esa


GIS Data

Average sea-surface topography for 2013 as mapped by CryoSat combined with data from the ERS-2, Envisat, GFO, Topex/Poseidon and Jason missions. Red represents higher sea levels (up to 20 mm) while blue represents lower areas (down to –20 mm). CryoSat’s ground-tracks are seen as long ‘strips’. It can be seen that CryoSat reaches higher latitudes compared to previous radar altimeter missions, and can capture a high-degree of mesoscale activity in the Gulf Stream. Source: ESA/CNES/CLS

Download CryoSat-2 Ice and Ocean Data Products

The polar-orbiting CryoSat-2 satellite provides researchers with a ice and ocean data that is helping to understanding the current state of the world’s ice sheets and oceans.   Since its launch in 2010, CryoSat-2 has collected data that provides scientists with an understanding of changes in the thickness of polar sea ice, […]

GIS Data

Artist rendering of the Proba-V satellite. Credit: ESA–P. Carril, 2012.

This Day in GIS: May 7 – Launch of Proba-V Satellite

Proba-V, the miniature satellite was launched on May 7, 2013 from French Guiana.  The “V” in the name stands for vegetation as Proba-V’s role is to capture imagery about the world’s vegetation to be used, for example, for day-by-day tracking of extreme weather, alerting authorities to crop failures, monitoring inland water […]

GIS Data

Acquired on 13 April 2014 at 23:57 GMT (14 April at 01:57 CEST) by Sentinel-1A, this image shows a transect over the northern part of the Antarctica Peninsula. It was acquired in the satellite’s ‘strip map’ mode with a swath width of 80 km and in dual polarisation. The colours indicate how the land, ice and water reflect the radar signal differently. Source: ESA.

First Satellite Images from Sentinel-1A

Launched on April 3 and reaching operational altitude on April 11, the first images captured by the European Space Agency’s (ESA) Sentinel-1A satellite have been made public. The first of five satellites planned for the Sentinel group, Sentintel-1A will be tasked with gathering all-weather, day and night radar images.  Imagery […]

GIS Data

Free and Open Access to Sentinel Satellite Data

Free and Open Access to Sentinel Satellite Data

The European Space Agency (ESA) has announced that free and open access to Sentinel satellite data will become available during the Copernicus operational phase.  Copernicus is an earth observation program operated by a partnership of  the European Commission (EC), European Space Agency (ESA), and the European Environment Agency (EEA).    The […]

Spatial Analysis

GOCE geoid model. Source: ESA.

GOCE Gravity Mapping Mission Has Ended

Launched on March 17, 2009 by the European Space Agency (ESA), the low altitude satellite GOCE is set to run out of fuel around October of this year. GOCE, which stands The Gravity field and steady-state Ocean Circulation Explorer was launched with the purpose of mapping the Earth’s gravity field at a high level of detail.

GIS Data

Landsat 5 image of Lisbon, Portugal acquired on August 14, 2004.

Thirty Years of Landsat Data Now Available From the ESA

A couple of years ago, the European Space Agency (ESA) made its thirty year archive of Landsat imagery available to the public.  At the time, users needed to submit a request via the Earth Observation Principal Investigator Portal and wait for approval.  Now users can directly download a variety of Landsat satellite […]

Spatial Analysis

Example of wide-area mapping of terrain deformations over mainland Greece. This GPS-calibrated deformation map covers 65 000 sq km – approximately half of the country’s territory. This map was created using 10 individual ERS-1/2 stacks, each stack being a time series of 58 to 76 SAR images acquired from 1992 to 2003 for a total of 671 images. Source: ESA.

Using Remote Sensing to Measure Land Deformation

The European Space Agency has developed a new land data processor to create maps of land deformation.  Called Wide Area Processor (WAP), the processes uses radar data to measure millimeter terrain deformations.  Changes in the surface height of a landscape occur over time.  Sinking of the earth can happen as a result of mining, […]