The issue of climate changes

Jump to Navigation Temperature Changes in Alaska The topic of climate change has attracted widespread attention in recent years and is an issue that numerous scientists study on various time and space scales. The temperature change varies from one climatic zone to another as well as for different seasons.

The issue of climate changes

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By Colin Ricketts - Tue, 19 Apr Or rather, the cause of climate change is. The fact that the Earth's climate has changed over its history - sometimes with cataclysmic consequences, called mass extinctionsfor many of the planet's inhabitants - is not disputed.

However, what has been the cause of fierce debate is whether or not human activity is currently causing a warming of the world. What climate change, man-made or not, is not - is short term weather.

These trends are much bigger and much longer term than a hot summer or a cold winter, we're thinking more of ice ages The issue of climate changes cold snaps when we talk about climate change. There are a number of reasons why the Earth's climate has changed historically. As the continents have moved through the process of plate tectonics they see changes in their climate, both as a result of the influence of the changing oceans and the size of landmass.

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Evidence for climate change This Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference is endorsed by a number of leading international professional organizations. This conference will provide a showcase for recent developments and advancements in design, construction, and safety Inspections of transportation Infrastructures and offer a forum to discuss and debate future directions for the 21st century.

The Sun also plays a role: The Earth's position relative to the sun is also not as constant as you might like to think, we're not in a circular orbit and the tilt of the planet also changes, causing changes in how all that heat and light from the Sun hits the planet's surface.

Volcanic activity too can change climate by putting large amounts of material into the Earth's atmosphere and thus reflecting heat away from the surface.


Such large eruptions are however rare, in fact, the phrase ''once in a blue moon'' probably comes from the change in the atmosphere caused by ash plumes from the eruption of Krakatoa in It's also been theorised that asteroid strikes on the planet have a similar effect, throwing material into the sky, and some scientists believe that the end of the age of the dinosaurs may have been caused by a giant asteroid hit.

The final reason why climates change - and this is where the controversy comes in - relates to human activityor anthropogenic global warming, which is what is meant when you read a news story about climate change.

Primarily, this has referred to the misleadingly named greenhouse effect. While a greenhouse warms the air by allowing in and retaining heat and not allowing in cooling air, greenhouse gases warm the planet by absorbing the Sun's heat and then reemitting it into the atmosphere.

The main greenhouse gases are: With the exception of CFC, which is man-made, these gases have historically existed in the atmosphere and there have been natural fluctuations for example volcanoes emit CO2 in their levels. The most common of these gases and thought to be the most significant greenhouse gas is water vapour but it's one on which human activity has little effect.

The issue of climate changes

As air warms it can hold more water, the increase in water vapour is said to be responsible for a possible amplification of global warming as the temperature warms.

Plants, which rely on CO2 to survive and which use and store it as they photosynthesise are said to be natural carbon sinks and over history natural variations in the levels of CO2 in the atmosphere are thought to have been balanced by their action. However, since around the middle of the 18th Century, human activity affecting the levels of carbon dioxide in the atmosphere has rapidly increased.

Since the industrial revolution took hold we not only burned more CO2-emitting fuelsfrom wood to coal to oil, but we have also massively reduced the amount of vegetation on the planet. Using 10 indicators, seven temperature measures and three ice or snow cover measures, they said that each of the last three decades has been warmer than the last and successively broken temperature records.

Action on Climate Change The reason why climate change has become so controversial is because people are being asked to make massive lifestyle changes in their lifestyle to help mitigate the effects of man made global warming. If action on climate change amounted to legislation to outlaw, say, wooden pencils then, while scientists may debate the rights and wrongs of the issue, you can almost be sure that our media would not be filled with the dispute.Palm oil is a type of edible vegetable oil that is derived from the palm fruit, grown on the African oil palm tree.

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Oil palms are originally from Western Africa, but can flourish wherever heat and rainfall are abundant. This article is about climate change and climate change is expected to affect particular ecosystems, including tundra, mangroves, coral reefs, and caves.

Climate change is a major threat to agriculture. Where, how and when we grow food is vitally connected to our climate's normal patterns.

Worldwide, farmers are struggling to keep up with shifting weather patterns and increasingly unpredictable water supplies.

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“The emissions issue and climate policy issues have the same problem within the Coalition of bitterly entrenched views that are actually sort of more ideological views than views based, as I.

At its 43rd Session (Nairobi, Kenya, 11 - 13 April ), the IPCC decided to prepare a special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.

Climate change, periodic modification of Earth’s climate brought about as a result of changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors within the Earth system.

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