Climate:The average weather conditions of a region for a long
time (about 30 years) is called climate.
There are some factors which effect climate.
1) Distance from the equator 2)
Distance from the Sea 3)Altitude
from the sea level
4) Direction of wind 5)
Direction of mountain 6)
Ocean currents
The weather is hot at the equator
while cold at both the pole.
The world is divided in to the following three
large regions on the base of latitude.
Torrid
Zone (منطقہ حارہ):It is located between 23.5 degree to
the north and south of equator.
The weather of these areas remains hot
all the yearlong.
Temperate
Zone (منطقہ معتدلہ):The region is located between 23.50 and
66.50 in the northern and southern hemispheres.
These areas are warm in summer
and cold in winter.
Frigid Zone (منطقہ باردہ): This region is located between 66.50
and 900 in the northern and southern hemispheres.
The weather of these areas remains moderate
in summerextremely cold in winter.
Pakistan is locatedin the north from tropic of cancer.
Therefore its climate should be moderate.
The climate of our
country is change from place to place because of its physiographic and
structure.
Climate of mountain region:The northern, north western and north eastern hilly areas
of Pakistan are up above the sea level.
The winter season is long
and extreme there. Similarly the summer season is also moderates
there.
Climate of the plains regions:Most
of areas of Punjab and Sindh are situated in Indus plain.
Summer season of Sindh and south Punjab is
very hot and long.
Climate of Baluchistan Plateau:Baluchistan
plateau covers a vast area of land. Its summer season is dry and hot
while, winter season is moderate.
Effect of human activities on
climate: Industries are rapidly increasing
which causes emission of the poisonous gases like carbon mono oxide
and chlorofluorocarbon (CFC).
Greenhouse gases: The atmospheric gases which absorb energy
from the sun and restrain it to return back in the atmosphere are called
greenhouse gases.
Greenhouse gases include carbon
dioxide, carbon monoxide, water vapors and dust
particles.
Twister: Many times at some places the wind
starts blowing in circular motion this is called twister.
Cyclone:When twister circle wind cover an area of several
kilometers then it is called Cyclone.
