US, Jan 26, 2017: A new study finds that cookstoves, used for cooking and heating inside homes in many developing countries, contribute to outdoor air pollution and have a significant impact on climate change.

An estimated 40 percent of the global population use cookstoves that burn solid fuels such as wood. Most studies of cookstoves focus on the health impacts in and around homes where they are used. Those reports show that up to a half-million people are thought to die every year as a result of inhaling fine particulate matter and soot emitted by cookstoves into outdoor air.

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Now, a new study looks at the air quality and climate impacts of cookstoves on a global scale.

Scientists at the University of Colorado in Boulder and Dalhousie University in Halifax, Canada, used satellites owned by the U.S. space agency NASA, along with supercomputers that modeled cookstove pollution country by country.

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Results showed that cookstoves used in Baltic countries like Azerbaijan, Ukraine and Kazakhstan had an enormous impact on climate change, according to Forrest Lacey, co-author of the study, which was published in the journal Proceedings of the National Academy of Sciences.

"In general, it's more of the northern latitude countries," Lacey said. "So that's why we're seeing like the central Asian countries and Ukraine or Romania, because they actually get a lot of transport on the snow of black carbon, which has an amplified warming impact."

Impact on Arctic

Some of these carbon deposits can blow as far north as the Arctic, which is experiencing the greatest climate impact caused by greenhouse gases.

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The use of cookstoves in populous countries like India and China also has a huge impact on climate change because of the sheer numbers of stoves that are used. But reducing the use of cookstoves in the Baltics, said the authors, would have the greatest benefit in terms of improving climate and air quality.

NGOs hope to distribute millions of clean stoves around the world this year, according to Lacey, making a sizeable dent in the estimated 100 million cookstoves that are used globally.

Not only would a large-scale reduction in solid fuel cookstoves improve local air quality, said the authors, it would benefit the global climate, too. (VOA)