8/10/ · Even before starting to work on your global warming essay, it is prudent to create a good structure. The goal of the structure is ensuring you know what will come at what section and creating a smooth flow of ideas from the start to the end. Here is a sample structure of a great short essay on global warming for students 24/7/ · So, Global warming refers to the gradual rise in the overall temperature of the atmosphere of the Earth. There are various activities taking place which have been increasing the temperature gradually. Global warming is melting our ice glaciers rapidly. This is Estimated Reading Time: 3 mins 19/11/ · Global Warming Is A Threat Essay Words | 7 Pages Global warming has been a controversial issue since the first publication of global warming, “Worlds in the Making,” by Svante Arrhenius in This topic is discussed in multiple areas of life, including politics, at the dinner table, and among scientists in a laboratory
Essay example on global warming | Examples and Samples
Global warming and climate change refer to an increase in average global temperatures. Natural events and human activities are believed to be contributing to an increase in average global temperatures. This is caused primarily by increases in greenhouse gases such as Carbon Dioxide CO 2. A warming planet thus leads to a change in climate which can affect weather in various ways, as discussed further below. As explained by the US agency, the National Oceanic and Atmospheric Administration NOAAthere are 7 indicators that would be expected to increase in a warming world and they areand 3 indicators would be expected global warming essay introduction decrease and they are :.
The term greenhouse is used in conjunction with the phenomenon known as the greenhouse effect. Six main greenhouse gases are carbon dioxide CO 2methane CH 4 which is 20 times as potent a greenhouse gas as carbon dioxide and nitrous oxide N global warming essay introduction Oplus three fluorinated industrial gases: hydrofluorocarbons HFCsperfluorocarbons PFCs and sulphur hexafluoride SF 6. Water vapor is also considered a greenhouse gas. However, if the greenhouse effect becomes stronger, then more heat gets trapped than needed, and the Earth might become less habitable for humans, plants and animals.
Carbon dioxide, though not the most potent of greenhouse gases, is the most significant one. Human activity has caused an imbalance in the natural cycle of the greenhouse effect and related processes.
In addition to the natural fluxes of carbon through the Earth system, anthropogenic human activities, particularly fossil fuel burning and deforestation, are also releasing carbon dioxide into the atmosphere. Also, by clearing forests to support agriculture, global warming essay introduction, we are transferring carbon from living biomass into the atmosphere dry wood is about 50 percent carbon, global warming essay introduction.
The result is that humans are adding ever-increasing amounts of extra carbon dioxide into the atmosphere. Because of this, global warming essay introduction, atmospheric carbon dioxide concentrations are higher today than they have been over the last half-million years or longer. In a similar way, greenhouse gases are essential for our planet; the planet may be able to deal with slightly increased levels of such gases, but too much will affect the health of the whole planet. The other difference between the natural carbon cycle and human-induced climate change is that the latter is rapid.
This means that ecosystems have less chance of adapting to the changes that will result and so the effects felt will be worse and more dramatic it things continue along the current trajectory. Recent warming has been shown to be due to human industrialization processes.
John Cook, writing the popular Skeptical Science blog, summarizes the key indicators of a human finger print on climate change:. This graph, based on the comparison of atmospheric samples contained in ice cores and more recent direct measurements, provides evidence that atmospheric CO 2 has increased since the Industrial Revolution:.
The above covers hundreds of thousands of years and shows how atmospheric CO 2 levels have dramatically increased in recent years. If we zoom in on just the past years, we see the following:. com link no longer available : To facilitate assessments of long term trends, climatologists compare the mean for a base period with the annual mean. Differences between the annual mean and baseline mean are called anomalies.
GISS uses the - period for their baseline period. They use the difference between the annual mean and the baseline mean global warming essay introduction determine the global temperature anomaly for the year.
I updated the global warming essay introduction he provided to include recently updated data up to In the - period, the temperature anomaly was consistently negative. In contrast, global warming essay introduction, the since the anomaly has been consistently positive. The temperature anomaly And, as Sir David Attenborough explains, natural variability alone does not explain recent temperature rise:. As well as the links above, see also Skeptical Sciencewhich, while examining the arguments of global warming skepticism, global warming essay introduction, provides information on causes of anthropogenic global warming.
In different parts of the world, there have been various weather events that at first thought would question global warming. For example, some regions have experienced extremely cold winters sometimes record-breakingwhile others have experienced heavy rain, etc.
The confusion that sometimes arises is the difference between climate change and weather patterns. Weather patterns describe short term events, while climate change is a longer process that affects the weather. A warming planet is actually consistent with increasing cold, increasing rain and other extremes, as an overall warmer planet changes weather patterns everywhere at all times of the year.
As an aside, those crying foul of global warming claims when going through extremely cold weather in Europe for example inlater found their summers to be full of heat waves. The point here is that a specific short period such as a cold winter — or even a hot summer — is not proof alone that global warming has stopped or increased ; short term variability can mask longer term trends, global warming essay introduction.
This means, for example, increasing temperatures can actually mean more snowfall — at least until it becomes too warm for significant snowfall to happen. The additional concern, as meteorology professor Scott Mandia explains, it can take decades for the climate temperatures to increase in response to increased greenhouse gas emissions.
So up until now, perhaps it has been easier for skeptics to deny climate change is occurring or that humans are responsible. It was global warming essay introduction likely that human influence has been the dominant cause of the observed warming since the midth centuryas summarized by the IPCC, global warming essay introduction.
As their fifth report started to come out, a number of climate skeptics and media outlets were arguing that the slowdown shown in surface temperatures in recent years proved global warming had stopped or paused.
