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 23 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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Average annual changes in tropospheric nitrogen dioxide, as observed by GOME from 1996 to 2002. The gradient obtained from a linear regression of the annual averages of tropospheric GOME NO2 columns, retrieved close to 1030 local time from 1996 to 2002 is shown. Reductions in nitrogen dioxide are observed over Europe and the central East Coast of the United States, while large increases are evident over China.