The CyberGISX platform supports data-intensive, reproducible, and scalable geospatial analytics, modeling, and simulation. The platform integrates cyberGIS capabilities with Jupyter Notebook to accelerate cyberGIS application development while encapsulating associated data, analytics, and workflows into application packages that can be reproduced through cutting-edge high-performance, data-intensive and cloud computing approaches.
The CyberGIS-Jupyter for Water (CJW) platform aims to advance community hydrologic modeling, and support data-intensive, reproducible, and computationally scalable water science research by simplifying access to advanced cyberGIS and cyberinfrastructure capabilities through a friendly Jupyter Notebook environment. The platform allows models such as Structure For Unifying Multiple Modeling Alternatives (SUMMA) andWRFHydro to access high-performance computing resources through the CyberGIS Computing Service. CJW has been seamlessly integrated with the HydroShare ecosystem to enable easy access and use by the Hydrology community.
RMMS is a web-based geographic information system (GIS) that makes it easy for the general public, organizations, and decision-makers to obtain environmental information specifically as it relates to watershed management for state and federal programs. Power users such as those from the Illinois Environmental Protection Agency (IEPA) can submit and update data while normal users can examine and interactively map data, perform queries by data type and region, and export both raw data and customized maps.
The WhereCOVID-19 platform maps and predicts where COVID-19 spreads across a number of spatial and temporal scales while providing an online spatial decision support system for identifying populations at risk and targeting health care interventions. The platform, developed collaboratively with epidemiology researchers and public health officials, provides a one-stop geospatial data and analysis system to support cutting-edge research and timely decision-making.
Source code: https://github.com/cybergis/wherecovid19_webapp
OpenCLC is an open-source software tool to automatically identify matching and mismatching line features between two sets of hydrographic flowlines. Aside from identifying differences among the two versions of NHD lines, results can be applied to improve the quality of NHD HR content. OpenCLC significantly outperforms the best available commercial off-the-shelf software in computational scalability, and it is made widely available as part of the CyberGIS Toolkit to benefit broad environmental and geospatial science communities.
Source code: https://github.com/cybergis/CyberGIS-Vis
Drainage network analysis is fundamental to understanding the characteristics of surface hydrology. Based on elevation data, drainage network analysis is often used to extract key hydrological features like drainage networks and streamlines. Limited by raster-based data models, conventional drainage network algorithms typically allow water to flow in 4 or 8 directions (surrounding grids) from a raster grid. To resolve this limitation, this paper describes a new vector-based method for drainage network analysis that allows water to flow in any direction around each location. The method is enabled by rapid advances in Light Detection and Ranging (LiDAR) remote sensing and high-performance computing. The drainage network analysis is conducted using a high-density point cloud instead of Digital Elevation Models (DEMs) at coarse resolutions. Our computational experiments show that the vector-based method can better capture water flows without limiting the number of directions due to imprecise DEMs. Our case study applies the method to Rowan County watershed, North Carolina in the US. After comparing the drainage networks and streamlines detected with corresponding reference data from US Geological Survey generated from the Geonet software, we find that the new method performs well in capturing the characteristics of water flows on landscape surfaces in order to form an accurate drainage network.