In-field greenhouse gas emissions from cookstoves in rural Mexican households

摘要: The majority of estimates the greenhouse gas emissions associated with changes from traditional to improved cookstoves in developing countries come water-boiling tests (WBTs) conducted simulated kitchens. Little is known about bias these relative typical stove use by residents rural communities. To assess this bias, reductions as a result installation an wood-burning “Patsari” were quantified both kitchens and field conditions eight homes open fire stoves 13 Patsari Purepecha communities Michoacan, Mexico. results demonstrate that nominal combustion efficiencies (NCEs) significantly lower (p<0.001) during daily cooking activities (89.7±2.0%) compared WBTs (94.2±0.5%), which almost doubling products on incomplete (PICs) emitted. Since residential sector are important modeling atmospheric trace concentrations areas rely solid fuel for primary energy provision, if fires reflect other world, substantial underestimation may be present current emission databases. Conversely, NCEs higher (p<0.01) (92.3±1.3%) (87.2±4.3%), do not homes. Thus emits 25% less PICs per kg fuelwood used than fire, carbon similar also likely underestimated. Finally, addition reduction overall particulate activities, ratio organic (OC) elemental (EC) within aerosol fraction decreased between stoves. While EC contribution brick was reduced, increased OC, makes warming implication more ambiguous given uncertainties cooling potentials fractions.