CORRESPONDENCE Comments on ''An Extremum Solution of the Monin-Obukhov Similarity Equations''

Recently, Wang and Bras (2010, hereafter WB10)postulated an extremum hypothesis (EH) of turbulenttransportintheatmosphericsurfacelayer(ASL).Basedon this hypothesis, they derived a unique solution of thewell-knownMonin–Obukhovsimilaritytheory(MOST)equations.Throughoutthepaper,WB10highlightedthesignificance of EH and associated results. We summa-rize a few of their claims below (mostly in the authors’own words):