In a glance what strikes the mind when we hear of climate change? Probably there is a variation in our climatic condition which has either been made better in comparison with the past or the climate has changed it behaviour negatively. The later is not far from the truth.
How did this come about, what where humans and other living things doing while our climatic condition went hay wild,?
Check this out. According to Mauna Loa Observatory, atmospheric Carbon dioxide (a major green house gas (GHG)) record, in November 2015 Carbon dioxide had values of 400.16 ppm (part per million) as compared to November 2014 values of 397.27 ppm.
Why the increase in the concentration of Carbon dioxide in the atmosphere and what’s its effect?
One of the major identified cause of these rise is human activities, which comes from combustion of carbon-based fuels, principally coal, oil, and natural gas, along with deforestation.
Let me go a littile technical. Most of the light energy from the sun is emitted in wavelengths shorter than 4,000 nanometers (.000004 meters). The heat energy released from the earth, however, is released in wavelengths longer than 4,000 nanometers. Carbon dioxide doesn’t absorb the energy from the sun, but it does absorb some of the heat energy released from the earth. When a molecule of carbon dioxide absorbs heat energy, it goes into an excited unstable state. It can become stable again by releasing the energy it absorbed. Some of the released energy will go back to the earth and some will go out into space (Lansing State Journal, August 31, 1994).
So in effect, carbon dioxide lets the light energy in, but doesn’t let all of the heat energy out, similar to a greenhouse.
If this continues, some meteorologists expect that the average temperature of the earth will increase by about 2.5 degrees Celsius. This doesn’t sound like much, but it could be enough to cause glaciers to melt, which would cause coastal flooding.
BIOGAS PRODUCTION AND CLIMATE CHANGE
“Biogas” is a gas produced by anaerobic fermentation of different forms of organic matter and is composed mainly of methane (CH4) and carbon dioxide (CO2) in an anaerobic bio-digester.
The combustion of biogas also releases CO2. However, the main difference, when compared to fossil fuels, is that the carbon in biogas is up taken from the atmosphere, by photosynthetic activity of the plants. The carbon cycle of biogas is thus closed within a very short time.
Biogas production by anaerobic digestion reduces also emissions of methane (CH4) and nitrous oxide (N2O) (other examples of green house gases (GHG)) from storage and utilization of untreated animal manure as fertilizer. The GHG potential of methane is higher than of carbon dioxide by 23 fold and of nitrous oxide by 296 fold. When biogas displaces fossil fuels from energy production and transport, a reduction of emissions of CO2, CH4 and N2O will occur, contributing to mitigate global warming. Hence leaving our planet safe for generations to come.
So what are you waiting for, join this fight and #SaveTheEarth.