Weather (Water Overlay): Difference between revisions

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Weather for the [[Water Module]] is defined as a [[Weather]] data. defines a number of environmental circumstances the hydrological model is subject to. It also defines the (total) simulation time.
Weather for the [[Water Module]] is defined as a [[Weather]] data, which defines a number of environmental circumstances the hydrological model is subject to. It also defines the (total) simulation time.


Weather is a required connection. There is always exactly one weather connected to a water overlay, and by default if no weather exists an appropriate weather effect is created and connected automatically.
Weather is a required connection. There is always exactly one weather connected to a water overlay, and by default if no weather exists an appropriate weather effect is created and connected automatically.


==Rain==
'''Rain'''
Rain is a consistent addition of water to the hydrological model over a specified period of time. At the end of the rainfall's duration, the specified amount of rain will have fallen in each location in the project. The simulation can calculate both periods of rain as well as dry periods.


During a period of rain, the rainfall is constant. In each timestep an equal amount of water will fall, such that by the end of the period of rain that exact of rain will have fallen.
Rain is a consistent addition of water to the hydrological model over a specified period of time. At the end of the rainfall's duration, the specified amount of rain will have fallen in each location in the project. The simulation can calculate both periods of rain as well as dry periods by setting the amount of rain for a specific period to 0. During any period, the amount of water added by rain per timestep is constant.


===Simulation time===
'''Evaporation'''
The total simulation time is composed of both the periods of rain, and the dry periods. It is possible to set up a simple, linear rainfall situation, in which a period of consistent rain is followed by a dry period. More complicated, custom configurations can be loaded in as well.


==Evaporation==
Evaporation is the consistent removal of water from the hydrological model over a specified period of time. As long as evaporation takes places at a certain rate, water both on the surface and ground layers can be subject to removal from the hydrological model. The evaporation rate defined by the weather is the base amount of all types of evaporation in the calculation.
Evaporation is the consistent removal of water from the hydrological model over a specified period of time. As long as evaporation takes places at a certain rate, water both on the surface and underground can be subject to removal from the hydrological model. The evaporation rate defined by the weather is the base amount of all types of evaporation in the calculation.
 
'''Simulation time'''
 
The simulation time is equal to the total amount of time defined for rainfall (and the accompanying dry periods).
 
{| class="wikitable"
! Attribute
! Unit
! Description
|-
|{{anchor|RAIN_M|[[weather rain m (Water Overlay)|RAIN_M]]}}
|{{time sequence end}}, m
|An [[Attribute array|array]] of values, each pair indicating until what time that period of rain will last and how much rain will fall in that period.
|-
|{{anchor|EVAPORATION_M|[[evaporation_m_(Water_Overlay)|EVAPORATION_M]]}}
|{{time sequence end}}, m/day
|An [[Attribute array|array]] of values, each pair indicating until what time that period of evaporation will last and what the evaporation rate is in that period.
|}


==How-to's==
==How-to's==
* [[How to set linear rain and simulation time (Water Overlay)]]
* [[How to set linear rain and simulation time (Water Overlay)|How to set linear rain and simulation time]]
* [[How to set linear evaporation rate (Water Overlay)]]
* [[How to set linear evaporation rate (Water Overlay)|How to set linear evaporation rate]]
* [[How to load in dynamic rain and simulation time (Water Overlay)]]
* [[How to load in dynamic rain and simulation time (Water Overlay)|How to load in dynamic rain and simulation time]]
* [[How to load in evaporation rate (Water Overlay)]]
* [[How to load in dynamic evaporation rate (Water Overlay)|How to load in dynamic evaporation rate]]


==See also==
==See also==
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* [[Evaporation model (Water Overlay)]]
* [[Evaporation model (Water Overlay)]]
* [[Surface evaporation formula (Water Overlay)]]
* [[Surface evaporation formula (Water Overlay)]]
* [[Underground evaporation formula (Water Overlay)]]
* [[Ground evaporation formula (Water Overlay)]]
 
{{WaterOverlay simulation data nav}}

Latest revision as of 16:32, 26 January 2024

Weather for the Water Module is defined as a Weather data, which defines a number of environmental circumstances the hydrological model is subject to. It also defines the (total) simulation time.

Weather is a required connection. There is always exactly one weather connected to a water overlay, and by default if no weather exists an appropriate weather effect is created and connected automatically.

Rain

Rain is a consistent addition of water to the hydrological model over a specified period of time. At the end of the rainfall's duration, the specified amount of rain will have fallen in each location in the project. The simulation can calculate both periods of rain as well as dry periods by setting the amount of rain for a specific period to 0. During any period, the amount of water added by rain per timestep is constant.

Evaporation

Evaporation is the consistent removal of water from the hydrological model over a specified period of time. As long as evaporation takes places at a certain rate, water both on the surface and ground layers can be subject to removal from the hydrological model. The evaporation rate defined by the weather is the base amount of all types of evaporation in the calculation.

Simulation time

The simulation time is equal to the total amount of time defined for rainfall (and the accompanying dry periods).

Attribute Unit Description
RAIN_M end-time, m An array of values, each pair indicating until what time that period of rain will last and how much rain will fall in that period.
EVAPORATION_M end-time, m/day An array of values, each pair indicating until what time that period of evaporation will last and what the evaporation rate is in that period.

How-to's

See also

Water Module
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Water Module
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Tutorials
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Overview
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Theory
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Benchmarks
Group
Weather
Rain m • Evaporation m
Prequels
Bottom distance • Bottom pressure • Bottom resistance • Ground conductivity • Groundwater datum • Groundwater depth • Manning • Max infiltration • Microrelief • Surface level • Surface u • Surface v • Terrain elevation • Unsaturated fraction
Elevation
Elevation
Related
Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Model attributes • Results
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