Alexandre Cauquoin, PhD
My name is Alexandre Cauquoin. I study the past changes of Earth climate by using isotopic species like water stable isotopes (H216O, H218O and HDO), tritium or beryllium-10 under a model-data approach. I am specialised in the implementation and modelling of these isotopic species in General Circulation Models (GCM), which allow to better understand the interactions between the different compartments of our climate system and to make projections of future climates for IPCC reports. I have also experience in the extraction and measurements of these isotopic species in polar ice cores.
I have worked recently on the implementation of water stable isotopes in the German fully coupled model MPI-ESM for paleoclimate studies. I have also been able to add the tritium in the French atmospheric GCM LMDZ, especially to work on the origin of water masses (stratosphere, troposphere...) that arrive over Antarctica. For beryllium-10, I measured and analysed its concentration in the EPICA Dome C ice core for linking polar and ocean climate variations over great climatic transitions. I work now at the Institute of Industrial Science, at the University of Tokyo, for implementing the water stable isotopes in the Japanese coupled model MIROC.