File Name: list of causes and effects of global warming .zip
The potential future effects of global climate change include more frequent wildfires, longer periods of drought in some regions and an increase in the number, duration and intensity of tropical storms.
During the course of global warming, the energy balance and thus the temperature of the earth change, due to the increased concentration of greenhouse gases, which has a significant impact on humans and the environment. It is not scientifically possible to assign individual weather events to the current climate change, however, it can be statistically proven that global warming will increase the probability of extreme weather events. The indirect consequences of climate change, which directly affect us humans and our environment, include:.
Jump to navigation. And yes, it's really happening. Over the past 50 years, the average global temperature has increased at the fastest rate in recorded history.
Global climate change has typically occurred very slowly over thousands or millions of years. However, research shows that the current climate is changing more rapidly than shown in geological records. During the last ice age, the British Isles had many glaciers like the example above, located in present-day Iceland. The energy output of the Sun is not constant, it varies over time and this has an impact on our climate.
The period between these changes happen over 10s of s of years precession and axial tilt to more than s of s of years eccentricity. At other times, the ellipse is more pronounced so that the Earth moves closer and further away from the Sun as it orbits.
When the Earth is closer to the Sun our climate is warmer and this cycle also affects the length of the seasons. The tilt in the axis of the Earth is called its obliquity. This angle changes with time, and over about 41 years it moves from When the angle increases the summers become warmer and the winters become colder. The Earth wobbles on its axis, much like a spinning top that is slowing down.
This means that the North Pole changes where it points to in the sky. It impacts on the seasonal contrasts between hemispheres and the timing of the seasons. Greenhouse gases include carbon dioxide CO 2 , methane and water vapour. Water vapour is the most abundant greenhouse gas in the atmosphere, but it stays in the atmosphere for a much shorter period of time, just a few days. Methane stays in the atmosphere for about 9 years until it is removed by oxidation into CO 2 and water.
Ocean currents carry heat around the Earth. As the oceans absorb more heat from the atmosphere, sea surface temperature increases and the ocean circulation patterns that transport warm and cold water around the globe change.
The direction of these currents can shift so that different areas become warmer or cooler. As oceans store a large amount of heat, even small changes in ocean currents can have a large effect on global climate. In particular, increases in sea surface temperature can increase the amount of atmospheric water vapour over the oceans, increasing the quantity of greenhouse gas.
Above: Global ocean currents. Oceans store a large amount of heat, so that small changes in ocean currents can have a large effect on coastal and global climate. Over very long periods, plate tectonic processes cause continents to move to different positions on the Earth.
For example, Britain was near to the equator during the Carboniferous period, around million years ago, and the climate was warmer than it is today. The movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate. Large mountain chains can influence the circulation of air around the globe, and consequently influence the climate. For example, warm air may be deflected to cooler regions by mountains. During major explosive volcanic eruptions , large amounts of volcanic gas, aerosol droplets and ash are released.
Ash falls rapidly, over periods of days and weeks, and has little long-term impact on climate change. However, volcanic gases that are ejected into the stratosphere stay there for much longer periods. Volcanic gases such as sulphur dioxide can cause global cooling, but carbon dioxide has the potential to cause global warming. On a global scale, patterns of vegetation and climate are closely correlated. Vegetation absorbs CO 2 and this can buffer some of the effects of global warming. On the other hand, desertification amplifies global warming through the release of CO 2 linked with the decrease in vegetation cover.
This decrease in vegetation cover, via deforestation for example, tends to increase local albedo, leading to surface cooling. Albedo refers to how much light a surface reflects rather than absorbs. Generally, dark surfaces have a low albedo and light surfaces have a high albedo. Ice with snow has a high albedo and reflects around 90 per cent of incoming solar radiation. Land covered with dark-coloured vegetation is likely to have a low albedo and will absorb most of the radiation.
Nowadays, most of what is on the Earth stays on the Earth; very little material is added by meteorites and cosmic dust. Large impacts, such as Chicxulub, can cause a range of effects that include dust and aerosols being ejected high into the atmosphere that prevent sunlight from reaching the Earth.
These materials insulate the Earth from solar radiation and cause global temperatures to fall; the effects can last for a few years. A change in any one of these can lead to additional and enhanced or reduced changes in the others.
For example, we understand that the oceans can take carbon dioxide out of the atmosphere:. This in turn would contribute to a warming of the oceans. This process is called feedback.
A positive feedback accelerates a temperature rise, whereas a negative feedback slows it down. The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth, where they get stored in rocks, oceans and organisms, and then released back into the atmosphere. Temperature rises can affect agriculture, sea levels and the frequency of extreme weather incidents.
We can study past climate change by looking at the evidence in rocks, fossils and changes in the landscape. Carbon capture and storage involves capturing carbon dioxide at emission sources, such as power stations, then transporting and storing it underground.
What causes the Earth's climate to change? Discovering Geology — climate change. Circular orbit left and elliptical orbit right. Elliptical orbit — when the Earth is closer to the Sun, its climate is warmer. Quantity of greenhouse gases in the atmosphere Greenhouse gases include carbon dioxide CO 2 , methane and water vapour. Ocean currents and carbon dioxide content Changes in ocean currents Ocean currents carry heat around the Earth.
Ocean currents during the cretaceous. Plate tectonics and volcanic eruptions Over very long periods, plate tectonic processes cause continents to move to different positions on the Earth. Changes in land cover On a global scale, patterns of vegetation and climate are closely correlated. Meteorite impacts Nowadays, most of what is on the Earth stays on the Earth; very little material is added by meteorites and cosmic dust. You may also be interested in:.
The carbon story The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth, where they get stored in rocks, oceans and organisms, and then released back into the atmosphere. Impacts of climate change Temperature rises can affect agriculture, sea levels and the frequency of extreme weather incidents. Understanding carbon capture and storage Carbon capture and storage involves capturing carbon dioxide at emission sources, such as power stations, then transporting and storing it underground.
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What causes the Earth's climate to change?
Global climate change has typically occurred very slowly over thousands or millions of years. However, research shows that the current climate is changing more rapidly than shown in geological records. During the last ice age, the British Isles had many glaciers like the example above, located in present-day Iceland. The energy output of the Sun is not constant, it varies over time and this has an impact on our climate. The period between these changes happen over 10s of s of years precession and axial tilt to more than s of s of years eccentricity.
Global warming , the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries. Increases in greenhouse gases —i. Continued global warming is expected to impact everything from energy use to water availability to crop productivity throughout the world. Poor countries and communities with limited abilities to adapt to these changes are expected to suffer disproportionately. Global warming is already being associated with increases in the incidence of severe and extreme weather, heavy flooding , and wildfires —phenomena that threaten homes, dams, transportation networks, and other facets of human infrastructure.
PDF | Many researchers, engineers and environmentalists are expressing deep concerns about changes in the overall climate Because of the treacherous effects of global warming, some solutions must be devised. list is carbon dioxide.
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The effects of climate change span the physical environment , ecosystems and human societies. It also includes the economic and social changes which stem from living in a warmer world. Human-caused climate change is one of the threats to sustainability.
List of 10 Human Causes of Global Warming for Without major societal changes over the next decade, the planet will face a global environmental catastrophe that will cause or worsen war, poverty, water shortages and massive species die-offs, or so says a dire report issued in fall While the Intergovernmental Panel on Climate Change report was shocking and disturbing, all hope is not lost. Because humans are negatively impacting the environment, it would stand to reason, then, that we could generate a positive impact by altering some of our behavior.
Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. Climate change poses significant risks for a wide range of human and natural systems.