Beijing

Policies and investments to address climate change and air quality in the Beijing–Tianjin–Hebei Region

This report shows how air quality in the People's Republic of China's fast-growing Beijing-Tianjin-Hebei industrial hub has deteriorated and presents an integrated, cost-effective model to reduce carbon emissions and other pollutants. Analyzing the costs and benefits of different scenarios, it sets out a modeling framework and shows how adapting policies …

Household fuels major source of Beijing smog: study

Household fuels exceed power plants and cars as a source of smog in China, according to a new study which found that the government could dramatically improve air quality with more attention to an overlooked source of outdoor pollution - residential cooking and heating. "Coal and other dirty solid fuels …

Imaging land subsidence induced by groundwater extraction in Beijing (China) using satellite radar interferometry

Beijing is one of the most water-stressed cities in the world. Due to over-exploitation of groundwater, the Beijing region has been suffering from land subsidence since 1935. In this study, the Small Baseline InSAR technique has been employed to process Envisat ASAR images acquired between 2003 and 2010 and TerraSAR-X …

A review of air pollution control in Beijing: 1998-2013

Since 1998, Beijing has prioritized air pollution control and moved aggressively to control emissions from all sources. The city’s efforts in this endeavour over the past 15 years is comprised of several elements — scientific research (emission inventories, monitoring and modelling), coordination (multiple pollutants, all sectors, and join efforts with …

In China, drones will monitor pollution sources

BEIJING: Three unmanned aerial vehicles have been deployed by China at its environment monitoring station in Hebei to identify possible polluting activities and help cut down pollution in the province. The UAVs, two with fixed-wings and one with multi-rotors, will take aerial photographs of suspect factories and workshops to provide …

Truth behind Chinese superstition: non-linear effects of vehicle traffic on urban air quality in Beijing

Employing hourly data records from 2013 and 2014 in Beijing, investigate the causal effects of vehicle traffic on air pollution. An arguably exogenous variation in vehicle use that results from the staggered and rotating driving restriction program there, combined with a widespread Chinese superstition about the unlucky number four, allows …

Markedly enhanced absorption and direct radiative forcing of black carbon under polluted urban environments

Although black carbon (BC) represents a key short-lived climate forcer, its direct radiative forcing remains highly uncertain. The available results from available studies of absorption enhancement of BC particles during atmospheric aging are conflicting. Using a novel environmental chamber method, we have, for the first time to our knowledge, quantified …

Contrasting impacts of urban forms on the future thermal environment: example of Beijing metropolitan area

This study investigated impacts of urban forms on the future thermal environment over Beijing, the capital city of China. Beijing is experiencing remarkable urban expansion and is planned to undergo the transformation of urban forms from single-centric (compact-city)to poly-centric city (dispersedcity). Impacts of urban forms on the future thermal environment …

As air worsens, New Delhi turns to masks

It isn't just sweaters the kindergartners are wearing as they pour out of their classrooms onto the lawns of the American Embassy School in Delhi. They are also wearing face masks. The school does not require students to wear air filtration masks against the polluted air here, the worst in …

Exposure to air pollution may increase obesity, diabetes risk

Exposure to polluted air may increase the risk of obesity and lead to high cholesterol and more insulin resistance, a precursor of Type 2 diabetes, a new study has warned. Researchers from Duke University in US found that laboratory rats who breathed Beijing's highly polluted air gained weight and experienced …

No Shanghai in sight, just Beijing smog

Today if you dare to walk down Ahmedabad's busy IIM-Keshavbaugh or Mani nagar road stretches during peak hours you will be exposed to a level of pollution that is almost 10 to 12 times more toxic than what is acceptable under the current central pollution control board standards. What is …

As Delhi debates, Beijing acts to check air pollution

NEW DELHI/BEIJING: While Delhi continues to debate the 'tough' anti-pollution measures announced by the city government, China's capital Beijing on Monday issued its first "red alert" on air pollution since 2013, taking tougher and immediate measures to deal with a problem which appears to be comparable to what Delhiites face …

Scenario-based multi-objective optimum allocation model for earthquake emergency shelters using a modified particle swarm optimization algorithm: A case study in Chaoyang District, Beijing, China

The correct location of earthquake emergency shelters and their allocation to residents can effectively reduce the number of casualties by providing safe havens and efficient evacuation routes during the chaotic period of the unfolding disaster. However, diverse and strict constraints and the discrete feasible domain of the required models make …

Bad air: Delhi races ahead of Beijing

NEW DELHI: After a neck-and-neck race with Beijing over the past few winters, Delhi may soon find itself without a rival for the 'most-polluted-city' crown. The Chinese city is doing its best to fall behind although, as happened last week, it sometimes nudges ahead with a wind-aided spurt. A recent …

Three more Chinese dams on Brahmaputra

510 MW Zangmu hydel project became operational in October: Sushma China has approved the construction of three more dams on the Brahmaputra river in Tibet region apart from the Zangmu hydroelectric project that started operations in October, External Affairs Minister Sushma Swaraj said on Thursday. "The 'Outline of the 12th …

Smog capitals: Alert in Beijing, business as usual in Delhi

NEW DELHI: As world leaders met in Paris on Monday to commit to a united fight against climate change, the capitals of India and China remained blanketed in heavy smog triggered by pollution. The difference was that Beijing sounded an alert for its citizens while in Delhi it was business …

Beijing air pollution reaches extremely hazardous levels

Beijing suffered its worst air pollution of the year on Monday, with monitoring sites throughout the city reporting extremely hazardous levels of pollutants. City authorities issued a rare orange alert, the second highest of four danger levels. Schools suspended outdoor activities and polluting factories were required to reduce production. Visibility …

Case studies in improving urban air quality

This study by the International Gas Union (IGU) highlights the interconnection that exists between reducing greenhouse gas emissions and reducing emissions of other air pollutants. It presents case studies of efforts in four cities — New York, Istanbul, Toronto, and Beijing — that have tackled or are tackling the issue …

All-sky direct radiative effects of urban aerosols in Beijing and Shanghai, China

Aerosol particles can directly alter the radiation balance by scattering and absorbing incident solar radiation, thus decreasing the amount of light reaching the surface and increasing the fraction of diffuse radiation—the so-called ‘aerosol direct radiative effect’. Using the Moderate Resolution Imaging Spectroradiometer aerosol products, the aerosol direct radiative effects under …

Air pollution in China: Mapping of concentrations and sources

China has recently made available hourly air pollution data from over 1500 sites, including airborne particulate matter (PM), SO2, NO2, and O3. We apply Kriging interpolation to four months of data to derive pollution maps for eastern China. Consistent with prior findings, the greatest pollution occurs in the east, but …

Air pollution in China: Mapping of concentrations and sources

China has recently made available hourly air pollution data from over 1500 sites, including airborne particulate matter (PM), SO2, NO2, and O3. We apply Kriging interpolation to four months of data to derive pollution maps for eastern China. Consistent with prior findings, the greatest pollution occurs in the east, but …

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