GLOBAL ENVIRONMENTAL PROBLEMS

1. GLOBAL
ENVIRONMENT
AL PROBLEMS

2.  Weather is the
condition of the
Atmosphere at a
given place or time.
 It is very dynamic for
it may change several
times even in a day.
 Average weather
conditions, showing
uniformity over a
period of few months
may be describe as a
seasons.
 Climate is the
average weather
condition or
Atmospheric
conditions of an area
over a considerable
period of time.
 For climate averages,
a minimum period of
35 years is desirable
 Thus the climate is
the same over large
areas & it does not
change often.

3. Elements of weather &
climate
 Temperature
 Pressure
 Wind direction and velocity
 Humidity
 Cloud cover
 Precipitation
 Sunshine

4.  Climate change is a
change in the
statistical distribution
of weather over
periods of time that
range from decades to
millions of years.
 It can be a change in
the average weather or
a change in the
distribution of weather
events around an
average (for example,
greater or fewer
extreme natural events

5.  Climate change may be
limited to a specific
region, or may occur
across the whole Earth.
 In recent usage,
especially in the context
of environmental policy,
climate change usually
refers to changes in
modern climate.
 It may be qualified as
anthropogenic climate
change, more generally
known as "global warming"
or "anthropogenic global
warming" (AGW).

6. Global worming

7. There are five gases which are mainly
responsible for the green house effect and
global warming. These gases are-
 Carbon dioxide (CO2) 55%
 Methane (CH4) 15%
 Nitrogen oxide (NO2) 6%
 Chlorofluro carbons (CFC) 24%
 Water vapour

10. Natural causes
 Continental drift
 Volcanoes
 The earth's tilt
 Ocean current
 Variations in the Earth's
Orbital Characteristics

11. Human causes
 Greenhouse gases and their sources
 How we all contribute every day
 Atmospheric Carbon Dioxide Variations

15. Industrialization
Carbon dioxide
Use of AC/fan etc. electric goods
Deforestation
Utilization of chemicals and fertilization
Release of gases from Brick field
Vehicle gas or dust