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<p style="margin-top:0;margin-bottom:0">Hi all,</p>
<p style="margin-top:0;margin-bottom:0">           I have a question regarding the value of the atmospheric emissivity used by cheapaml. Here is a snippet of code from the file cheapaml.F computing the upward longwave radiation (xalwu) emitted through the top
 of the ABL and the downward radiation (xalwd) through the "bottom" (= reference height of atmospheric variables in cheapaml).<br>
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<div>           xalwu = stefan*(0.5*Tair(i,j,bi,bj)+0.5*ttt+celsius2K)**4<br>
     &                   *0.5 _d 0</div>
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<p style="margin-top:0;margin-bottom:0"><span>          xalwd = stefan*(Tair(i,j,bi,bj)+celsius2K)**4*0.5 _d 0</span></p>
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<p style="margin-top:0;margin-bottom:0"><span>In each of these expressions, there is a 0.5 at the end of the expression. Is that supposed to be the atmospheric emissivity?
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<p style="margin-top:0;margin-bottom:0"><span>Thanks,</span></p>
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<p style="margin-top:0;margin-bottom:0"><span>Sanjiv Ramachandran</span></p>
<p style="margin-top:0;margin-bottom:0"><span>UMass Dartmouth</span><br>
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