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April 2019 Archives

Machine-learned modeling of PM2.5 exposures in rural Lao PDR

Hill LD, Pillarisetti A, Delapena S, Garland C, Pennise D, Pelletreau A, Koetting P, Motmans T, Vongnakhone K, Khammavong C, Boatman MR, Balmes K, Hubbard A, Smith Kr. 2019. Machine-learned modeling of PM2.5 exposures in rural Lao PDR. Science of The Total Environment, https://doi.org/10.1016/j.scitotenv.2019.04.258.

Modeling the Impact of an Indoor Air Filter on Air Pollution Exposure Reduction and Associated Mortality in Urban Delhi Household

Liao J, Ye W, Pillarisetti A, Clasen TF. Modeling the Impact of an Indoor Air Filter on Air Pollution Exposure Reduction and Associated Mortality in Urban Delhi Household. Int. J. Environ. Res. Public Health 2019, 16(8), 1391; https://doi.org/10.3390/ijerph16081391    Supplementary Information

Indian annual ambient air quality standard is achievable by completely mitigating emissions from household sources

Chowdhury S, Dey S, Guttikunda S, Pillarisetti A, Smith KR, Di Girolamo L. Indian annual ambient air quality standard is achievable by completely mitigating emissions from household sources. Proceedings of the National Academy of Sciences Apr 2019, 201900888; DOI: 10.1073/pnas.1900888116. Supporting Information.

John Balmes: Don't Let a Killer Pollutant Loose

Professor John Balmes, close colleague and friend, and physician member of the California Air Resources Board:

PM 2.5 kills people. There has been little dispute that microscopic particulate matter in air pollution penetrates into the deepest parts of the lungs and contributes to the early deaths each year of thousands of people in the United States with heart and lung disease.

One recent study called PM 2.5 “the largest environmental risk factor worldwide,” responsible for many more deaths than alcohol use, physical inactivity or high sodium intake.

The Environmental Protection Agency’s own website says: “Numerous scientific studies have linked particle pollution exposure to a variety of problems, including: premature death in people with heart or lung disease, nonfatal heart attacks, irregular heartbeat, aggravated asthma, decreased lung function, increased respiratory symptoms.”

Which makes it deeply troubling that the very people at the helm of the Trump administration’s E.P.A. responsible for protecting public health and the environment are now pursuing a course that would make the air we breathe even more hazardous.

Promoting LPG usage during pregnancy: A pilot study in rural Maharashtra, India

Pillarisetti A*, Ghorpade M, Madhav S, Dhongade A, Roy S, Balakrishnan K, Sankar S, Patil R, Levine DI, Juvekar S, Smith KR (2019) Promoting LPG usage during pregnancy: A pilot study in rural Maharashtra, India. Environment International 127:540-549.     Supporting Information (.docx)

Understanding Air Pollution with Art: "The Air of the Anthropocene" and "Mutual Air"

Playground, India Institute of Technology Campus, Delhi, India - PM2.5 500 - 600 µg/m3

Artist Robin Price and Professor Francis Pope use experimental photography to “see” small particles as part of their “Air of the Anthropocene” project (h/t Zoe Chafe). The photos are stunning. From a Guardian piece highlighting many of the photos:

Using a custom-built digital light painter and wearable particulate sensor, I take long exposure photographs that paint the amount of PM2.5 particles in the air as particles of light. As the light painter’s sensor detects more pollution it draws correspondingly greater numbers of light particles into the photograph. The effect is as if the microscopic pollution has been enlarged and lit up, shedding light on the invisible particles.

Meanwhile, in the Bay Area, Artist Rosten Woo uses chimes to make air pollution audible:

Mutual Air is a network of roughly thirty specially designed bells that generate a soundscape reflecting and responding to the changing composition of our local and global atmosphere. By sonifying air-quality fluctuations, Woo hopes​ to engage the public in an experiential understanding of climate science and how aspects of our atmosphere, while a shared resource, reflect socioeconomic disparities.

His work was featured on PBS News Hour:

See also Smog Meringues and British Pathe - Air Pollution

Indian Election Analysis: Election manifestos feature air plan but little action on ground

A new report titled “Political Leaders Position and Action on Air Quality in India” released by Climate Trends also highlighted that members of parliament in 14 Indian cities, among the most polluted cities globally as per the WHO 2018 urban air quality database, have done little to get their cities to comply with safe air quality standards locally.

