Saturday, February 8 2025

Data Processing . Earth Echoes

Cyclone Chido: Sentinel-1 Captures the Storm’s fury

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Cyclone Chido, a powerful tropical storm, swept across Mayotte, leaving a significant impact on the affected regions. Using Sentinel-1 radar data, we analyzed its structure and dynamics through high-resolution imagery and wind field data. On 2024-12-13, Sentinel-1 captured this striking image of Cyclone Chido, showcasing its spiraling rain bands and calm eye. The radar’s ability

Land Surface Temperature

“Land Surface Temperature (LST) is the radiative skin temperature of the land derived from solar radiation. It is a basic determinant of the terrestrial thermal behaviour, as it controls the effective radiating temperature of the Earth’s surface” [1]. LST is linked to several aspects of the geoscience and in this respect the understanding of its

Formaldehyde

Formaldehyde is an organic compound widely used in many industrial applications, such as the manufacturing of resins, production of disinfectants and biocides or like a tissue fixative. It is present in our atmosphere as a gas and its distribution in the air is not only linked to man-made sources (combustion of fuel, traffic, emission from

The Ozone Hole

All life on Earth depends on the existence of a thin shield of a poisonous gas high in the atmosphere: the ozone layer. (Ozone Secretariat, UNEP, “Action on Ozone”) The ozone layer is a region of our atmosphere widely known for absorbing a large part of the direct dangerous ultraviolet radiation coming from the Sun. Indeed

Nitrogen Dioxide Pollution

Nitrogen Dioxide is one of the atmospheric gas species retrieved from the data acquired by Sentinel-5P multispectral imaging spectrometer: TROPOMI. Sentinel-5P is the umpteenth spacecraft belonging the the Sentinels constellations and conceived in the framework of the Copernicus Programme. The main goal of this mission is to perform atmospheric measurements with high spatio-temporal resolution, to be used

( 16°49′S 151°27′W ) Raiatea and Taha’a

This Copernicus Sentinel-1 image acquired on February 2019 takes us over Raiatea and Taha’a  islands located among the western group, the Leeward Islands, of the Society Islands in French Polynesia, an overseas territory of France in the Pacific Ocean. Raiatea, is the second largest of the Society Islands, after Tahiti, in French Polynesia, and its  meaning “faraway heaven” and “sky with soft light,”  is considered

Mappamondo: Copernicus Natural Color World

Since we started to publish Sentinel-3 Level 2 world maps via our EO browser we took the challenge to process a land worldwide cloud free image of the Earth with an RGB natural colour composition. Indeed with a proper tailoring of our processors in order to handle the instruments radiances and cloud masks, using several months

Time Series of Sentinel-3 Data

One of the mission needs of Sentinel-3 constellation is directly related to the evaluation of climate change effects on Earth. Indeed the spacecrafts and their payloads haven’t been designed to identify small objects on the ground but to revisit the same region with high frequency. In this respect we have created four different animations in

Sentinel-2 captures the disaster after Sulawesi earthquake in Indonesia

An earthquake of magnitude 7.3 (Richter scale) was recorded at 18.02 local time in the waters of Indonesia, off the island of Sulawesi, last Friday 28 September 2018. According to data from the Italian Institute of Geophysics and Volcanology (Ingv) the earthquake had hypocentre at about 20 km of depth. The earthquake triggered a tsunami

(23°31′5″S 68°18′42″W) Salar de Atacama

The image represent the a salt flat, or playa, named Salar de Atacama captured with SAR of the Copernicus Sentinel-1. Chile’s Atacama Desert may be the driest place on Earth it is the world’s third largest salt flat (about 3000 sq km) as well as one of the largest active sources of lithium. Some areas of the

Oceans Mapping with Sentinel-3

Our third step in the framework of World health monitoring and evaluation of climate changes effects on Earth stands on oceans and seas mapping. Copernicus Sentinel-3 mission, as already described for land products, systematically delivers to the community a large dataset of marine products, namely geophysical data extremely useful for the monitoring purposes we described

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