Best climate change essay 2021| climate change essay 2021
The environment around the Earth is an important component of the natural environment and biosphere ecosystem because when all kinds of existence in the system are possible only because of the gases contained in the atmosphere. It acts like an atmosphere because it absorbs incoming ultraviolet radiation from the Sun and prevents them from reaching the Earth’s surface, so the surface temperature does not rise excessively.
Climate is the average of the weather events of a place over a long period of time. Earth’s climate is not good. Weather and climate and natural causes change on a local, regional and global scale, but following the development of science and technology after the Industrial Revolution, human affairs have begun to change rapidly as humans alter the fundamental structure of atmospheric organizations. Gives and is able to crush. Its effect has started to affect the flora and fauna of the human community. Especially the very existence of mankind is in danger. This type of change in climate is called climate change. This means climate change caused by human activities 100 years ago. The geographic meaning of climate change is a long-term change in seasonal patterns.
Climate change parity is measured by a large change in temperature, precipitation, snow and wind patterns that occurs over several years. Climate change is being caused by humans burning large amounts of fossil fuels such as coal, oil, natural gas (which reduces the absorption capacity of carbon and forests and releases accumulated carbon into the atmosphere).
signs of climate change
Since the origin of the Earth, there have been many changes in the climate. Evidences of climate change in the Earth’s past years are called indicators of climate change. Here are some complete climate signs details-
biological indicators
- Botanical Indicators – Fossils of plants, oxygen isotopes, growths found in tree trunks.
- Zoological indicators – distribution and transmission of animal fossils, fossils, animals.
physical indicators
- Sediment deposits in glacial lakes, coal sedimentary deposits, soil indicators, traces of advance and retreat of glaciers in certain latitudes.
snow indicator
- Geological records reveal the transition process between the Ice Age and the Inter-Ice Age, respectively.
tectonic indicator
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Plate tectonic – poleward movement and continental drift, hypochromaticism and oceanic diffusion.
change in sea level.
historical record
- flood record
- dry record
factors affecting climate change
Climate change is a long-term process that is influenced by natural and human actions. Before industrialization human factors played little role in this process. The process of industrialization, urbanization and indiscriminate exploitation of resources has created serious problems in the form of global warming and pollution. The following are the natural and human factors of climate change.
The effect of natural factors on climate change
The atmosphere generally maintains a state of stability, due to which there are short to long term changes in weather and climate in terms of time and space. Long-term climate change persists for thousands of years and occurs very slowly. Climate change is always caused by natural work.
- Variation in solar radiation – The amount of sunset that the Earth receives keeps on decreasing due to changes in the Earth’s orbital position or changes in the Earth’s axial tilt etc. Prolonged increases in the amount of sun’s radiation cause the atmosphere to warm, producing a warmer climate and melting ice sheets and glaciers. Similarly, due to a decrease in the amount of sunlight, atmospheric temperature declines, leading to the rise of the sheet phase of the climate and finally the arrival of the Ice Age. Again the increase in the Sun’s radiation due to contraction in the Sun core leads to an increase in atmospheric temperature and the Himalayan period ends and begins intermittently.
- Sunspot Cycle – The activation of solar stigma increases as the number of solar stigmas increases, which increases the amount of solar radiation. This heats up the Earth’s surface and its atmosphere. For this reason, decreasing the solar stigma reduces the amount of solar radiation, which leads to a drop in atmospheric temperature.
- Volcanic weathering – Dust and ash emitted by volcanoes destroy some of the short-wave Sun’s radiation in the lower atmosphere by scattering, reflection and absorption, thus reducing the amount of Sun’s radiation reaching the surface. Because the temperature of the lower atmosphere is controlled by the weather and climate at Earth’s surface, it causes the Earth to cool. After the Philippines’ Pinatubo volcanic eruption in 1991, the Earth’s average temperature dropped to about 0.5 °C.
- Changes in atmospheric gaseous composition – There is a constant change in the amount of carbon dioxide, nitrous oxide, methane, water vapor etc. in the atmosphere. Their emissions are mainly due to natural factors and the imbalance of these gases produced by nature is balanced by different regions. But when man-made causes a change in this balance of the earth, its compensatory nature is unable to do so. As a result, events such as climate change occur.
- Continental Drift – Various theories related to continental drift such as Wegener’s continental theory, Harry Haas’s ocean net spread and Morgan’s plate tectonic theory are also helpful in explaining the causes of climate change.
The impact of man-made factors on climate change
Short-lived climate change occurs through humanization, urbanization, industrialization, etc., for human-caused work. The current climate change is a man-made problem. Man affects the environment with his problems. The activities carried out by human beings with nature to achieve economic objectives and material goals have destroyed the balance of the natural environment. Such problems are called environmental degradation. This environmental degradation is the only problem facing humans in Haji in the form of climate change and pollution. The anthropogenic factors and their contribution to climate change are as follows:
- misuse of resources
- Urbanization and rapid industrialization
- Fuel scarcity and use of fossil fuels
- massive land use change
- Increase in the emission of GHG, CO2 etc. into the atmosphere
- ozone depletion in the stratosphere
- rise in temperature
Effects of climate change on humans and ecosystems
Climate change has been affecting the human ecosystem for a long time. The truth of this fact can be seen in the form of melting glaciers, polar ice fractures, monsoon changes, rising sea levels, ecosystems and deadly heat waves.
- Effects and diseases on human health
- Impact on agriculture and food security and food quality
- Impact on Ecology and Biodiversity
- Water stress, water insecurity
- melting glacier
- sea level rise
- increase in atmospheric and ocean temperatures
- impact on land resources
- weather events