“The manifestos of both the national parties have proven that political parties cannot ignore and neglect air pollution related health emergency any more. This rhetoric is a good sign. But the bigger question is - if this electoral promise will translate into strong enough political will to push for hard action with accountability and show results,” said Anumita Roychowdhury, executive director, Centre for Science and Environment. Delhi’s air pollution levels recorded a fall in 2018 because of multiple strategies, she added.

Energy and Health in the 2019 BJP Manifesto

The BJP’s Manifesto was released in the last few days. A little hard to hunt down, initially, though a PDF is hosted at documentcloud.

In a section that is partly a list of achievements and partly a description of next steps:

We have evolved technologically better strategies and devices to map the level of pollution in cities and rivers and have taken effective steps to reduce the level of pollution in major cities, including the national capital. We will convert the National Clean Air Plan into a Mission and we will focus on 102 most polluted cities in the country. Through concerted action, we will reduce the level of pollution in each of the mission cities by at least 35% over the next five years.

Another part of he Manifesto is framed around 75 milestones for India’s 75th anniversary, including some focusing on health, energy, air pollution, and water & sanitation.

Under Infrastructure:

Ensure a pucca house to every family. Ensure the LPG gas cylinder connection to all poor rural households. Ensure 100% electrification of all households. Ensure a toilet in every household. Ensure access to safe and potable drinking water for all households. Bharat Mission to achieve ODF+ (Open Defecation Free) and ODF++ in cities and villages. Ensure ODF status for all villages and cities.

Under good governance:

Work towards substantially reducing the current levels of air pollution. Work towards completely eliminating crop residue burning to reduce air pollution.

A running list of how President Trump is changing environmental policy

McClatchy reporting today:

The Trump campaign is seeking a list of “climate change victories” that can be attributed to Donald Trump’s presidency, reflecting a shift in strategy ahead of the 2020 election as polls show growing voter concern over global warming, two sources familiar with the campaign told McClatchy this week.

To hell with that. National Geographic has provided an excellent rebuttal with “A running list of how President Trump is changing environmental policy”. They peg it at a 70 minute read.

Some highlights:






Washington Post: If I were still working at the EPA, I would resign

Bernard D. Goldstein, former chairman of the Clean Air Scientific Advisory Committee and EPA assistant administrator for R&D under Reagan:

I had hoped that Wheeler would reverse Pruitt’s initial policies. Instead, he has taken them well beyond the point that, were I a member of CASAC, I would have resigned. Neither my conscience, nor my concern for the respect of my peers, would have allowed me to provide advice on a complex health-related subject when I cannot interact in a scientific consensus advisory process with those who have the necessary expert credentials.

I cannot ask President Trump’s EPA assistant administrator for research and development to resign. That position remains unfilled. Nor is it likely that any credible scientist would accept such a nomination. But I urge the current members of CASAC to step down rather than seemingly acquiesce to this charade. The EPA’s leadership is destroying the scientific foundation of environmental regulations, to the detriment of the health of the American people and our environment.

Read the whole thing.

New Yorker: The Hidden Air Pollution in Our Homes

Nice piece by Nicola Twilley, co-host of Gastropod:

“So there is a big question here,” Marina Vance pointed out. “If all these studies have found an association between outdoor air pollution and a decrease in life quality and life expectancy, but we’re not outside, how does that relationship still hold?”

One possibility is that the brief moments we spend outdoors have an outsized impact on our health. Another consideration is that outdoor pollutants can and do come inside. But one homechem researcher, Allen Goldstein, recently co-authored a paper that suggests a fascinating inversion. The dominant source of VOCs in Los Angeles is now emissions from consumer products, including toiletries and cleaning fluids. In other words, vehicle emissions have been controlled to such an extent that, even in the most car-clogged city in America, indoor air that has leaked outdoors may create more smog than transportation does.

It’s true — some surveys done in the last couple of decades show that people in North America spend, on average, 90% of their time indoors. It’s unlikely that our air pollution exposures — measured as ambient concentrations at central sites, far from where we live and spend time — capture what’s really going on.

One point of contention with this article — despite some nice historical thinking on the relationships between indoor and outdoor air, there was no mention of the very large exposures that continue in the developing world, where solid fuels like wood, grass, dung, and coal are used indoors. A substantial oversight.

Update: Nicola Twilley wrote on twitter that mention of the developing world didn’t make the final version.