Long Name: HYdrological Predictions for the Environment
Model Type: Continuous; semi-distributed
Flood Mechanism: Riverine flood; rainfall-only and rainfall-snowmelt; flash flood
Integrated hydrological and water quality model, tunable reservoir regulation schemes, land management routines (e.g. crop characteristics, substance emission from point sources), data assimilation methods.
HYPE simulates water flow and substances on their way from precipitation through soil, river and lakes to the the river outlet. The model is forced by precipitation and temperature plus optionally other variables and then calculates flow paths in the soil based on snow melt, evapotranspiration, surface runoff, infiltration, percolation, macropore flow, tile drainage, and lateral outflow to the stream from soil layers with water content above field capacity. The groundwater level fluctuating and may saturate the soil layers. The basic modeling unit is a subcatchment, which is further subdivided into hydrological response units (HRUSs) as unique combinations of soil type and landcover. Gridded analysis is also supported with gridded atmospheric components. Tools are included for parameter estimation (optimization). The first version was released in 2010. Development is very active with continuous update of the model version with additional components and bug fixes. The current version 5.23.1 was released in July 2023.
Available methods for flood wave routing
A conceptual routine which simulates attenuation and delay in rivers.
Available methods for reservoir routing and gate control operations if any
Specified release, general or reservoir specific storage-discharge relationship.
Available methods for shortwave radiation
Specified time-series, FAO56.
Available methods for longwave radiation
FAO56
Available methods for precipitation
Sub-catchment average. Undercatch adjustment with respect to elevation or form of precipitation as as optional parameter.
Available methods for potential evapotranspiration
Specified time-series, temperature based routine, Modified Hargreaves-Samani, Modified Jensen-Haise, Priestley Taylor, FAO Penman Monteith.
Available methods for snow accumulation and melt
Degree-day factor method, degree-day with radiation index, fractional snow cover.
Available methods for infiltration
Threshold dependent and modulated by macropore flow, surface runoff and frozen soil.
Available methods for surface runoff
Available methods for subsurface baseflow
What types of input data are required for the model
Precipitation, air temperature for snowmelt and evapotranspiration.
What file formats can be used for input data
Text file, netCDF file under development.
What time interval is required for input data, and how are daily values utilized
Typically hourly to daily, other time steps are possible but not tested extensively, Evapotranspiration routine availability is currently limited in all time steps other than daily.
What tools are available for calibration and optimization
Multiple optimization algorithms are available for estimating parameters using observed flow data. There are nine methods (sampling methods and directional methods) of optimization to choose from in HYPE.
Can observed flow and previous forecast flow be used to update the forecast flow
Observed flow data can be used to replace simulation flow during forecasting.
Can ensemble meteorologic forecasts be used in the model
Yes, HYPE can be run with flag ‘-sequence’ to use ensemble forecasts.
How is uncertainty represented in the outputs
Indirectly if ensembles are run, either forecast ensembles or parameter ensembles.
What time interval is used for simulation
Typically hourly to daily, other time steps are possible bu no tested extensively. Evapotranspiration routine availability is currently limited in all time steps other than daily.
What types of output time-series are available
A multitude of model state and flux variables re available, including surface water, snow, sub-surface reservoir variables. Outputs cover model variables which correspond to observation time series and internal process variables for diagnostic model evaluation.
What is the file format for output time-series data
Text file, netCDF file under development.
What types of output statistics are available
Flows neccesary for showing mass balance, comparisons to observed data.
What is the file format for output statistics data
Text file
Platforms from this inventory in which this model can be integrated
Additional platforms in which this model can be integrated
Difficulty level for installation and configuration
Education level recommended for users
Score from 1 (difficult) to 5 (easy) rating the overall difficulty of use
How much GIS support is included for watershed delineation and parameter estimation
What tools are included for importing and preparing time-series data
Parameters for infiltration, surface runoff, baseflow for each catchment
What tools are included for estimating model parameters from physical data
What tools are included for model calibration
What tools are included for model verification
Minimum hardware requirements
Operating system – MS Windows, LINUX
Programming language used for the core code (e.g. Fortran, C++, Java). If workflow scripting is supported (e.g. Python) then please specify
Open source or closed source
Date of latest update and the version number for the release
Date of next planned update and the version number for the release
Is there an active developer community with regular updates and new releases?
Training Material URL (including example data sets): http://www.smhi.net/hype/wiki/doku.php?id=start:hype_tutorials
US Swedish Meteorological and Hydrological Institute (SMHI)Army Corps of Engineers
http://hypecode.smhi.se/
Mailing Address:
Swedish Meteorological and Hydrological Institute (SMHI)
Folkborgsvägen 1
601 76 Norrköping
Sweden
Phone: +46 11.495.8000
Fax: +46 11.495.8001
HYPE