Download climate - SNS Courseware

CLIMATE
WHAT DOES IT MEAN?
Atmospheric Conditions over a
long period of time.
(Temperature, Rainfall, Wind
etc.,)
Climatic Factors
• Solar Radiation from sun
• Wind
• Humidity
Solar Radiation from sun
• The earth receives
almost all its thermal
energy from the sun
in the form of
radiation.
Angle of Incidence
Angle of Incidence (900)
SUN’S PATH
• The position of the sun depends upon
- the geographic location (latitude)
- the time of year (season)
- the time of day (hour)
SUN PATH DIAGRAM
SUN PATH
DIAGRAM
WIND
• The reasons for the development of
winds is the uneven distribution of
solar radiation over the globe. It
results in differing surface heating
and
temperatures.
This
causes
differences in air pressure and, as a
consequence,
winds.
the
development
of
LOCAL WIND
Humidity and precipitation
• It occurs as rain, hail,
snow, clouds and vapour.
Humidity and precipitation
• Absolute humidity will be constant
• Relative humidity will vary depending on the absorption capacity
of wind
If Absolute humidity
> Saturation point –
Wind in the form of
fog and clouds
HUMAN REQUIREMENT REGARDING
INDOOR CLIMATE?