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  • 2020-2023  (15)
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  • 1
    Publication Date: 2022-05-09
    Description: de-climate-change-analysis provides statistical analysis and plotting functions to determine absolute and relative changes in climate variables. It is used by the Digital Earth Climate Change Backend Module as part of the Digital Earth Flood Event Explorer. It is developed at the Helmholtz-Zentrum Hereon (https://www.hereon.de) in collaboration with the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/).
    Type: info:eu-repo/semantics/other
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  • 2
    Publication Date: 2022-05-09
    Description: The Earth System Grid Federation (ESGF) provides access to the largest archive of model climate data world-wide. de-esgf-downloader provides a simple, programmatic interface to access/download the model climate data available in the ESGF archive. It supports parallel downloads of multiple datasets and dataset chunks, as well as caching of already downloaded datasets. It is developed at the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/). Link to Git Repository: https://git.geomar.de/digital-earth/de-climate-change/de-esgf-download
    Type: info:eu-repo/semantics/other
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  • 3
    Publication Date: 2022-05-09
    Description: de-similarity-backend-module wraps the floodsimilarity library and exposes it's functions to compute the similarity between multiple flood events via the DASF RPC messaging protocol. It is used by the Flood Similarity Workflow as part of the Digital Earth Flood Event Explorer. The de-similarity-backend-module is developed at the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/). The documentation for the functions and structures provided by the floodsimilarity library are available here: https://digital-earth.pages.geomar.de/floodsimilarity/
    Type: info:eu-repo/semantics/other
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  • 4
    Publication Date: 2022-05-09
    Description: de-smart-monitoring-backend-module provides geo-data acquisition and processing functions, exposed through the DASF RPC messaging protocol. It is used by the Smart Monitoring Workflow (Tocap) as part of the Digital Earth Flood Event Explorer. It is developed at the Helmholtz Centre for Environmental Research - UFZ Leipzig (https://www.ufz.de) in collaboration with the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/). The module contains three major submodules: data acquisition submodule provided through downloader.py data processing submodule provided through rasterprocessing.py routing submodule provided through rasterrouter.py Detailed submodule descriptions can be found in the git repository readme.
    Type: info:eu-repo/semantics/other
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  • 5
    Publication Date: 2022-05-09
    Description: The Digital Earth Controls and Indicators for Flood Impacts Backend Module cifi provides functions to access flood event data and identify relevant controls and useful indicators for the assessment of flood impacts (CIFI). This module contains a data acquisition pipeline to scrape available resources from the Copernicus Emergency Management Service (EMS) website and upload them to a workspace on a configured geoserver instance. The functions are exposed via the DASF RPC messaging protocol. It is used by the Socio-Economic Flood Impacts Workflow as part of the Digital Earth Flood Event Explorer. cifi is developed at the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/).
    Type: info:eu-repo/semantics/other
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  • 6
    Publication Date: 2022-05-09
    Description: de-change-backend-module wraps the de-climate-change-analysis library and exposes it's statistical analysis and plotting functions to determine absolute and relative changes in climate variables via the DASF RPC messaging protocol. It is used by the Climate Change Workflow as part of the Digital Earth Flood Event Explorer. It is developed at the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de) in collaboration with the Helmholtz-Zentrum Hereon (https://www.hereon.de) and funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/).
    Type: info:eu-repo/semantics/other
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  • 7
    Publication Date: 2022-12-05
    Description: We present SEVA, a scalable exploration tool that supports users in detecting land-use changes in large optical remote sensing data. SEVA addresses three current scientific and technological challenges of detecting changes in large data sets: a) the automated extraction of relevant changes from many high-resolution optical satellite observations, b) the exploration of spatial and temporal dynamics of the extracted changes, c) interpretation of the extracted changes. To address these challenges, we developed a distributed change detection pipeline. The change detection pipeline consists of a data browser, extraction, error analysis, and interactive exploration component. The data browser supports users to assess the spatial and temporal distribution of available Sentinel-2 images for a region of interest. The extraction component extracts changes from Sentinel-2 images using the post-classification change detection (PCCD) method. The error assessment component supports users in interpreting the relevance of extracted changes with global and local error metrics. The interactive exploration component supports users in investigating the spatial and temporal dynamics of extracted changes. SEVA supports users through interactive visualization in all components of the change detection pipeline.
    Type: info:eu-repo/semantics/conferenceObject
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  • 8
    Publication Date: 2022-12-05
    Description: Floods can have devastating consequences on people, infrastructure, and the ecosystem. Satellite imagery has proven to be an efficient instrument in supporting disaster management authorities during flood events. In contrast to optical remote sensing technology, Synthetic Aperture Radar (SAR) can penetrate clouds, and authorities can use SAR images even during cloudy circumstances. A challenge with SAR is the accurate classification and segmentation of flooded areas from SAR imagery. Recent advancements in deep learning algorithms have demonstrated the potential of deep learning for image segmentation demonstrated. Our research adopted deep learning algorithms to classify and segment flooded areas in SAR imagery. We used UNet and Feature Pyramid Network (FPN), both based on EfficientNet-B7 implementation, to detect flooded areas in SAR imaginary of Nebraska, North Alabama, Bangladesh, Red River North, and Florence. We evaluated both deep learning methods' predictive accuracy and will present the evaluation results at the conference. In the next step of our research, we develop an XAI toolbox to support the interpretation of detected flooded areas and algorithmic decisions of the deep learning methods through interactive visualizations.
    Type: info:eu-repo/semantics/conferenceObject
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  • 9
    Publication Date: 2022-12-05
    Description: The success of scientific projects increasingly depends on using data analysis tools and data in distributed IT infrastructures. Scientists need to use appropriate data analysis tools and data, extract patterns from data using appropriate computational resources, and interpret the extracted patterns. Data analysis tools and data reside on different machines because the volume of the data often demands specific resources for their storage and processing, and data analysis tools usually require specific computational resources and run-time environments. The data analytics software framework DASF, which we develop in Digital Earth (Bouwer et al. (2022)), provides a framework for scientists to conduct data analysis in distributed environments.
    Language: English
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 10
    Publication Date: 2022-01-28
    Description: DASF: Progress API is part of the Data Analytics Software Framework (DASF, https://git.geomar.de/digital-earth/dasf), developed at the GFZ German Research Centre for Geosciences (https://www.gfz-potsdam.de). It is funded by the Initiative and Networking Fund of the Helmholtz Association through the Digital Earth project (https://www.digitalearth-hgf.de/). DASF: Progress API provides a light-weight tree-based structure to be sent via the DASF RPC messaging protocol. It's generic design supports deterministic as well as non-deterministic progress reports. While DASF: Messaging Python provides the necessary implementation to distribute the progress reports from the reporting backend modules, DASF: Web includes ready to use components to visualize the reported progress.
    Language: English
    Type: info:eu-repo/semantics/other
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