Ke Li

Lightning Source of Nitrogen Oxides (NO x ) Inferred From Geostationary Satellites: Global Implications for Oxidant Chemistry

Abstract Lightning is a major source of nitrogen oxide radicals (NO x ≡ NO + NO 2 ), but large uncertainties in NO x yields per flash hinder accurate quantification of emissions and impacts on oxidant chemistry. We use 1 year of concurrent geostationary satellite observations of...

An underappreciated cyclonic-like circulation affects high summer ozone in North China Plain

China continues to experience severe ozone pollution, particularly over the North China Plain (NCP) during summer. Ozone pollution is generally considered to be associated with anticyclonic circulation. However, this study reveals that a previously underappreciated cyclonic-like...