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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Left: Total column ozone in DU on 11 Sep 2004 from the operational ECMWF analysis (top),
from an analysis experiment assimilating SCIAMACHY total ozone products from KNMI (middle) and from gridded
daily TOMS data (bottom). Right: The two top panels show the zonal mean ozone values from the experiments
(solid lines) and from TOMS data (open circles), the bottom panel shows the relative difference in % between
the analysis using SCIAMACHY and TOMS (taken here as reference). Improvement due to the use of SCIAMACHY is
noticeable, especially over the South Pole.