  In this lengthy letter, we wanted to discuss the concept of climate based on
definitions established for over a century and direct observations that we have
been collecting for more than a century as well. To do this, we present and
discuss the remarkably stable maps over time of the various physical parameters
that make up the climate corpus: solar temperature, atmospheric pressure,
winds, precipitation, temperature anomalies. This impressionistic tableau that
we are gradually sketching as our reflection unfolds leads us to the following
proposition: What if, as Laplace first proposed in 1799 and later
Milankovi\{'}c in 1920, ground temperature were merely a consequence of climate
and not a separate parameter of climate in its own right?
