/[MITgcm]/MITgcm_contrib/articles/ceaice/ceaice_adjoint.tex
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revision 1.7 by mlosch, Mon Jul 28 12:34:27 2008 UTC revision 1.8 by mlosch, Tue Jul 29 08:34:22 2008 UTC
# Line 212  The temporal evolution of several ice ex Line 212  The temporal evolution of several ice ex
212  \ml{[which equation do you mean?]}) along a zonal axis through  \ml{[which equation do you mean?]}) along a zonal axis through
213  Lancaster Sound, Barrow Strait, and Melville Sound (115\degW\ to  Lancaster Sound, Barrow Strait, and Melville Sound (115\degW\ to
214  80\degW, averaged across the passages) are depicted as Hovmueller  80\degW, averaged across the passages) are depicted as Hovmueller
215  diagrams in \reffig{lancaster}. These are, from top to bottom, the  diagrams in \reffig{lancasteradj}. These are, from top to bottom, the
216  sensitivities with respect to effective ice thickness ($hc$), ocean  sensitivities with respect to effective ice thickness ($hc$), ocean
217  surface temperature ($SST$) and precipitation ($p$) for free slip  surface temperature ($SST$) and precipitation ($p$) for free slip
218  (left column) and no slip (right column) ice drift boundary  (left column) and no slip (right column) ice drift boundary
# Line 220  conditions. Line 220  conditions.
220  %  %
221  \begin{figure*}  \begin{figure*}
222    \includegraphics*[height=.8\textheight]{\fpath/lancaster_adj}    \includegraphics*[height=.8\textheight]{\fpath/lancaster_adj}
223    \caption{Hovermoeller diagrams of sensitivities (derivatives) of the    \caption{Hovermoeller diagrams along the axis Viscount Melville
224      ``solid'' fresh water (i.e., ice and snow) export $J$ through Lancaster sound      Sound/Barrow Strait/Lancaster Sound. The diagrams show the
225        sensitivities (derivatives) of the ``solid'' fresh water (i.e.,
226        ice and snow) export $J$ through Lancaster sound
227      (\reffig{arctic_topog}, cross-section G) with respect to effective      (\reffig{arctic_topog}, cross-section G) with respect to effective
228      ice thickness ($hc$), ocean surface temperature (SST) and      ice thickness ($hc$), ocean surface temperature (SST) and
229      precipitation ($p$) for two runs with free slip and no slip boundary      precipitation ($p$) for two runs with free slip and no slip
230      conditions for the sea ice drift. Also shown it the normalized ice      boundary conditions for the sea ice drift. Each plot is overlaid
231      strengh $P/P^*=(hc)\,\exp[-C\,(1-c)]$ (bottom panel); each plot is      with the contours 1 and 3 of the normalized ice strengh
232      overlaid with the contours 1 and 3 of the normalized ice strength      $P/P^*=(hc)\,\exp[-C\,(1-c)]$ for orientation.
233      for orientation.      \label{fig:lancasteradj}}
234      \label{fig:lancaster}}  \end{figure*}
235    %
236    \begin{figure*}
237      \includegraphics*[height=.8\textheight]{\fpath/lancaster_fwd}
238      \caption{Hovermoeller diagrams along the axis Viscount Melville
239        Sound/Barrow Strait/Lancaster Sound of effective ice thickness
240        ($hc$), effective snow thickness ($h_{s}c$) and normalized ice
241        strengh $P/P^*=(hc)\,\exp[-C\,(1-c)]$ for two runs with free slip
242        and no slip boundary conditions for the sea ice drift. Each plot
243        is overlaid with the contours 1 and 3 of the normalized ice
244        strength for orientation.
245        \label{fig:lancasterfwd}}
246  \end{figure*}  \end{figure*}
247  %  %
248    
# Line 307  leading to less ice export in the next s Line 320  leading to less ice export in the next s
320  \ml{[Here we need for integrations to show that the adjoint  \ml{[Here we need for integrations to show that the adjoint
321    sensitivites are not just academic. I suggest to perturb HEFF    sensitivites are not just academic. I suggest to perturb HEFF
322    and THETA initial conditions, and PRECIP somewhere in the Melville    and THETA initial conditions, and PRECIP somewhere in the Melville
323    Sound and then produce plots similar to reffig{lancaster}. For    Sound and then produce plots similar to reffig{lancasteradj}. For
324    PRECIP it would be great to have two perturbation experiments, one    PRECIP it would be great to have two perturbation experiments, one
325    where ADJprecip is posivite and one where ADJprecip is negative]}    where ADJprecip is posivite and one where ADJprecip is negative]}
326        

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