Friedlander and Seinfeld applied the Lagrangian similarity hypothesis in the first kinetic model of this phenomenon that accounted for turbulent mixing. This phenomenon’s impact on pineapple flavor led Arie Jan Haagen-Smit to invent the PCV system to control a precursor to this phenomenon. A 1948 occurrence of this phenomenon in Donora, Pennsylvania was worsened by a thermal inversion, which can cause this phenomenon’s “winter” type. This phenomenon’s sulfurous form manifests as “pea-soupers” once common in (*) London, while Los Angeles names a photochemical form of this phenomenon caused by anthropogenic NOx compounds and VOCs. Along with industrial fumes and vehicular emissions, ground-level ozone exacerbates this phenomenon in Delhi and Beijing. For 10 points, name this phenomenon of intense air pollution, a blend of smoke and fog. ■END■
ANSWER: smog [accept sulfurous smog or photochemical smog; accept smoke fog until “smoke” is read; prompt on air pollution or emissions; prompt on smoke or fog] (Arie Jan Haagen-Smit, a scholar of pineapple flavor in Los Angeles, invented the positive crankcase ventilation system, the first-ever vehicle emissions control system.)
<AS, Other Science>
= Average correct buzz position