Characterisation of the hydrospheres of TRAPPIST-1 planets Lorena Acuña, Magali Deleuil, Olivier Mousis, Emmanuel Marcq, Maëva Levesque and Artyom Aguichine A&A, 647 (2021) A53 Published online: 09 March 2021 DOI: 10.1051/0004-6361/202039885