The increase in average global temperatures due to the increase in greenhouse effect by the increase in the greenhouse gases creates Global warming and climate change in the environment. The average temperature of the world is increasing at the fastest rate as compared to the recorded history. And experts see the trend is accelerating at a high rate.
Human emission has contributed the GHG in the atmosphere by using chemicals and machines, mostly after the industrial revolution when most of the work done by machines, the amount of greenhouse gases (GHG) in the atmosphere has greatly increased and removal of natural sinks such as deforestation and oceanic pollution.
Global warming is not the new phenomena but it was happened in all the time and everywhere. Ancient warming was natural and it was due to natural phenomena by volcanic eruption and thawing of frozen methane. Natural events like volcanic eruptions, forest fires. Methane release from thawing of permafrost and from cattle, wet lands and anthropogenic sources of exhausts from all kinds of combustion, greenhouse gases produce by industrial production, water lodging activities like paddy cultivation artificial wet lands and deforestation.
People response towards Global Warming
Scientific understanding of the Global Warming has been increasing. People response towards the global warming depends upon the awareness of the people regarding climate change and its effects to their health. The more people know about global warming, their thinking seems to go, the more they will feel personally responsible for it, and also be concerned about it. Research on educational attainment and income indicates that persons of higher socioeconomic status are less likely to perceive climate change as risky, members of the mass public are no more than casually aware of the key controversies and concepts involved in it. However information about global warming, though still far from complete, has recently become both more widely available and more dramatic.
Q: What causes global warming?
Global warming occurs when atmosphere hold and absorb greenhouse gases (GHG) and other air pollutants and the sunlight and solar radiation that have bounced off the earth’s surface. Mostly this radiation would go back into space, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. This heat will make the climate of the earth more extreme and unpredictable. That’s what’s known as the greenhouse effect.
How global warming linked to extreme weather
The earth has warmed by an average of 1 degree Celsius. Scientists agree that the earth’s rising temperatures are fueling longer and hotter heat waves, more frequent droughts, heavier rainfall, and more powerful hurricanes. Unfortunately, rising temperature does not mean that we will get nicer weather around the globe. The impacts of global warming are being felt across the globe. Heat waves have caused tens of thousands of deaths around the world in recent decades. And in an alarming sign of events to come, Antarctica has been losing about 134 billion metric tons of ice per year since 2000. This rate could accelerate if we keep burning fossil fuels at our current pace, some experts say. Causing sea levels to rise several meters over the next 50 to 150 years.
Effects of global warming
Concentration of the GHG’s in environment creates high temperature which disturbs the earth’s climate and this increases in temperature melts glaciers, this early snowmelt and severe droughts will cause more dramatic water shortages and increase the risk of wildlife in the American West.
Melting glaciers and the severe heat rise sea levels will lead to coastal flooding on the Eastern Seaboard,on the other hand early snowmelt leads to the landslides and flooding especially in Asia , and in other areas such as the Gulf of Mexico and Florida.
Agriculture and fisheries will be destroyed by this changing climate because the new pests, heat waves, heavy downpours, and increased flooding, all those factors will damage or destroy forests, farms, and cities.
Pollen producing ragweed will be more common due to this allergies, asthma, and infectious disease outbreaks, higher levels of air pollution and the spread of conditions favorable to harmful insects, pathogens and mosquitoes
Direct physiological and physical effect by heat and cold and on the behavior of the people, high heat affects several in Indian states during the early 2015 which resulted several deaths in heat stroke, skin damage is caused by continues exposure, adverse effect on immune system of the body and skin cancer, eye disease, cardio vascular diseases are more common and increases deaths because of heat stroke, temperature increases blood pressure, viscosity and pulse, and increased stress and malnutrition also adversely affect the health.
Global warming can severely affect the health of living beings. Most of the agriculture loss and less productivity are a direct consequence of heating up of earth, this can cause a decline in human body resistance to viruses and infections. Global warming may also transfer various diseases to other regions as people will shift from one place to another. Warmer oceans may lead to severe cholera outbreaks and harmful infections in some types of sea food.
Global warming is also affecting animals. As like the people the animals are also affected by the global climate change, they need to move to cooler places in order to survive and it has been seen in various places in the world. Fishes in the North Sea have been reported to move other places. The impacts on species are becoming more, which such an extent that the movements of the species can be used as a sign of a warming world. It can be seen as a silent witnesses of the swift changes being inflicted on the Earth. Experts predict that global warming is gradually damaging the ecosystems of various parts and disturbs the species and is playing a very unconstructive role in making them extinct.
Pros and cons of global warming
Increasing sea level causes flooding in coastal areas and low lying lands.
The productivity goes down in Mediterranean climatic regions because precipitation get reduced soil moisture levels, such as Southern Europe, Western Australia and South Africa,
Less precipitation has Increased desertification
Food shortages has resulted by the abrupt weather changes.
Shortage of water in already water scarce areas.
Shortage of food has created Starvation in some parts of the world, on the other hand malnutrition is one of the biggest impact which resulted by the shortages of food.
Frequency of catastrophic events such as storms, flooding and typhoons events is increased by the extreme weather.
Epidemics diarrhea such as cholera, dengue and malaria is the product of changes weather.
Increased allergy and asthma is more common in cities, their rates increases due to earlier blooming plants.
Deaths may occur due to heat waves.
Crop failure due to changes in moisture of the atmosphere and pest out break.
Extinction of plants and animals.
Loss of plant and animal Habitants.
People of the poor or low lying countries are emigrated to rich and wealthier nations.
Increased air pollution
Permanent loss of glaciers and ice sheets.
Destruction of the Cultural heritage sites rapidly by increased extremes of weather pattern
Acidification of oceans
Forest fires can be occurred by earlier drying of forests.
Economical imbalance and increased violence
Some of the parts get more land for cultivation like Antarctic, Arctic, Siberia and other frozen regions of the earth and more plant growth in favorable conditions.
Northern Europe, Canada, Russia get benefited with increased harvest such as cereals, sugar beet, hay and potatoes.
More sea transportation ways opens such as Canada’s North West passage. Less energy and fuel requirement for warming up.
Decrease in death due to freezing o Longer the growing season could increase the agricultural preduction