“The paradigm of Open Science is based on the tiers Open Access, Open Data and Free Open Source Software (FOSS). However, the interconnections between the tiers remain to be improved. This is a critical factor to enable Open Science. This Townhall meeting reaches out all across EGU, espescially welcoming Early Career Scientists, to network and discuss the current challenges and opportunities…”
“With the FOSS4G EO Data Challenge, we are challenging startups, developers, students and researchers to come up with useful, valuable or interesting open source applications using large volumes of EO data (and their evolution in time) and state-of-the art technologies (AI/ML, HMC, STAC, data cube, COG). Linking of EO data with other sources of open data (e.g. OpenStreetMap, Copernicus Services – Land, Atmosphere, Climate) is highly encouraged. Our voluntary mentors will guide the process to mature and demonstrate your ideas….”
Abstract: Technological progress in remote sensing has enabled digital representation of terrain through new techniques (e.g. digital photogrammetry) and instruments (e.g. 3D laser scanners). However, the use of old aerial images remains important in geosciences to reconstruct past landforms and detect long-term topographic changes. Administrations have recently expressed growing interest in sharing photogrammetric datasets on public repositories, providing opportunities to exploit these resources and detect natural and anthropogenic topographic changes. The SfM-MVS photogrammetric technique was applied to scanned historical black and white aerial photos of the Serra de Fontcalent (Alicante, Spain), as well as to recent high-quality digital aerial photos. Ground control points (GCPs) extracted from a LiDAR-derived three-dimensional point cloud were used to georeference the results with non-linear deformations. Two point clouds obtained with SfM-MVS were compared with the LiDAR-derived reference point cloud. Based on the result, the quality of the models was analysed through the comparison of the stages on stable areas, i.e., lands where no variations were detected, and active areas, with quarries, new infrastructures, fillings, excavations or new buildings. This study also indicates that errors are higher for old aerial photos (up to 5?m on average) than recent digital photos (up to 0.5?m). The application of SfM-MVS to open access data generated 3D models that enhance the geomorphological analysis, compared to stereophotogrammetry, and effectively detected activities in quarries and building of landfills.
“A “historical Google Earth” featuring aerial photographs of Britain going back to 1945 has been made freely available by Cambridge University.
The vast archive captures 70 years of change across urban and rural landscapes, from the bomb-scarred postwar period to the emergence of motorways and skyscrapers.
The aerial photographs, showing Britain from the air from the 1940s up to 2009, were taken by former wartime RAF pilots at the instruction of the Cambridge archaeologist Kenneth St Joseph.
The first 1,500 photographs, covering almost every corner of the UK, were published on Friday, the first batch from an archive of almost 500,000….”
“If you’ve lived through a major, natural disaster, you know that during the first few days you’ll probably have to rely on a mental map, instead of using a smartphone as an extension of your brain. Where’s the closest hospital with disaster care? What about shelters? Gas stations? And how many soft story buildings—with their propensity to collapse—will you have to zig-zag around to get there?
Trying to answer these questions after moving back to earthquake-prone San Francisco is why I started the Resiliency Maps project. The idea is to store information about assets, resources, and hazards in a given geographical area in a map that you can download and print out. The project contributes to and is powered by OpenStreetMap (OSM), and the project’s entire toolkit is open source, ensuring that the maps will be available to anyone who wants to use them….”
“The Open Data Cube (ODC) is an Open Source Geospatial Data Management and Analysis Software project that helps you harness the power of Satellite data. At its core, the ODC is a set of Python libraries and PostgreSQL database that helps you work with geospatial raster data….
?The ODC seeks to increase the value and impact of global Earth observation satellite data by providing an open and freely accessible exploitation architecture. The ODC project seeks to foster a community to develop, sustain, and grow the technology and the breadth and depth of its applications for societal benefit….”
“For over five decades of manned spaceflight missions, NASA astronauts have taken extraordinary photographs of Earth’s surface and dynamic processes. Humans on board the International Space Station (ISS) have a unique platform to perform Earth observations at various viewing angles, seasons, and times of day. Astronaut photos taken from the ISS comprise a true?color (RGB) dataset taken with multiple handheld digital cameras and lens types (prior to 2004, film cameras were in use). Earth observations through astronaut photography are an important and unique remote sensing method when monitoring natural disasters, urban growth, and environmental changes. While astronaut imagery can be used for earth science research, there is also an artistic aspect to the photography that fascinates a wide global population. A broader public audience can be introduced to earth science through high resolution, Earth art photos taken from the perspective of an astronaut. The Crew Earth Observations (CEO) Facility within the Earth Science and Remote Sensing Unit at NASA’s Johnson Space Center supports the acquisition, analysis, and curation of astronaut photography of Earth’s surface and atmosphere. CEO’s website, the Gateway to Astronaut Photography of Earth (eol.jsc.nasa.gov), provides free public access to view, search, and download over three million images taken by astronauts throughout all of NASA’s crewed spaceflight history, with an emphasis on current ISS imagery. The CEO Facility actively curates a digital collection of exceptional Earth art astronaut photos used for public engagement. Our new Downloadable Earth Art page focuses on broad earth science topics including: mountains, water, clouds, agriculture, as well as an “abstract” category. This continuously?updated collection is comprised of freely accessible and high?quality downloadable materials, such as single? and dual?screen digital wallpapers. All Earth Art materials are presented with science?based information that complements the artistic qualities of the imagery, and facilitate connections between general audiences and earth science from the International Space Station.”
“Earth and space sciences data are a world heritage. Properly documented, credited, and preserved, they will help future scientists understand the Earth, planetary, and heliophysics systems. They should be preserved long-term for future use. They should be made openly available to the scientific community and the public as soon as possible. They should be accessible in usable formats with sufficient machine-readable documentation to allow informed re-use. These responsibilities are an integral part of scientific research shared by individual scientists, data stewards, research institutions, and funding organizations….
Statement adopted by the American Geophysical Union 29 May 1997? Reaffirmed May 2001, May 2005, May 2006? Revised and Reaffirmed May 2009, February 2012, September 2015.”