Solar Energy News  
FROTH AND BUBBLE
Where is heavy air pollution in Beijing from
by Staff Writers
Beijing, China (SPX) Jan 10, 2017


This is a scheme showing the regional pollution over North China Plain. Image courtesy IAP. For a larger version of this image please go here.

Beijing's latest smog alert has dragged on into the first week of 2017. In fact, the joint prevention and control policy for atmospheric pollution in the Beijing-Tianjin-Hebei region was announced after the heavy haze event occurred on 1 January 2013. But it is still uncertain about what or where to control and prevent in detail.

The research group led by WANG Yuesi from the Institute of Atmospheric Physics (IAP) has monitored the evolution of regional atmospheric mixing layer height (MLH) and attenuated backscattering coefficient in the Beijing-Tianjin-Hebei region for years. Combined with the particle's chemical component online analysis, some highlighted results about the regional heavy haze formation mechanism are obtained.

"Beijing is located to the north of the North China Plain. During the initial polluted period, it is affected by southerly transport at the latitude of 500-1000 ," WANG said.

"Once the pollution is formed, the MLH will decrease quickly to 500m even lower and increase the pollutant concentration rapidly with compression mechanism. Meanwhile, the hygroscopic growth and heterogeneous chemical processes enhancement under the circumstance of high relative humidity will facilitate the explosive growth of secondary particulate matters."

The co-existence of those factors can further exacerbate the pollution degree. At this time, although the impact of regional transport is less important, the local emitted (such as motor vehicles) pollutants are unable to diffuse, thus will result in a consistent increase of the pollutant concentrations in the MLH.

The heavy haze formation in Beijing is therefore depicted as "initiate by the regional transport mainly from the coal burning in surrounding areas, and intensified by the local secondary formation originated from the motor vehicles".

This conclusion is presented in papers written by TANG Guiqian, LIU Zirui, WANG Lili, HU Bo, XIN Jinyuan and ZHU Xiaowan and is confirmed consistently by some new experimental researches.

According to these researches, suggestions are proposed to the environmental protection administration: Pre-warning should be implemented two or three days ahead of the heavy haze coming, and the regional stationary emissions especially the elevated sources should be controlled and reduced in advance.

Once the pollution formed, the local emissions should be controlled, thus the peak values of contaminant can be efficiently restrained.

Research paper


Comment on this article using your Disqus, Facebook, Google or Twitter login.


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only


.


Related Links
Institute of Atmospheric Physics, Chinese Academy of Sciences
Our Polluted World and Cleaning It Up






Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Previous Report
FROTH AND BUBBLE
Mayor of Beijing promises new environmental police force
Beijing (UPI) Jan 8, 2017
At a meeting over the weekend, Beijing's acting mayor Mayor Cai Qi announced the creation of an environmental police force. It was one of several solutions for the city's smog problems offered by officials, according to a reports by state media agency Xinhua. "Open-air barbecues, garbage incineration, biomass burning, dust from roads - these acts of non-compliance with regulations are ... read more


FROTH AND BUBBLE
Dual-purpose biofuel crops could extend production, increase profits

Open-source plant database confirms top US bioenergy crop

WSU researchers discover unique microbial photosynthesis

Potential biofuel crops in Hawaii may successfully sequester carbon in soil

FROTH AND BUBBLE
Baidu family robot a Chinese spin on Amazon Echo

Amazon Alexa virtual assistant shines at tech show

Bionic woman: Chinese robot turns on the charm

For 'intelligent' robot, chess is just a hobby

FROTH AND BUBBLE
New York sets bar high for offshore wind

The answer is blowing in the wind

French power group aims to double wind capacity

New rules for micro-grids in Alberta

FROTH AND BUBBLE
New technology will cut plug-in hybrid fuel consumption by one third

VW directors knew of emissions scandal earlier: press

NAVYA Self-driving shuttle goes to work in Las Vegas

Cadillac keeps plan to sell Chinese-made cars in US

FROTH AND BUBBLE
Scientists discover a molecular motor has a 'gear' for directional switching

Rolling out an e-sticker revolution

Tenfold jump in green tech needed to meet global emissions targets

Tesla starts mass production of batteries

FROTH AND BUBBLE
France sells off Engie stake to finance Areva rescue

EU clears French rescue of troubled nuclear firm Areva

UK asks regulators to assess Chinese nuclear reactor

Controversial nuclear power plant near New York to close

FROTH AND BUBBLE
China to build $1.5 billion power line across Pakistan

MIT Energy Initiative report provides guidance for evolving electric power sector

Toward energy solutions for northern regions

Energy-hungry Asia slowing down, lender says

FROTH AND BUBBLE
In cool forests, foraging bees prefer the warmth of darker flower petals

Scientists try turning Christmas trees into plastic

Obama creates two new national monuments

Amazonia's best and worst areas for carbon recovery revealed









The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.