Restructuring of USACE HEC-HMS Meteorologic Model

 
Met Model Restructure
 
USACE HEC-HMS CoP Webinar Series
December 2022
 
Thomas Brauer, 
P.E.
David Ho, 
P.H.
Mike Bartles,
 P.E.
Daniel Black
 
Summary
 
The HEC-HMS meteorologic model has undergone significant
modification to make certain modeling tasks easier and more
intuitive
The effort is known amongst the HEC-HMS team as the "Met
Model Restructure."
HEC-HMS v4.9 through v4.11 include Met Model Restructure
updates
 
Outline
 
1.
Met Model Restructure Overview
2.
Demo of Interpolated Meteorology
3.
Demo of Snow Migration
4.
Demo of Snow Zonal Editors
 
Met Model Restructure
 
Process Generalization
Pre v4.9
v4.9 and
newer
First-order
processes on
subbasin node
Every process
its own method
 
Basin-Meteorology Linking
Requires
subbasin-level
parameters
Tab Included
Gridded methods do not
require subbasin-level
parameters
No tab
 
Compute De-coupling
 
Met Model
 
Basin Model
 
Time Step
 
Met Model
 
Basin Model
 
Time Step
 
Cached Met Model
Pre v4.9
v4.9 and
newer
 
Interpolated Meteorology
 
New Meteorological method in
4.10
Interpolating point data within
HMS
Precipitation, Temperature,
Windspeed, Dew Point
Temperature,
Evapotranspiration, Longwave
Radiation
Create gridded dataset for
gridded domain or time series at
point locations for non-gridded
domains
 
8
 
Interpolated Meteorology
 
Why is this useful?
Estimate values at grids or points within a watershed following Tobler’s first
law
Create historic gridded meteorology
Visualize storms spatially and temporally
Adjust values using a bias grid or lapse rate
Define your own grid size
Does not rely on external software (i.e. gageInterp) to generate gridded
dataset
 
 
 
 
 
 
9
 
Interpolated Meteorology
 
Meteorological Model Set up
Ensure C-Part is PRECIP-INC
Data type is PER-CUM
Consistent Units
Add time-series point data
Include lat/long
Elevation for Temperature gages
Select a radius of influence
 
 
 
10
 
Interpolated Meteorology
 
Four Interpolation Methods
Inverse Distance
Inverse Distance Squared
Nearest Neighbor
Bilinear
Bias Grid for Precipitation
Account for topography
PRISM 30 yr normal/100yr Precip-Freq Grid
Lapse Rate for Temperature
i.e. -3° F/1000ft
 
11
 
Snow Migration
 
Within v4.9 and earlier, snow
methods were a part of the
meteorologic model
 
Snow Migration
 
Starting with v4.10, snow methods
are a part of the basin model
 
Snow Migration
 
Migration happens automatically
Basin model/met model combinations
that used snowmelt will result in
basin model copies
Simulation Runs, Forecast
Alternatives, etc will update
automatically
 
Snowmelt Zonal Editors
 
Snowmelt zonal editors
available for Temperature
Index and Gridded
Temperature Index
 
Snowmelt Zonal Editors
 
Global values can be applied to all elements within a zone
Override values can be applied to individual elements
Quickly apply changes to one or more snowmelt parameters
 
Snowmelt Zonal Editors
 
Thank You!
 
USACE CWMS National Implementation Program
USACE MRG&P
USACE EL WQ R&D
USACE General Investigations
 
For more…
Slide Note
Embed
Share

Significant modifications have been made to the HEC-HMS meteorologic model to enhance modeling tasks' ease and intuitiveness. The Met Model Restructure updates in versions 4.9 to 4.11 streamline meteorologic processes, introduce new features like automatic linkages and zonal editors for snowmelt, and emphasize basin-meteorology linking and de-coupling computations. The webinar series covers an overview of the restructured model, demos of features like interpolated meteorology, snow migration, and zonal editors, and explains the process generalization and basin-meteorology linking in detail.


