THEMATIC AREA
  • Aerosols
  • Afforestation/Reforestation
  • Agricultural Chemicals
  • Agriculture
  • Air Quality
  • Altitude
  • Aquaculture
  • Atmosphere
  • Atmospheric Chemistry
  • Atmospheric Electricity
  • Atmospheric Indicators
  • Atmospheric Pressure
  • Atmospheric Radiation
  • Atmospheric Temperature
  • Atmospheric Water Vapour
  • Atmospheric Winds
  • Bathymetry and Seafloor Topography
  • Biosphere
  • Biospheric Indicators
  • Carbon
  • Climate
  • Clouds
  • Coastal Processes
  • Crops and Yields
  • Cryosphere
  • Cryospheric Indicators
  • Cultural Heritage
  • Diseases and Pests
  • Earth Gases and Liquids
  • Earthquakes
  • Ecological Dynamics
  • Ecosystems
  • Energy and Natural Resources
  • Environmental Governance and Management
  • Environmental Impacts
  • Environmental Vulnerability Index
  • Erosion and Sedimentation
  • Essential Climate Variables
  • Fisheries
  • Food Security
  • Forest Conservation/Protection
  • Forest Fires
  • Forest Management
  • Forest Mensuration/Inventory
  • Forestry
  • Frozen Ground and Permafrost
  • Geochemistry
  • Geodetics
  • Geomagnetism
  • Geomorphic Landforms and Processes
  • Geothermal Dynamics
  • Glaciers and Ice Sheets
  • Gravity and Gravitational Field
  • Groundwater
  • Habitat Conversion and Fragmentation
  • Human Dimensions
  • Human Settlements
  • Infrastructure
  • Invasive Species
  • Ionosphere and Magnetosphere Dynamics
  • Lakes
  • Land Surface
  • Land Surface and Agriculture Indicators
  • Land Use and Land Cover
  • Landscape
  • Mapping and Cartography
  • Marine Environment Monitoring
  • Marine Geophysics
  • Marine Sediments
  • Natural Hazards and Disaster Risk
  • Ocean Chemistry
  • Ocean Circulation
  • Ocean Heat Budget
  • Ocean Indicators
  • Ocean Optics
  • Ocean Temperature
  • Ocean Waves
  • Oceans
  • Organic Matter
  • Paleoclimate Indicators
  • Permafrost
  • Plant Phenology
  • Plate Tectonics
  • Population
  • Precipitation
  • Public Health
  • Reclamation, Revegetation and Restoration
  • Rivers
  • Rocks, Minerals and Crystals
  • Salinity and Density
  • Sea Ice
  • Sea Surface Topography
  • Security
  • Snow and Ice
  • Socioeconomics and Sustainability
  • Soil Classification
  • Soil Erosion
  • Soil Moisture
  • Soil Texture
  • Soils
  • Solar Activity
  • Solar Energetic Particle Flux
  • Solar Energetic Particle Properties
  • Solid Earth
  • Sun-Earth Interaction
  • Sun-Earth Interaction Indicators
  • Surface Radiative Properties
  • Surface Thermal Properties
  • Surface Water
  • Tectonics
  • Terrestrial Hydrosphere
  • Terrestrial Hydrosphere Indicators
  • Tides
  • Topography
  • Vegetation
  • Volcanic Activity
  • Water Quality
  • Water Quality and Water Chemistry
  • Weather Events
  • Wetlands
INSTRUMENT TYPE
INSTRUMENT

Data

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

data description

SeaSat ESA archive

The Seasat ESA archive collection mainly covers Europe during the full life of the mission. The products are available as: - Level-1 SAR Ellipso...

data description

Landsat 7 ETM+ (Enhanced Thematic Mapper Plus) Geolocated Terrain Corrected Systematic processing

This dataset contains all the Landsat 7 Enhanced Thematic Mapper high-quality ortho-rectified L1T dataset (or L1Gt where not enough GCPs are ava...

data description

Landsat 5 TM and 7 ETM+ cloud free European coverage

This European Space Agency Landsat cloud free dataset has been acquired and processed at receiving stations in Fucino (Italy), Matera (Italy), K...

data catalogues

EO CAT

EO CAT is the Next Generation Earth Observation system designed to manage end-user Earth Observation services.

News

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.

general news

Using machine learning for rewilding

Project in the Netherlands uses satellite data to understand how a nature reserve responds to the pressure of being grazed by herbivores.

Read more

operational news

Landsat-8 web portal now available on new environment

The Landsat-8 Portal service has been migrated to a new server and is accessible on the previous web address.

Read more

scientific highlights

Satellite Radar Altimetry: past and future

Satellite radar altimetry measurements yield a wealth of information that can be used for a wide range of applications.

Read more

scientific highlights

Satellite data allows real-time detection of potential fires

A pilot Fire Detection Service, based on real-time processing of Landsat-8 data being assessed within the framework of ESA's Earthnet Programme.

Read more

Missions

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.

Landsat Series
third party missions

Landsat Series

The Landsat series is the world's longest running system of satellites for moderate-resolution optical remote sensing for land, coastal areas and shallow waters.

Read more
SeaSat
third party missions

SeaSat

On board SeaSat was the first-ever space-borne synthetic aperture radar (SAR) system for science applications.

Read more

TOOLS & TOOLBOXES

Find the tools you need to visualise, analyse and process the European Space Agency's Earth observation data.

TOOLS - visualisation

EVDC Orbit Prediction Tool

The EVDC Orbit Prediction and Overpass Tool generates and visualises satellite's overpasses. Read more

ACTIVITIES

Find the activities you need.

ACTIVITY - quality

EDAP

The ESA Earthnet Data Assessment Pilot (EDAP) project will perform assessments for various missions to ensure the delivered data is fit for purpose. Read more

INSTRUMENTS

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.

a-spectrometers-radiometers

Enhanced Thematic Mapper Plus (ETM+)

The Enhanced Thematic Mapper Plus (ETM+) is the main instrument on board Landsat-7.

OTHER RESOURCES

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

DOCUMENT - Technical Note

1 Mar 2019

The SeaSat-A Synthetic Aperture Radar System

The SeaSat-A synthetic aperture radar imaging radar system (SAR) was the first imaging radar system used as a scientific instrument from Earth orbit. The system generated continuous radar imagery with a 100 km swath at a resolution of 25 m from an 800 km altitude orbit. The imagery is a pictorial representation of the radar backscatter of the Earth's surface in a map-like representation. Download