“…It is considered to be currently among the most accurate micrometeorological techniques to calculate dispersion and determine emission rates (Denmead, 2008;Laubach, 2010;Loubet et al, 2010). It has been applied to assess methane and/or NH 3 emissions from agricultural fields fertilised with slurry (Sanz et al, 2010) and urea (Sommer et al, 2005), grazed fields (Denmead et al, 2004;Laubach and Kelliher, 2005;Laubach et al, 2008;Laubach, 2010), cattle feedlots McGinn et al, 2007;van Haarlem et al, 2008;Loh et al, 2008), and even complete farms (Flesch et al, 2009). The bLS calculates emissions accurately provided homogeneously emitting source areas (or well represented point sources), a precise monitoring of c bgd and a largely undisturbed wind field, i.e.…”