[Stoves] Fwd: [stove and climate] Another estimate, and the largest one yet.

[Paul Anderson]

Stovers,

The message below reached me (and a few other subsrcibers) from the 
stove network of Kirk Smith.   Note his comment about the Ministry of 
Petroleum and the Ministry of Environment.    And the abstract is from 
an interesting study.

If ALL cookstoves emissions in India could be removed (impossible, but 
the construct is of interest), the attributed annual pre-mature 
mortality because od 2.5 PM in the air would only be cut in half. 
Reason:  there is still so much other PM2.5 from other sources.

Paul


-------- Forwarded Message --------
Subject: 	[stove and climate] Another estimate, and the largest one yet.
Date: 	Thu, 15 Mar 2018 15:17:27 -0700
From: 	Kirk R. SMITH
To: 	



This is the fifth such estimate known to us, three being 24-29% and two, 
like this one, being close to 50%.    Different methods, databases, 
assumptions, etc and we are in the course of preparing a policy paper 
describing the issues and what can be concluded overall.     Main point, 
however, is that being big and probably the largest single source 
category in the country, one must address with household fuels in the 
fight to deal with the terrible ambient pollution in India as well, of 
course, as vehicles, power plants, industries, etc.    At present, 
however, the  national LPG program is entirely coming from the Ministry 
of Petroleum as household fuels are essentially ignored as a source of 
ambient pollution by the Ministry of Environment, which has the air 
pollution portfolio./k

Residential energy use emissions dominate health impacts from exposure 
to ambient particulate matter in India

Luke Conibear, Edward W. Butt, Christoph Knote, Stephen R. Arnold, 
Dominick V. Spracklen, 2018, /Nature Communications, 9 (617). /

DOI: 10.1038/s41467-018-02986-7

Full article: https://www.nature.com/articles/s41467-018-02986-7

Abstract: Exposure to ambient fine particulate matter (PM2.5) is a 
leading contributor to diseases in India. Previous studies analysing 
emission source attributions were restricted by coarse model resolution 
and limited PM2.5 observations. We use a regional model informed by new 
observations to make the first high-resolution study of the 
sector-specific disease burden from ambient PM2.5 exposure in India. 
Observed annual mean PM2.5 concentrations exceed 100 μg m−3 and are well 
simulated by the model. We calculate that the emissions from residential 
energy use dominate (52%) population-weighted annual mean PM2.5 
concentrations, and are attributed to 511,000 (95UI: 340,000–697,000) 
premature mortalities annually. However, removing residential energy use 
emissions would avert only 256,000 (95UI: 162,000–340,000), due to the 
non-linear exposure–response relationship causing health effects to 
saturate at high PM2.5 concentrations. Consequently, large reductions in 
emissions will be required to reduce the health burden from ambient 
PM2.5 exposure in India.

Kirk R. Smith, MPH, PhD <krksmith at berkeley.edu 
<mailto:krksmith at berkeley.edu>>

Professor of Global Environmental Health

Director, Collaborative Clean Air Policy Centre, Delhi

747 University Hall, School of Public Health

University of California Berkeley, 94720-7360 USA

510-643-0793; fax 642-5815

http://www.kirkrsmith.org/

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