environment ppt project
TRANSCRIPT
Setting the Agenda
• Objective & Purpose
• Weather & Climate
• Atmosphere
• Weather – Climate-Climate System
• Climate Change : Definition
• Discussions & Feedback
Basics :If this is happening frequently & repeatedly at a place for
last many decades and it’s a regular phenomenon then it is
referred as CLIMATE of the area .
If this is a non –frequent occurrence or for a short period or
it is not the regular phenomenon of the area then it is
referred as the WEATHER of the area.
Understanding
When we talk for a short period – WEATHER
When we are discussing for a very long period may be 20-30 -40 years or more - CLIMATE
Question: What are we talking
about ?
The Conditions of
ATMOSPHERE
Atmosphere is the envelop of Gases Surrounding the Earth
Revisiting our Definition :Weather and Climate
WEATHER :
It is the combination of all the specific
characteristics of the atmosphere in a region.
Day to day state of the atmosphere in a region and
its short term variation ( days to week )
Revisiting our Definition :Weather and Climate
CLIMATE:
It is WEATHER of a region averaged over a long
time period ( 25-30) yrs.
Revisiting our Definition :Weather and Climate
Weather Statistics
Averaged over a long time period Climate
METROLOGY
CLIMATOLOGY
We Say :• Cloudy Weather• Cold Waves• Snowy• Scorching Heat
We Say :• Desert Climate• Polar Climate• Monsoon Climate• Tropical Climate
Are these things so SimpleWeather and Climate
Weather is a day to day state of Atmosphere
That is
State of the Characteristics of the atmosphere
Now What is Climate ?
To Understand this aspect we have to first build understanding of
Climate System ?
Climate System
When we talk about climate …
The Context is large
( 5 Components )
Area is wide.
(Region)
Studies are deep
( 30 yrs or more...)
Climate System
All Natural or Man Made activities within the Components
of Climate System of a region affects largely or partially the
Weather or Climatic conditions of the area.
Changes in components of Climate system
Climate SystemSample Factors affecting Changes in components of
Climate system
Geosphere
Volcanic Eruptions Land use Pattern Earth quake
Climate SystemSample Factors affecting Changes in components of
Climate system
Biosphere
Fossil Fuel Burning Nuclear Emission
Climate SystemSample Factors affecting Changes in components of
Climate system
Hydrosphere
Oil SpillsSewageWaste dumping
Climate SystemSample Factors affecting Changes in components of
Climate system
Cryosphere
Melting of ice caps Receding glacier