Weather Indicator should show humidex value
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Weather Indicator |
Fix Released
|
Wishlist
|
Vadim Rutkovsky |
Bug Description
How is the humidex calculated?
A.
The Humidex formula is based on the work of J.M. Masterton and F.A. Richardson at the Atmospheric Environment Service (now MSC) of Environment Canada in 1979. It is a standard for Canada, but variations are used around the world. The dew point temperature should be given in kelvins (temperature in K = temperature in °C + 273.16) for the formula to work. The magic number 5417.7530 is a rounded constant; it's based on the molecular weight of water, latent heat of evaporation, and the universal gas constant.
e = vapour pressure in hPa (mbar), given by:
e = 6.11 * exp [5417.7530 * ( (1/273.16) - (1/dewpoint) ) ]
h = (0.5555)*(e - 10.0);
humidex = (air temperature) + h
from Environment Canada web site
Changed in weather-indicator: | |
milestone: | none → 11.02.16 |
importance: | Undecided → Wishlist |
Changed in weather-indicator: | |
status: | New → Triaged |
Changed in weather-indicator: | |
assignee: | nobody → Vadim Rutkovsky (roignac) |
status: | Triaged → In Progress |
Changed in weather-indicator: | |
status: | In Progress → Fix Committed |
Changed in weather-indicator: | |
status: | Fix Committed → Fix Released |