Climate Change: questions and answers part 1

Dear Friends, 

Climate change is now occurring all over world in a different way. Some countries are facing as extreme events such as extreme temperature, high intensity of rainfall and changed rainfall pattern. Some countries are also facing see level rises, high frequency of flood, melting ices and breaking icebergs, high frequency of wild fires due to rising temperature and these events are abruptly increasing and observed. Recently,  one report has been published in dw news "how melting icebergs in all over world" and weather warning in Europe has been increase as Europe now facing unusual stroms. Moreover, one report was published about drying Rhine river due to climate change and there are several incidents in India. However, Climate change is not a new topic. It was happening in historic time and several civilization was over due to extreme events.

Climate change

Further, climate change is long term process and it can not be over in one day. That can stop by spreading awareness about environment and how climate change is happening. There are several programs and research already ongoing funded by several agencies such as FAO, WHO, UNFCC, IPCC and local governments. Some time they also release some regulation regarding the climate change extreme and warnings.

Here, I am presenting some questions and answers which i submitted during one training course " Building resilience to climate change courses I and II" by united nation university Japan at IIT Kharagpur in year 2015. Hopefully, it will to help to under stand climate change. If any you have any question, Please let me know in comment section. Feel free for comments and suggestion.

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• Atmosphere has been mostly directly affected by human activities.Atmosphere contain the green house gases and these gases directly affect the atmosphere.

• There is rapid increase in the production of green house gases with increase in the no. of industries and also by methane gas in the atmosphere.

• Increase in radiative forcing from human activity is attributable mainly to increased atmospheric carbon dioxide levels. CO2 is produced by fossil fuel burning and other activities such as cement production and tropical deforestation.

• The atmosphere contains several trace gases which absorb and emit infrared radiation. These so-called greenhouse gases absorb infrared radiation, emitted by the Earth’s surface.

• The action of carbon dioxide and other greenhouse gases in trapping infrared radiation is called the greenhouse effect.

• Human activity since the Industrial Revolution has increased the amount of greenhouse gases in the atmosphere, leading to increased radiative forcing from CO2, methane, tropospheric ozone, CFCs and nitrous oxide.

Question and answer:

Q: Identify the 6 main components of the biophysical Earth system. Which one do you think has the most important role in determining global climate? Which of these are likely to have been most directly affected by human activities during the last thousand years?

Ans: The 6 main components of the biophysical Earth system is:

1. Lithosphere

2. Hydrosphere

3. Cryosphere

4. Atmosphere

5. Troposphere

6. Stratosphere

Since atmosphere contains the green house gases and is characterized by temperature, wind, precipitation, clouds and other weather elements, so atmosphere has the most important role in determining global climate.