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Reply to “Comments on ‘A Density Current Parameterization Coupled with Emanuel’s Convection Scheme. Part I: The Models’”

Abstract : In the original paper of this discussion, Grandpeix and Lafore (2010, hereafter GL10) presented a density current parameterization coupled with Emanuel’s convection scheme. Jun-Ichi Yano’s comment (Yano 2012, hereafter Yc12) questions various formulas of this parameterization and proposes new ones following an approach based on segmentally constant approximation (SCA; Yano et al. 2010). Essentially, Yc12 ascertains an overall agreement between the new formulas and the GL10 ones, the proposed modifications amounting to the introduction of new terms representing various processes neglected in GL10. Yet Yc12 claims that it was a mistake not to use SCA for the wake equation derivation. Although we acknowledge the interest of the new developments presented by Yc12, we think that the very existence of two different ways of developing wake models should be considered as very positive. Let us emphasize, however, that most of the equations put forward by Yc12 have never been published and appear for the first time in this comment: what we are dealing with here is not really a comment but rather a note about new developments of SCA. Our reply to Yc12 is structured in two parts: 1) a first part devoted to a global analysis of Yc12 and of its relevance for the wake model of GL10, and 2) a second part (hereafter referred to as the appendix) that contains detailed item-by-item responses to Yano’s remarks. In what follows, we shall keep the equation numbering proposed in Yc12: all of the equations numbered without a prefix are those from GL10, unless otherwise noted. The equations in Yc12’s main text and appendix are numbered with prefixes 2 and A, respectively.
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Jean-yves Grandpeix, Jean-Philippe Lafore. Reply to “Comments on ‘A Density Current Parameterization Coupled with Emanuel’s Convection Scheme. Part I: The Models’”. Journal of the Atmospheric Sciences, American Meteorological Society, 2012, 69 (6), pp.2090. ⟨10.1175/JAS-D-11-0127.1⟩. ⟨hal-01116769⟩



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