Managing and publishing research data is part of good research conduct. Research funders also require data to be made openly available with as few restrictions as possible. Newcastle University's RDM team have pulled together an informative toolkit giving advice on the data lifecycle. Check it out here: research.ncl.ac.uk/rdm/
Natural Environment Research Council (NERC) has a network of environmental data centres which hold data from environmental scientists working in the UK and around the world. The data centres are responsible for maintaining environmental data and making them available to all users, from science, commerce, government and education as well as the general public.