The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 22 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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Piecing together salinity data from SMOS with satellite sea-surface temperature measurements and additional auxiliary data, it is possible to work out the pH of seawater and therefore provide accurate information to help address the growing problem of ocean acidification. This map shows the first estimates of surface ocean pH using this new approach to fusing different data, which will further help ocean biologists and climatologists study the world's oceans.