Fun facts about Climate change

Over the years, I’ve learnt some interesting facts about the atmosphere and climate change…

Cloud cover

  1. Water vapour is evaporated from the seas , which covers 70% of the global surface area.
  2. The warmer air is, the more water vapour it can hold. [1,2]
  3. The more water vapour there is in the atmosphere, the more cloud cover exists.
  4. Cloud cover blocks sunlight, reducing global warming.

Conclusion 1: atmospheric temperature is naturally regulated by water vapour.

Plant growth

  1. Increased atmospheric water vapour increases precipitation (rainfall).
  2. Increased rainfall increases plant growth.
  3. Increased carbon dioxide concentration increases plant growth. [3]
  4. Increased atmospheric temperature ALSO increases plant growth.

Conclusion 2: “global warming” creates a greener planet. This is a good thing.

Arctic sea ice

  1. Arctic ice is floating sea ice
  2. Floating ice displaces the same volume as melted ice. [4]

Conclusion 3: melted Arctic ice will not contribute to rising sea levels.

Inland glacial ice

  1. The worst case scenario projections of global warming/climate change estimate that the atmospheric temperature will increase by 5C over the next 100 years. Most estimates indicate a 2C rise over the next 100 years. [5]
  2. Average coastal temperature of Antarctica is -10C. The majority of Antarctic ice is much further inland, where temperatures are much much colder (in excess of -50C). [6]
  3. Greenland’s ice sheet has an average temperature of -12C in summer. [7]

Conclusion 4: “Climate Change” will not melt either Greenland or Antarctic land ice.

Sea levels

  1. Increased atmospheric water vapour increases precipitation.
  2. Increased precipitation increases polar ice.
  3. Vast majority of precipitation water is evaporated sea water.

Conclusion 5: as “global warming” increases polar ice, it may even lead to sea levels falling.

Greenhouse effect of CO2

  1. The greenhouse effect of CO2 is logarithmic [8]. This means that for every doubling of CO2 concentration in the atmosphere, the greenhouse effect will only increase by 1.5%.
  2. Global atmospheric temperature has risen by about 1C over the last 150 years (since the dawn of the industrial revolution).
  3. Atmospheric CO2 concentration has risen from 280ppm to 415ppm over the last 150 years, an increase of just under 50% (135ppm).
  4. Assuming a worst case scenario, that all the temperature rise is attributable to human CO2 emissions: 50% increase in CO2 concentration corresponds to 1C rise. This means that a temperature rise of 3C would require increasing CO2 concentration by 200% – to over 800ppm.
  5. At the current rate of CO2 increase, it would take us over 400 years to reach 800ppm.

Conclusion 6:  We are nowhere near to increasing the atmospheric temperature by 3C.

The biggest greenhouse gases

  1. Human activity contributes only about 4% of global CO2 emissions (29 gigatons per year compared to 750 gigatons of natural CO2 emissions). [9]
  2. CO2 contributes 26% to the overall greenhouse effect.
  3. Water vapour is by far the most significant greenhouse gas, contributing an estimated 60% of the overall greenhouse effect. [10]
  4. There is no way to control the amount of water in the atmosphere.

Conclusion 7: Human efforts have very little impact on global warming.

So what do you think? Does this make you feel less alarmed about climate change? Feedback and corrections welcome.

References

[1] A closer look at evaporation and condensation

[2] Saturated Vapor Pressure, Density for Water

[3] Carbon Dioxide Fertilization Greening Earth

[4] Why does ice melting not change the water level in a container?

[5] 2014 Energy and Climate Outlook

[6] Climate of Antarctica

[7] Climate – Greenland

[8] The Logarithmic Effect of Carbon Dioxide

[9] How do human CO2 emissions compare to natural CO2 emissions?

[10] Climate Data Information – Gases

Author: Hoong-Wai

I am a sinner. I care about people, and truth, and justice. I have an interest in dancing, economics, engineering, philosophy, and science.

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