Yet, this slowdown was in surface temperatures only even though the overall trend using a more longer period which is more valid in climate change analysis showed an increase in temperatures. Two simple graphs help illustrate this:. The next graph is an animation from Skeptical Science showing how time-frames to interpret climate data is significant:. For further information on the above see also Does the global warming pause mean what you think it means?
As John Cook, creator of the graphic above says see above linkJust as it takes time for a cup of coffee to release heat global warming essay introduction the air, so to it takes time for the ocean to release its heat into the atmosphere.
Indeed, as this chart also shows, global warming essay introduction, the warming in the oceans has been occurring for quite some time:. A summary of the video here says that. Rapidly rising greenhouse gas concentrations are driving ocean systems toward conditions not seen for millions of years, with an associated risk of fundamental and irreversible ecological transformation.
Changes in biological function in the ocean caused by anthropogenic climate change go far beyond death, global warming essay introduction, extinctions and habitat loss: fundamental processes are being altered, community assemblages are being reorganized and ecological surprises are likely. the Arctic has been heating up, and studies show that is happening at two to three times the global average. And as you would expect, when the reflective ice and snow layer is stripped away, it leaves a dark blue sea.
Now, what does the effect of the dark blue sea being exposed have on the Arctic area? But the dark blue of the exposed sea absorbs the rays, aiding the heating process. it has been constantly hotter than normal. Source: NOAA National Climatic Data Center, State of the Climate: Global Analysis for Annualpublished online Decemberretrieved on January 25, For decades, greenhouse gases, such as carbon dioxide have been increasing in the atmosphere. But why does that matter?
Each of the last three decades has been much warmer than the decade before. At the time, global warming essay introduction, the s was the hottest decade on record. In the s, every year was warmer than the average of the previous decade. The s were warmer still. At the end of the s, the World Meteorological Organization WMO had noted that not only was the s the warmest decade but at the time, the s was the warmest century during the last 1, years.
It is the rapid pace at which the temperature will rise that will result in many negative impacts to humans and the environment and this why there is such a world-wide concern.
Climate scientists admit that the chances of the world keeping average global temperature at current levels are not going to be possible humanity has done little to address things in the past couple of decades that these concerns have been known about.
So, now, there is a push to contain temperature rises to an average 2°C increase as an average, this means some regions may get higher temperatures and others, lower. Even just a 2°C increase can have impacts around the world to biodiversity, agriculture, the oceans etc detailed further below. But in the lead up to important global climate talks at the end ofsome delegates are skeptical that temperature rises can be contained to a 2°C rise or C0 2 levels of ppm.
The poster shows that a four degree average rise will not be spread uniformly across the globe. The land will heat up more quickly than the sea, and high latitudes, particularly the Arctic, will have larger temperature increases. The average land temperature will be 5. Agricultural yields are expected to decrease for all major cereal crops in all major regions of production. Most scientists believe that the warming of the climate will lead to more extreme weather patterns such as:.
While many environmental groups have been warning about extreme weather conditions for a few years, the World Meteorological Organization announced in Global warming essay introduction that Recent scientific assessments indicate that, as the global temperatures continue to warm due to climate change, the number and intensity of extreme events might increase.
The WMO also notes that New record extreme events occur every year somewhere in the globe, but in recent years the number of such extremes have been increasing. The WMO limits the definition of extreme events to high temperatures, low temperatures and high rainfall amounts and droughts. Global warming essay introduction U. Mentioned further above was the concern that more hurricanes could result. The link used global warming essay introduction from the environmental organization WWF, global warming essay introduction, written back in In the Caribbean many lives were lost and there was immense damage to entire cities.
In the U. many lives were lost as well, some of the most expensive damage resulted from the successive hurricanes. In its wake, scientists have reiterated that such super-storms may be a sign of things to come.
Global warming may spawn more super-stormsInter Press Service IPS notes, global warming essay introduction. This increases the odds of major storms. There is abundant evidence of an unprecedented number of severe weather events in the past decade, [professor of biological oceanography at Harvard University, James] McCarthy says. InHurricane Mitch killed nearly 20, people in Central America, and more than 4, people died during disastrous flooding in China. Bangladesh suffered some of its worst global warming essay introduction ever the following year, as did Venezuela.
Europe was hit with record floods inglobal warming essay introduction, and then a record heat wave in More recently, Brazil was struck by the first-ever recorded hurricane in the South Atlantic last March. Weather records are being set all the time now. Historical weather patterns are becoming less useful for predicting the future conditions because global warming is changing ocean and atmospheric conditions. Looking at as a whole year revealed a variety of extreme weather events.
These lists were compiled and voted on during the first week of December. Significant events, such as the extreme winter weather in Europe and the flooding in Australia occurred after this date.
Global Warming 101 - National Geographic
, time: 3:04Climate Change and Global Warming Introduction — Global Issues
8/10/ · Even before starting to work on your global warming essay, it is prudent to create a good structure. The goal of the structure is ensuring you know what will come at what section and creating a smooth flow of ideas from the start to the end. Here is a sample structure of a great short essay on global warming for students 7/8/ · You may describe some of the theories in your environmental pollution and global warming essay. Today, the Earth absorbs 70% of all radiation received from the Sun and there is a need to reduce this amount. Astronomer Roger Ancel suggested placing millions of lenses with a diameter of 60 cm around the Earth to reflect the sun rays 24/7/ · So, Global warming refers to the gradual rise in the overall temperature of the atmosphere of the Earth. There are various activities taking place which have been increasing the temperature gradually. Global warming is melting our ice glaciers rapidly. This is Estimated Reading Time: 3 mins
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