Show results for:


Discover and download the Earth observation data you need from the broad catalogue of missions the European Space Agency operate and support.

data description

ERS-2 GOME Spectral Product L1

leakage current and stray light). Such calibrations are now applied to the version 5.1 L1b data product in the standard processing. Use...

data description

ERS-1/2 ATSR Averaged Surface Temperature [AT1/AT2_AR__2P]

The Averaged Surface Temperature Product (AST) contains averaged geophysical data at two different resolutions, and with respect to two differen...


Discover the latest news on the European Space Agency's Earth Observation activities. Learn all about new data availability and how ESA's missions are performing.

announcement of opportunity

Announcement of Opportunity for Aeolus Cal/Val

The objective of the current reopening is to invite scientists, new groups and individuals, to participate in Aeolus calibration and va...

Read more

general news

CRYO2ICE is now on Earth Online

On 16 July, ESA is kicking off the CRYO2ICE campaign that will raise the orbit of its CryoSat-2 satellite to periodically align with NASA’s ICESat-2.

Read more

operational news

Aeolus activates new range bin setting

countering the expected downward propagation of the current easterly QBO phase. To capture this unusual feature and track its evolution...

Read more

general news

Aeolus data now publicly available

June 2019 of a correction of biases related to spectrometer pixels showing elevated dark current levels, the telescope mirror temperatur...

Read more

scientific highlights

Gravity Field Models from Swarm data

In addition to its geomagnetic objectives, GPS receivers onboard Swarm can and have already been exploited to measure temporal variations in Earth's global gravity field.

Read more

general news

ALOS PALSAR WB1 Collection now available online

Area Observation Mode (Burst Mode 1) collection, which will complete the existing ALOS PALSAR data offer.

Read more


Explore the European Space Agency's Earth Observation satellite missions. Learn all about ESA's dedicated Earth Explorers or collaborations with other agencies through the Third Party Missions programme.

earth explorers


Fill the current major gap in the atmospheric observing system Understand climate change Help to track air pollution Track desert dust, ...

Read more
third party missions


PROBA-1 is a technology demonstration satellite that later became an operational Earth observation mission.

Read more


Learn about upcoming Earth observation conferences, workshops and training courses that the European Space Agency organise or support. Discover the results of past events, which may provide useful reference or material for your work.

EVENT - workshop

IDEAS+ Cal/Val Workshop 7

Regular workshops are held every nine months with the whole IDEAS+ Task 3-Cal/Val team in order to review the status of current activit...

Read more


Find the activities you need.

ACTIVITY - instrument characterisation and algorithm studies

ESA satellites and instruments calibration landing page

ESA satellites and instruments calibration landing page Read more


Explore the many instruments the European Space Agency use to observe the Earth. ESA offer data from a wide range of optical, radar, atmospheric, altimetric and gravimetric instrumentation.



MIPAS was an atmospheric instrument carried aboard the Envisat satellite.



The MERIS instrument aboard Envisat was primarily dedicated to providing ocean colour measurements.



Dark current at 20C 1



dark current and LED measurements (pixel-to-pixel gain)


Browse through mission documentation and reports, and learn more about European Space Agency Earth Observation projects and opportunities.

DOCUMENT - Technical Note

3 Mar 2020


contact with the satellite was lost in April 2012. The current official ozone product is based on the SDOAS algorithm; see [Lerot et al., 2009]. The GOME2 instrument was launched successfully in Download