Uploaded on Jul 13, 2024 | 0 Views


Download Presentation

Please find below an Image/Link to download the presentation.

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.

E N D

Presentation Transcript


  1. Met Model Restructure USACE HEC-HMS CoP Webinar Series December 2022 Thomas Brauer, P.E. David Ho, P.H. Mike Bartles, P.E. Daniel Black

  2. Summary The HEC-HMS meteorologic model has undergone significant modification to make certain modeling tasks easier and more intuitive The effort is known amongst the HEC-HMS team as the "Met Model Restructure." HEC-HMS v4.9 through v4.11 include Met Model Restructure updates

  3. Outline 1. Met Model Restructure Overview 2. Demo of Interpolated Meteorology 3. Demo of Snow Migration 4. Demo of Snow Zonal Editors

  4. Met Model Restructure Version Feature v4.9 Meteorologic processes generalized v4.9 Meteorologic model and basin model computes de-coupled v4.9 v4.10 Automatic linkages for a gridded met model Interpolation methods added for all meteorologic processes v4.10 Snow methods migrated to the basin model v4.11 Zonal editors for snowmelt introduced

  5. Process Generalization v4.9 and newer Pre v4.9 Every process its own method First-order processes on subbasin node

  6. Basin-Meteorology Linking Requires subbasin-level parameters Gridded methods do not require subbasin-level parameters Tab Included No tab

  7. Compute De-coupling Met Model Time Step 1 2 3 4 5 6 7 8 n 1 2 3 4 5 6 7 8 n Pre v4.9 Basin Model Cached Met Model Met Model 1 2 3 4 5 6 7 8 n Time Step 1 2 3 4 5 6 7 8 n v4.9 and newer 1 2 3 4 5 6 7 8 n Basin Model

  8. Interpolated Meteorology New Meteorological method in 4.10 Interpolating point data within HMS Precipitation, Temperature, Windspeed, Dew Point Temperature, Evapotranspiration, Longwave Radiation Create gridded dataset for gridded domain or time series at point locations for non-gridded domains 8

  9. Interpolated Meteorology Why is this useful? Estimate values at grids or points within a watershed following Tobler s first law Create historic gridded meteorology Visualize storms spatially and temporally Adjust values using a bias grid or lapse rate Define your own grid size Does not rely on external software (i.e. gageInterp) to generate gridded dataset 9

  10. Interpolated Meteorology Meteorological Model Set up Ensure C-Part is PRECIP-INC Data type is PER-CUM Consistent Units Add time-series point data Include lat/long Elevation for Temperature gages Select a radius of influence 10

  11. Interpolated Meteorology Four Interpolation Methods Inverse Distance Inverse Distance Squared Nearest Neighbor Bilinear Bias Grid for Precipitation Account for topography PRISM 30 yr normal/100yr Precip-Freq Grid Lapse Rate for Temperature i.e. -3 F/1000ft 11

  12. Snow Migration Within v4.9 and earlier, snow methods were a part of the meteorologic model

  13. Snow Migration Starting with v4.10, snow methods are a part of the basin model

  14. Snow Migration Migration happens automatically Basin model/met model combinations that used snowmelt will result in basin model copies Simulation Runs, Forecast Alternatives, etc will update automatically

  15. Snowmelt Zonal Editors Snowmelt zonal editors available for Temperature Index and Gridded Temperature Index

  16. Snowmelt Zonal Editors Global values can be applied to all elements within a zone Override values can be applied to individual elements Quickly apply changes to one or more snowmelt parameters

  17. Snowmelt Zonal Editors

  18. Thank You! USACE CWMS National Implementation Program USACE MRG&P USACE EL WQ R&D USACE General Investigations

  19. For more https://www.hec.usace.army.mil/software/hec-hms/ https://www.hec.usace.army.mil/software/hec- hms/email_list.aspx

Related


More Related Content

giItT1WQy@!-/#giItT1WQy@!-/#giItT1WQy@!-/#giItT1WQy@!-/#