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Guillaume Paris

Guillaume Paris

Géochimiste, chargé de recherche CNRS au Centre de recherches pétrographiques et géochimiques de Nancy, Université de Lorraine
Je suis géochimiste isotopique et je travaille au Centre de recherches pétrographiques et géochimiques de Nancy, une unité mixte de recherche CNRS-université de Lorraine.

Comprendre l'environnement sur Terre aujourd'hui et demain implique de savoir ce qui l'a marqué au cours de son histoire. Comment et quand l'oxygène est-il apparu dans l'atmosphère ? Quels sont les paramètres de contrôle du taux de CO2 atmosphérique ? Comment la Terre réagit à une perturbation brutale ? Comment en est-on arrivés aux conditions atmosphériques actuelles ? Comment l'être humain modifie-t-il son environnement ?

Je travaille sur l'évolution de l'environnement sur Terre au cours des temps géologiques. Ce qui m'intéresse particulièrement est de comprendre comment les interactions entre l'activité biologique et les contraintes géologiques contrôlent la composition du système océan-atmosphère, ces cycles biogéochimiques ayant façonné le système océan-atmosphère de la Terre au cours de son Histoire.

J'utilise en particulier l'outil isotopique pour étudier ces cycles et aborder un certain nombres de questions.

Why is there water on Earth?

Feb 12, 2021 07:58 am UTC| Nature Science

Water is essential to life as we know it and it seems completely normal to have water all around us. Yet Earth is the only known planet to be covered by oceans. Do we know exactly where its water came from? This is not...

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Nvidia-backed artificial intelligence startup Reflection AI is in advanced discussions to secure $2.5 billion in fresh funding, with negotiations pointing to a staggering pre-money valuation of $25 billion, according to a...
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