Brussels recorded 160, Amsterdam 110, Berlin 85 and London exceeded 80.

Smog is expected to worsen on Monday, reports said.

Beijing AQI

The Beijing AQI on Sunday was between 200 and 255, or “unhealthy” to “very unhealthy.”

Posted in environment, Global Disaster watch, global disasters, health | Tagged: , , , , , , , | 1 Comment »