<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Note that said equation 18 is not defined for Lo<0 for which etaStar should be set to 1, but the formula goes to 0 for Lo -> 0, so that there will be jump/discontinuity at Lo = 0 (from 0 to 1). This may be one of the reasons (appart from the unclear Lo), why this formula was never implemented.<div class=""><br class=""></div><div class="">Martin<br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On 29. Sep 2022, at 07:54, Martin Losch <<a href="mailto:Martin.Losch@awi.de" class="">Martin.Losch@awi.de</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Josephine,<div class=""><br class=""></div><div class="">I am not aware of any attemps, but there’s a code sketch that is commented out (see around lines 482-484 in shelfice_thermodynamics.F).<div class=""><br class=""></div><div class="">The H+J99 paper does not describe, how to evaluate the Obukhov length Lo, but otherwise is should be straightforward to implement this (f=fCori(i,j,bi,bj), Rc=0.2, zetaN=0.052 according to table1 in H+J99). </div><div class=""><br class=""></div><div class="">Martin<br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On 28. Sep 2022, at 19:11, Josephine Anselin - BAS <<a href="mailto:joslin53@bas.ac.uk" class="">joslin53@bas.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Hi all,<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">In shelfice_thermodynamics.F (within the SHELFICE Package), the stability parameter (etastar) is set to 1.<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Has anyone tried to modify the code to compute the stability parameter as per Equation 18 in Holland & Jenkins (1999). If yes, is the modified version available online?<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Many thanks,<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif; background-color: white; vertical-align: baseline;" class=""><span style="font-size: 10pt; border: 1pt none windowtext; padding: 0cm;" class="">_________________________________________</span><span class=""><o:p class=""></o:p></span></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class=""><span lang="EN-US" class="">Joséphine Anselin</span></b><span class=""><o:p class=""></o:p></span></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><i class=""><span class="">Physical Oceanography PhD Student</span></i><span class=""><o:p class=""></o:p></span></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="EN-US" class="">British Antarctic Survey, Polar Oceans Team</span><span class=""><o:p class=""></o:p></span></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="EN-US" class="">University of Cambridge, Applied Mathematics</span><span class=""><o:p class=""></o:p></span></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">This email and any attachments are intended solely for the use of the named recipients. 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