Changeset 197 for altifloat/doc/ocean_modelling/Draft1.tex

Timestamp:

11/20/15 10:04:13 (9 years ago)

Author:

leila_ocean

Message:

Nov 20

File:

• altifloat/doc/ocean_modelling/Draft1.tex (modified) (3 diffs)

altifloat/doc/ocean_modelling/Draft1.tex

@@ -168 +168 @@
 
 
-Our contribution focuses on the methodological aspect, and it can be considered an extension of the variational approach used in \citet{taillandier2006variational}. The first purpose is to add more physical considerations to the surface velocity estimation, without making the method too complex, in order to still allow for Near Real Time applications. We constrain the geostrophic component of that velocity to be divergence-free, and we add a component due to the effect of the wind, in the fashion done in \citet{poulain2009}. We also provide a time-continuous correction by: (i) assimilating a whole trajectory of drifters at once and (ii) using a moving time window where observations are correlated. 
+Our contribution focuses on the methodological aspect, and it can be considered an extension of the variational approach used in \citet{taillandier2006variational}. The purpose is to add more physical considerations to the surface velocity estimation, without making the method too complex, in order to still allow for Near Real Time applications. We do that by constraining the geostrophic component of that velocity to be divergence-free, and by adding a component due to the effect of the wind, in the fashion done in \citet{poulain2009}. We also provide a time-continuous correction by: (i) assimilating a whole trajectory of drifters at once and (ii) using a moving time window where observations are correlated. 
 
 We show that with few drifters, our method improves the estimation of an eddy between the Lebanese coast and Cyprus, and predicts real drifters trajectories along the Lebanese coast. 
@@ -196 +196 @@
 \includegraphics[scale=0.5]{./fig/RealvsSimulatedTraj.pdf}
 %\vspace{-30mm}
-\caption{CNRS drifters deployed in the context of the ALTIFLOAT project starting Aug 28 2013 (shown in  $-$x) , versus  trajectories simulated using the \textit{Aviso} field (shown in $\tiny{--}$).  The velocity field shown is the  \textit{Aviso} field, averaged over 6 days.}
+\caption{Altifloat drifters deployed on Aug 28 2013 (shown in  $-$x) versus  trajectories simulated using the \textit{Aviso} field (shown in $\tiny{--}$).  The velocity field shown is the  \textit{Aviso} field, averaged over 6 days.}
 \label{fig:cnrs}
 \end{center}
@@ -490 +490 @@
 \includegraphics[scale=0.5]{./fig/ReconstructedCNRSExp_6days_average.pdf}
 %\vspace{-30mm}
-\caption{\label{fig:leb1} Prediction of the positions of 3 Altifloat Drifters, launched on August 28 2013. $T_f=6$ days.  $T_w=24$ h and $\sigma=6$ h. Positions of drifters simulated with corrected field (cross markers) are shown on top of observed positions (circle markers). Corrected field is shown in red whereas background field is shown in blue. }
+\caption{\label{fig:leb1} Prediction of the positions of 3 Altifloat drifters, launched on August 28 2013. $T_f=6$ days.  $T_w=24$ h and $\sigma=6$ h. Positions of drifters simulated with corrected field (cross markers) are shown on top of observed positions (circle markers). Corrected field is shown in red whereas background field is shown in blue. }
 \end{center}
 \end{figure}