The humid and moist tropical climate of Gabon yields immense forests that cover over 85% of the land, making them the number-two driver of the national economy – and deforestation a subject of concern.
Sentinel-2 will provide systematic global acquisitions of high-resolution multispectral imagery for Europe's Global Monitoring for Environment and Security (GMES) programme.
Credits: Astrium GmbH
The GMES project on Forest Monitoring Reducing Emissions from Deforestation and Degradation mapped deforestation in Gabon from 1990 to 2010 using NASA’s Landsat satellite.
But the Equatorial African country’s heavy cloud cover means that imagery is often difficult to acquire over some areas.
While it takes Landsat 1.5–3.5 years to obtain imagery of the entire country, the future Sentinel-2 mission would require less than a year because of its more frequent coverage.The future monitoring of land cover by Sentinel-2 was just one of the many topics covered at the Sentinel-2 Preparatory Symposium, hosted this week at ESA’s ESRIN centre for Earth observation in Frascati, Italy.
“Sentinel-2 will fill the gap from both a research and operations perspective,” said Chris Steenmans, Head of Programme at the European Environment Agency’s Shared Environmental Information System.
“We are currently struggling with fragmented satellite data, so the timely information that Sentinel-2 will provide is important. The mission will also complement other Earth observation investments on a global level.”
Sentinel-2, planned for launch next year, is one of five Sentinel missions that ESA is developing for Europe’s Global Monitoring for Environment and Security (GMES) programme.
Through GMES, decision-makers will have access to reliable, timely and accurate information services to manage the environment, understand and mitigate the effects of climate change and ensure civil security.At the recent symposium, Medhavy Thankappan, Director of Science and Strategy at Geoscience Australia’s National Earth Observation Group, presented a national land cover dataset based on analysis of satellite data acquired over an eight-year period.
“The next step is to update the land cover information with new data from a consistent source – to move from mapping to monitoring,” said Mr Thankappan.
“We would also like to move to a higher spatial resolution – that’s where Sentinel-2 comes in.”
Owing to its high resolution of 10 m per pixel, and wide swath of 290 km, global products from Sentinel-2 will be able to be applied locally.
The mission will adhere to the Sentinel Data Policy, which establishes full and open access to data acquired by all five of the upcoming Sentinels.
Participants at the symposium, however, expressed concern over the data delivery arrangement.
“Sentinel-2 is like a dream come true for the forest remote sensing community,” said Tuomas Häme, Research Professor at the VTT Technical Research Centre of Finland.
“It is of utmost importance that the mission can be fully utilised by organising data delivery to the users as smoothly as it is organised for the similar missions with a free and open data policy.”
Robert Meisner | EurekAlert!
New AI system manages road infrastructure via Google Street View
19.06.2019 | RMIT University
'Alexa, monitor my heart': Researchers develop first contactless cardiac arrest AI system for smart speakers
19.06.2019 | University of Washington
From June 25th to 27th 2019, the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau (Germany) will be presenting a new solution for acoustic quality inspection allowing contact-free, non-destructive testing of manufactured parts and components. The method which has reached Technology Readiness Level 6 already, is currently being successfully tested in practical use together with a number of industrial partners.
Reducing machine downtime, manufacturing defects, and excessive scrap
The quality of additively manufactured components depends not only on the manufacturing process, but also on the inline process control. The process control ensures a reliable coating process because it detects deviations from the target geometry immediately. At LASER World of PHOTONICS 2019, the Fraunhofer Institute for Laser Technology ILT will be demonstrating how well bi-directional sensor technology can already be used for Laser Material Deposition (LMD) in combination with commercial optics at booth A2.431.
Fraunhofer ILT has been developing optical sensor technology specifically for production measurement technology for around 10 years. In particular, its »bd-1«...
The well-known representation of chemical elements is just one example of how objects can be arranged and classified
The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...
Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.
Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...
Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.
The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...
24.06.2019 | Event News
29.04.2019 | Event News
17.04.2019 | Event News
24.06.2019 | Event News
24.06.2019 | Agricultural and Forestry Science
24.06.2019 | Life Sciences