Date post: | 16-Jul-2015 |
Category: |
Environment |
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GLOBAL
ENVIRONMENT
AL PROBLEMS
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.
Elements of weather & climate
Temperature
Pressure
Wind direction and velocity
Humidity
Cloud cover
Precipitation
Sunshine
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
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).
Global worming
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
Natural causes
Continental drift
Volcanoes
The earth's tilt
Ocean current
Variations in the Earth's
Orbital Characteristics
Human causes
Greenhouse gases and their sources
How we all contribute every day
Atmospheric Carbon Dioxide Variations
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