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SUMMARY:Open-Earth-Monitor Science Webinar - June 5th 2025
DESCRIPTION:Join us for the latest edition of the OEMC Science Webinars! Thursday March 14th\, 2-3 PM (CET) on Zoom\nThe Open-Earth-Monitor project is pleased to invite you to the 12th edition of the Science Webinars\, our monthly discussions on topics related to earth observation and environmental monitoring\, hosted on the first Thursday of each month. \nFollow this link to register to the Zoom webinar and attend freely! \n_______________________________________________________________________________________________________ \nDiscrete Global Grid Systems: Towards Less Distorted Geospatial Data \nSatellite imagery is traditionally stored and processed on rectangular grids. However\, the widespread usage of such grids has normalized their inherent distortions\, particularly near the poles. Previous attempts to address this issue\, such as employing multiple local projections like the UTM-based Sentinel 2 L1C grid\, have led to inefficiencies\, including a significant increase in data volume (~30%) due to overlaps that need to be stored\, downloaded\, and processed. Additionally\, there is a lack of a unified global indexing system and the choice of pixel cell shape\, which further complicate the analysis. In this talk\, we advocate for a paradigm shift towards Discrete Global Grid Systems (DGGS) to mitigate these challenges. DGGS tessellate the Earth’s surface with hierarchical cells of equal area\, minimizing distortion and reducing loading time of large geospatial datasets. This approach would greatly improve spatial statistics and convolutional Machine Learning models\, where accurate representation of global phenomena is paramount at a global scale. In particular\, we present the Julia package DGGS.jl to work with DGGS native raster data cubes \n_______________________________________________________________________________________________________ \n=> Stay in touch! Subscribe to our mailing list.
URL:https://earthmonitor.org/events/open-earth-monitor-science-webinar-june-5th-2025/
LOCATION:Online
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