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ShadeCalendar links your local climate to your requirement for protection against UV
radiation. It shows when you should be providing solar protection and when people
are likely to want outdoor warmth for your location over the year.
Your ShadeCalendar will look similar to one of the examples shown below. You can use it to check what sort of shade is recommended in your location throughout the year.
Three types of shade
| Cool Shade |
when temperature and UV radiation levels are high
block sunlight and block UV radiation
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| Warm Shade |
when temperature is low but UV radiation levels high
allow sunlight but block UV radiation
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| No Shade |
when temperature and UV radiation levels are low
allow sunlight and allow ‘safe’ UV
radiation
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How ShadeCalendar works
Using a climate index called Apparent
Temperature, ShadeCalendar assesses the annual climate data and UV
Index of your location and creates a model for climate-responsive, solar protective
shade.
Apparent temperature is a measure based on human comfort. Using temperature, humidity,
wind speed and radiance (the main factors affecting thermal comfort) it computes
an index based on some typical humanfactors, such as perspiration rates, radiation
absorption and metabolism.
In computing Apparent Temperature at different locations, ShadeCalendar uses location-specific
annual temperature and humidity data and 'typical' values for wind speed (based
on a slight breeze) and radiation (based on moderate sunlight under clear sky
conditions). To decide on a cut-off point, ShadeCalendar uses a ‘bioclimatic
chart’ of human comfort and calculates the corresponding Apparent Temperature.
To assess the intensity of UV radiation, the monthly average maximum UV Indexes
as provided by the Australian Bureau of Meteorology (BoM) and the New Zealand
National Institute of Weather and Atmosphere (NIWA), are used.
Combining UV Index and Apparent Temperature results in three shade options for
different times of year.
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