Hello, my name is Bruno Blanke.
I've been a researcher at the CNRS
for about thirty years now.
My field of specialty is physical oceanography.
I've worked here, just outside the city of Brest
since 1997
at the Institut Universitaire Européen de la Mer (IUEM)
in a laboratory called
Laboratoire d’Océanographie Physique et Spatiale
or 'LOPS'.
During my activity as a researcher,
it soon became clear
that the understanding and analysis of ocean currents
correspond very well with Lagrangian analysis.
That's why, in 1992,
a digital tool was created
which, after different developments,
became the Ariane code
thanks to a successful collaboration
with Nicolas Grima.
My name is Nicolas Grima
and I work, like Bruno, at the CNRS.
I work in the same laboratory, LOPS.
I work as a research engineer in scientific computing.
So, I provide support for all LOPS scientific projects.
In 2007, I partenered up with Bruno
in order to modernise the Ariane application
so it could be distributed more easily
to all users wanting to perform Lagrangian analyses.
Since then, in collaboration with Bruno,
I have maintained and developped Ariane
to respond to the scientific needs
of our laboratory's projects
but also to make the application available
to the whole international scientific community
so that scientists can perform Lagrangian analyses in their research.
Ariane in figures, a recognised Lagrangian analysis tool
Between 2007 and 2021,
we have received about 600 requests to access
the source code of the application.
With Bruno, we have tallied
10 to 12 scientific publications in tier 1 journals per year
that mentioned using the Ariane application
to achieve the results they reported.
With Bruno we offered
about two tutorial sessions per year
for the users that came to our laboratory:
interns, postgraduate students or confirmed researchers.
Each week we answer emails
from users of the application.
Simple questions about how to install the Ariane application
or more specific questions
about the interpretation of the results of the application.
Why make a video training course on using Ariane?
Through these years, with our many activities,
ranging from science to technology and administration,
we have become more and more busy
and it has become increasingly difficult to answer
easily and accurately all the questions we receive.
This is why we have created this series of videos
which includes a theoretical part and a practical part.
The videos will provide you
with everything you need to know in order to perform
a Lagrangian analysis suited to your scientific needs.
A twofold course on Ariane: theory and practice
So, Nicolas, as agreed,
and as we usually do when the course
is given here, at the LOPS, in Brest,
we have chosen to break the course down
into two large units:
a large technical unit delivered by you,
and I'll start by a contextual unit,
in which I'll introduce the tool's rationale,
its purpose and why we use it today,
given that the most important thing
is that users become familiar with the tool:
and that's where you come in.
In this series, the first part will deal with
the theoretical aspects behind Ariane,
while my part will be about how to take
Ariane's source codes,
how to install and set them up
on one's computer.
Then, we'll see how to write a file,
a key file, as you'll see in the videos,
which is called the 'Namelist' file.
This will allow you to set up
your Lagrangian analysis experiment in Ariane,
to address your scientific question.
We'll also see two modes in the application:
a qualitative mode and a quantitative mode.
We'll look at each of these two modes in detail,
from setting up the application
to performing the experiment
and also interpreting the results,
for the two modes, qualitative and quantitative.
We'll provide examples in each of the videos
in order to fully understand
Ariane's theoretical and practical aspects.
Over to you now...
We hope these videos
will help you find the answers
to the questions you have about the Ariane application
and the Lagrangian analysis you can use it for,
and thus will help you improve the results of your research.
If you happen to come to Brest,
don't hesitate to pay us a visit at the LOPS.
Indeed, to discuss and maybe even work together!
Thank you and see you soon!