Recent years have been characterized by major climatic changes. The climate is changing dramatically. This is shown through the unpredictable rain patterns. The expected rains are not received as they used to before. The rainfall is experienced earlier or later than the expected period. This is affecting economic activities that rely on rainfall. Economic activities such as agriculture. The temperatures that are becoming so hot also indicate adverse changes of the climate. Particular regions are experiencing higher levels of temperature than they used to. This leads to the question. What are the biggest contributors to climatic change? Here are some of the biggest contributors to climatic change.
Many researches done mostly point to greenhouses gases being the biggest contributors to climatic change. These are gases that behave like a blanket. The blanket is a thermal blanket that covers the earth. The gases absorb heat from the sun. The greenhouse gases then trap radiating heat that is moving from the earth. These gases prevent the heat from escaping from the earth’s atmosphere. When this happens the greenhouse gases cause global warming. This is what is referred to as greenhouse effect.
Global warming is a major cause of climatic change. It accounts for most of the dramatic climate alternations. The increased temperature may increase the level of the sea by melting the frozen water. The sea level may also be increased by water expanding due to increased levels of temperature. Global warming also encourages heavy rainfall in particular areas while encouraging desertification in other areas. Some pests and diseases are known to thrive in high temperatures.
Some greenhouse gases include Chlorofluorocarbons (CFCs), Nitrous oxide (N2o), Carbon dioxide (CO2), water vapour and methane gas. These gases are among the biggest contributors to climate change.
Climatic forcings are determiners of climate. They also contribute a lot to climatic change. The climatic forcings include: (a)Solar irradianceThis refers to power produced by the sun per unit. The power is in the form of magnetic radiation. This is also a great contributor of climatic change. Solar irradiance at areas facing directly to the sun is more intense than other areas. Variation in solar irradiance may entirely change the climate of an area. (b)Reflection coefficientThis is also known as Albedo. It is the reflecting power of the earth surface. Areas which are unable to reflect sunlight away experience changes in climate. The Albedo may change in certain regions. This may also lead to climatic change.
Greenhouse gases may be causing great climatic change but cutting down of trees also contribute to climatic change. Green plants like trees act as reservoirs of carbon dioxide. They absorb carbon dioxide during the day. This happens when the plants are making plant food through photosynthesis. Absorption of this gases reduces its emission to the atmosphere. This reduces the greenhouse effect that bring about climatic change. Deforestation destroys carbon dioxide reservoirs. These leads to more carbon dioxide been released to the atmosphere. Trees also contribute to formation of rain. Forests are regarded as water catchment areas. Through transpiration trees loose water which is evaporated to the atmosphere. The water that evaporates forms clouds which eventually bring rain. Cutting trees down may change the climate by leading to desertification. Areas with few or no trees do not receive sufficient rainfall. These areas may dry up leading to change in climate of the regions.There are numerous contributors to climatic change. The above are among the biggest contributors to climatic change.