EE10 implements a significant enhancement in the pre- and post-processing capabilities of the EFDC_Explorer Modeling System. Along with new features and capabilities, EE10 presents an improved system of organizing the model settings and the viewing option that will be familiar to users acquainted with GIS and similar software tools.
This user guide is divided into three sections. The first section outlines the distinctive approach in the Navigating EFDC+ Explorer section. This briefly describes the various menus and forms that are used in EE10, the distinctive approaches to using them, and provides links to more detailed descriptions of each item.
The second section, Working with Models, describes the overall process the user should undertake to load, build, save, run, and visualize models.
Subsequent sections provide an in-depth explanation of each of the Model Control Form, plan view of the model (2DH View), slice views (2DV View), Time Series, Longitudinal Profiles Plots, Vertical Profiles. At the lower level the operation of the Model Control Form is similar to previous versions of the EE8 series, although navigating to the forms is quite different.
A separate How-To Guide for EE10 provides step-by-step guidance on how to set up, run, and visualize a variety of different models.
Please reference this document as follows:
DSI LLC. 2023. EFDC+ Theory, Version 11.8. Published by DSI LLC, Edmonds, WA. Available at:
https://www.eemodelingsystem.com/wp-content/Download/Documentation/EFDC_Theory_Document_Ver_11.pdf
The major advance in EEMS 12 is the addition of the GOTM (General Ocean Turbulence Model) to EFDC+ and EE. In addition, algae vertical migration is now simulated by EFDC and configured in EE. The major change to EE is the new capability of handling the Geographic coordinate system. Other changes include:
The long-term stable release of EEMS contained a number of new features. Some of the main ones included:
DSI has developed a new generation grid-building tool called Grid+, which is available with the release of EEMS11.3. Grid+ replaces our previous grid generator, CVLGrid which is still available in EEMS10.3. User guidance for Grid+ is available here. The new EEMS also contains the following enhancements:
One change in EEMS11.2 was changing the name of the tool from EFDC_Explorer to EFDC+ Explorer. A number of bug fixes were made to EFDC+ and enhancements in EE included:
EEMS11.1 implements a number of enhancements. The ability to export the EFDC+ output files in the latest NetCDF UGRID format provides considerable efficiency gains. This approach has been used in the Lake Washington Real-time model for some time and is now being made available to users of EEMS. At the request of several clients, we have upgraded EFDC+ so that it can now write the hydrolink file required by the WASP8 water quality model. These enhancements and several others are outlined on this page, and briefly summarized below with links to the relevant pages in this User's Guide. Changes have been made to both EE and EFDC+ unless otherwise noted:
Enhancements to EEMS10.3 provide powerful new sediment transport capabilities in the propwash module, as well as a significant upgrade to the aquatic biota capabilities. These enhancements and several others are outlined in this page, and briefly summarized below with links to the relevant pages in this User's Guide. Changes have been made to bother EE and EFDC+ unless otherwise noted:
Unlimited Number of Algal and Periphyton groups,
Unlimited Zooplankton Groups
Improved Wind Wave Options (EE)
EEMS10.2 provides a number of significant enhancements to this modeling system. These are briefly summarized below with links to the relevant pages in this User's Guide. Changes have been made to bother EE and EFDC+ unless otherwise noted:
It is unrealistic to try to list all of the “differences” between EE8.5 and EE10 because EE10 is a wholly rewritten interface in a modern programming language. However, some of the more significant changes include:
EE10 also includes a number of significant improvements and new features in the EFDC+ code. Some of the features in version 10 compared to version 8.4 include:
EEMS10 now has the ability to simulate spatially and temporally varying fields, such as wind or barometric pressure fields. EFDC+ can receive time varying forcings within its computational domain from external sources in the form of ASCII or binary files. These fields can be configured for:
The number of dye classes is now unlimited, with each class able to have a unique set of properties including: