--- manual/s_algorithm/text/tracer.tex	2004/10/17 04:14:21	1.19
+++ manual/s_algorithm/text/tracer.tex	2006/06/28 16:55:52	1.21
@@ -1,4 +1,4 @@
-% $Header: /home/ubuntu/mnt/e9_copy/manual/s_algorithm/text/tracer.tex,v 1.19 2004/10/17 04:14:21 jmc Exp $
+% $Header: /home/ubuntu/mnt/e9_copy/manual/s_algorithm/text/tracer.tex,v 1.21 2006/06/28 16:55:52 jmc Exp $
 % $Name:  $
 
 \section{Tracer equations}
@@ -627,10 +627,10 @@
 \tau^{n+1/3} & = & \tau^{n}
 - \Delta t \left( \frac{1}{\Delta x} \delta_i F^x(\tau^{n})
            + \tau^{n} \frac{1}{\Delta x} \delta_i u \right) \\
-\tau^{n+2/3} & = & \tau^{n}
+\tau^{n+2/3} & = & \tau^{n+1/3}
 - \Delta t \left( \frac{1}{\Delta y} \delta_j F^y(\tau^{n+1/3})
            + \tau^{n} \frac{1}{\Delta y} \delta_i v \right) \\
-\tau^{n+3/3} & = & \tau^{n}
+\tau^{n+3/3} & = & \tau^{n+2/3}
 - \Delta t \left( \frac{1}{\Delta r} \delta_k F^x(\tau^{n+2/3})
            + \tau^{n} \frac{1}{\Delta r} \delta_i w \right)
 \end{eqnarray}
@@ -666,6 +666,7 @@
 
 
 \section{Comparison of advection schemes}
+\label{sect:tracer_advection_schemes}
 \begin{rawhtml}
 <!-- CMIREDIR:comparison_of_advection_schemes: -->
 \end{rawhtml}
@@ -677,14 +678,17 @@
    Advection Scheme & code & use  & use Multi- & Stencil & comments \\
                     &      & A.B. & dimension & (1 dim) & \\
    \hline \hline
+   $1^{rst}$order upwind  & 1 &  No & Yes & 3 pts & linear/$\tau$, non-linear/v\\
+   \hline
    centered $2^{nd}$order & 2 &  Yes & No & 3 pts & linear \\
    \hline
    $3^{rd}$order upwind   & 3 &  Yes & No & 5 pts & linear/$\tau$\\
    \hline
    centered $4^{th}$order & 4 &  Yes & No & 5 pts & linear \\
    \hline \hline
-%  Lax-Wendroff       & 10 &  No & Yes & 3 pts & linear/tracer, non-linear/flow\\
-%  \hline
+   $2^{nd}$order DST (Lax-Wendroff)  & 20 &
+                         No & Yes & 3 pts & linear/tracer, non-linear/flow\\
+   \hline
    $3^{rd}$order DST & 30 &  No & Yes & 5 pts & linear/$\tau$, non-linear/v\\
    \hline \hline
    $2^{nd}$order Flux Limiters & 77 &  No & Yes & 5 pts & non-linear \\
