Posts tagged “coal”

Urban Air Pollution in Delhi, India

I’ve got some fundamental issues with this recent article in the NYT, starting with its absurd title: Beijing’s Bad Air Would Be Step Up for Smoggy Delhi. The difference between levels in Beijing and Delhi are nigh indistinguishable shades of the same grey - we’re seeing similar and important trends playing out in large urban centers. We know the levels are health damaging and we know that the exposure-response relationships for a number of health impacts are not linear - a decrease from 400 to 300 ug/m3 doesn’t incur the same benefit in a population as the decrease from, say, 150 to 50 ug/m3. The latter decrease seems to have a far more profound and substantial positive impact on health. That, of course, is not to say we shouldn’t applaud any and all decreases in ambient air pollution — but instead to emphasize that we have a long way to go to fully protect public health.

No doubt, these issues need to become more prominent in Indian discourse, as the author acknowledges:

… [For] the first three weeks of this year, New Delhi’s average daily peak reading of fine particulate matter from Punjabi Bagh, a monitor whose readings are often below those of other city and independent monitors, was 473, more than twice as high as the average of 227 in Beijing. By the time pollution breached 500 in Beijing for the first time on the night of Jan. 15, Delhi had already had eight such days. Indeed, only once in three weeks did New Delhi’s daily peak value of fine particles fall below 300, a level more than 12 times the exposure limit recommended by the World Health Organization.

“It’s always puzzled me that the focus is always on China and not India,” said Dr. Angel Hsu, director of the environmental performance measurement program at the Yale Center for Environmental Law and Policy. “China has realized that it can’t hide behind its usual opacity, whereas India gets no pressure to release better data. So there simply isn’t good public data on India like there is for China.”

Experts have long known that India’s air is among the worst in the world. A recent analysis by Yale researchers found that seven of the 10 countries with the worst air pollution exposures are in South Asia. And evidence is mounting that Indians pay a higher price for air pollution than almost anyone. A recent study showed that Indians have the world’s weakest lungs, with far less capacity than Chinese lungs. Researchers are beginning to suspect that India’s unusual mix of polluted air, poor sanitation and contaminated water may make the country among the most dangerous in the world for lungs.

But even this doesn’t tell the whole story. Rural India is fraught with air pollution concerns of a different type — that arising from solid fuel combustion for household cooking. This ‘household air pollution’ results in approximately 900,000 annual deaths in India - 10% of national mortality. It disproportionately affects the rural poor, who, for the most part, don’t have access to modern fuels for cooking, heating, or lighting. It’s estimated that approximately 700 million people - more than twice the US population - in India rely on solid fuel use for household energy needs.

I applaud the NYT for covering air pollution in Delhi and across India. That said, neither of the above articles consider air pollution out of urban centers - and neither address the fact that these types of pollution events were commonplace in now-developed countries (see Donora, PA; London Smog; Thanksgiving Day Smog, NYC, 1966 ) as they stumbled in search of progress.

Air Pollution Linked to 1.2 Million Premature Deaths in China

As Kirk pointed out in an email this morning, the NYT missed half of the problem. He wrote:

Remarkable narrow vision to fail even to mention that household air pollution has about an equal impact in the country. Even though the GBD study shows both on the same graphs, journalists and policy makers see one, but not the other. These is also an estimated 0.2 million overlap, what we call secondhand cookfire smoke, which is the portion of outdoor air due to cooking fuels in the country. If you account that to household air pollution, than the total impact of household air pollution is greater than that from outdoor air pollution due to all other sources combined (1.2 million premature deaths compared to 1.0 million).

Our work has been showing — in India and in China — that outdoor air pollution isn’t just an urban problem; it is simply measured most commonly (and thus identified most easily) in urban areas. We’re working to quantify that contribution and to make the case that cleaning up households can help clean up ambient air — in urban and rural areas.

In 2011, China consumed nearly as much coal as the rest of the world combined

From EIA’s interesting today in energy series:

Figure based on available EIA data

Coal consumption in China grew more than 9% in 2011, continuing its upward trend for the 12th consecutive year, according to newly released international data. China’s coal use grew by 325 million tons in 2011, accounting for 87% of the 374 million ton global increase in coal use. Of the 2.9 billion tons of global coal demand growth since 2000, China accounted for 2.3 billion tons (82%). China now accounts for 47% of global coal consumption—almost as much as the entire rest of the world combined.

Robust coal demand growth in China is the result of a more than 200% increase in Chinese electric generation since 2000, fueled primarily by coal. China’s coal demand growth averaged 9% per year from 2000 to 2010, more than double the global growth rate of 4% and significantly higher than global growth excluding China, which averaged only 1%.

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