Paper/Poster/Presentation Title

Hydrologic Micro Services

Keywords

Environmental Modeling, Hydrological Microservices, Hydrologic Modeling, Web Service, Water Quality Modeling

Start Date

26-6-2018 3:40 PM

End Date

26-6-2018 5:00 PM

Abstract

United States Environmental Protection Agency (EPA) has developed a collection of micro services called Hydrologic Micro Services (HMS) for building hydrologic and water quality modeling workflows. HMS components are available as RESTful web services as well as desktop libraries. An HMS component may have multiple implementations addressing varying levels of underlying physical process details and assumptions. HMS components can be used in desktop and web-based workflows. A workflow can call into a specific implementation of an HMS component depending upon the details suitable for the problem statement being addressed by the workflow. Building a workflow from HMS components enables modelers to address hydrologic and water quality problem statements more precisely, in contrast to the current state of modeling where using existing models forces modelers into a potentially sub-optimal workflow. Model selection to address a problem statement has several drawbacks: the selected model may not have the appropriate level of complexity, the model may not address all parts of the problem statement without making less desirable assumptions, or the model may have more features and requirements than necessary. HMS components include data provisioning and simulation algorithms for water quantity and quality modeling. Workflows built using HMS components can in turn be used as components in larger workflows. For example, precipitation data provisioning components can download data from various data sources such as NLDAS, GLDAS, DAYMET, NCDC, PRISM, and WGEN. A simple workflow was developed as an HMS component to compare precipitation data from different sources. Comparison is performed using multiple rainfall statistics.

Stream and Session

A4: Model Integration Frameworks: A Discussion of Typologies, Standards, Languages, and Platforms

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Jun 26th, 3:40 PM Jun 26th, 5:00 PM

Hydrologic Micro Services

United States Environmental Protection Agency (EPA) has developed a collection of micro services called Hydrologic Micro Services (HMS) for building hydrologic and water quality modeling workflows. HMS components are available as RESTful web services as well as desktop libraries. An HMS component may have multiple implementations addressing varying levels of underlying physical process details and assumptions. HMS components can be used in desktop and web-based workflows. A workflow can call into a specific implementation of an HMS component depending upon the details suitable for the problem statement being addressed by the workflow. Building a workflow from HMS components enables modelers to address hydrologic and water quality problem statements more precisely, in contrast to the current state of modeling where using existing models forces modelers into a potentially sub-optimal workflow. Model selection to address a problem statement has several drawbacks: the selected model may not have the appropriate level of complexity, the model may not address all parts of the problem statement without making less desirable assumptions, or the model may have more features and requirements than necessary. HMS components include data provisioning and simulation algorithms for water quantity and quality modeling. Workflows built using HMS components can in turn be used as components in larger workflows. For example, precipitation data provisioning components can download data from various data sources such as NLDAS, GLDAS, DAYMET, NCDC, PRISM, and WGEN. A simple workflow was developed as an HMS component to compare precipitation data from different sources. Comparison is performed using multiple rainfall statistics.