The above covers hundreds of thousands of years and shows how atmospheric CO2 levels have dramatically increased in recent years.
As well as the links above, see also Skeptical Science, which, while examining the arguments of global warming skepticism, provides information on causes of anthropogenic global warming.Doesna€™t recent record cold weather disprove Global Warming?In different parts of the world, there have been various weather events that at first thought would question global warming. One of John Brunoa€™s colleagues, Ove Hoegh-Guldberg, talks about the impact climate change will have on ocean ecosystems. As Salmons explains,the Arctic has been heating up, and studies show that is happening at two to three times the global average. Scientists have found that oceans are able to absorb some of the excess CO2 released by human activity. Some species may benefit from the extra carbon dioxide, and a few years ago scientists and organizations, such as the European Project on OCean Acidification, formed to try to understand and assess the impacts further.One example of recent findings is a tiny sand grain-sized plankton responsible for the sequestration of 25a€“50% of the carbon the oceans absorb is affected by increasing ocean acidification.
It is feared that globally, there will be mass migrations in the future as climate change makes conditions worse in some regions of the world, and these challenges will play itself out on a much larger scale, with much more human movement. In some cases, improved agricultural techniques may help, such as rainwater harvesting and drip irrigation.
Lauren Swank on Flooding and Mitigation Strategies in Wayne Countydchu13 on The Door to HellCarly S.
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As first reported in ScenceDaily, geographers have projected temperature increases due to greenhouse gas emissions to reach a not-so-chilling conclusion: climate zones will shift and some climates will disappear completely by 2100. The eastern United States has a mild, humid, temperate climate, while the western United States has a dry climate, right? Well, according to climate models, global warming could change our current world climate zones, which would affect where crops are grown and even drive some plant and animal species to extinction, all in the next 100 years.
The American Geophysical Union and the American Meteorological Society contributed to the information contained in the TV portion of this report. BACKGROUND: A new study by researchers at the University of Wisconsin-Madison and the University of Wyoming predicts that by the year 2100, many of today's familiar climates will be replaced by climates unknown in today's world, if current rates of carbon dioxide (CO2) and other greenhouse gas emissions continue. ABOUT THE STUDY: The climate modeling study translates CO2 and other greenhouse gas emission levels into climate change. CARBON IN THE AIR: Carbon, in the form of CO2, is a greenhouse gas continually released into the atmosphere as a direct result of human activities. ABOUT GLOBAL WARMING: Global warming refers to an increase in the earth's average temperature -- which has risen about 1 degree F over the past 100 years. With the ever-increasing temperature of the Earth’s atmosphere from as early as the late 19th century, nature is sending us signals to do something about global warming. On a lighter side , I’m glad that artists are doing their part and taking a stand to highlight the effects of global warning while using this as a platform to express their creativity. In joining the celebration of World Environment Day on the 5th of June, I’d like to showcase just some of the most unique global warming warning posters out there on the Web. If we a€?zooma€? in on just the past 250 years, we see the following:Global CO2 emissions, 1751a€“2010, Carbon Dioxide Information Analysis Center (CDIAC), 2013, last accessed February 1, 2015. For example, some regions have experienced extremely cold winters (sometimes record-breaking), while others have experienced heavy rain, etc.The confusion that sometimes arises is the difference between climate change and weather patterns. A summary of the video here says thatOve Hoegh-Guldberg NCSE talk on climate change impacts on ocean ecosystems, Climate Shifts, January 21, 2011. This rising temperature in the Arctic has served to reduce the regiona€™s floating ice layer by more than 20%. This tiny plankton plays a major role in keeping atmospheric carbon dioxide (CO2) concentrations at much lower levels than they would be otherwise so large effects on them could be quite serious.Other related problems reported by the Inter Press Service include more oceanic dead zones (areas where there is too little oxygen in the sea to support life) and the decline of important coastal plants and forests, such as mangrove forests that play an important role in carbon absorption. Some also believe genetically modified crops may be essential to deal with changing climates.
Tropical highlands and polar regions may be the first to disappear, and large swaths of the tropics and subtropics will reach even hotter temperatures. With levels of CO2 continuing to rise, Williams suggests areas of the world that currently have a tropical climate will be much warmer and drive vegetation and animal life north.

Williams said the same thing will happen, potentially driving plant and animal species into extinction if they can't adapt to the changes fast enough. The new global climate models for the next century forecast the complete disappearance of several existing climates currently found in tropical highlands and regions near the poles, while large swaths of the tropics and subtropics may develop new climates unlike anything seen today. It uses average summer and winter temperatures and precipitation levels to map the differences between climate zones today and in the year 2100. A warmer earth may lead to changes in rainfall patterns, and a rise in sea level, for example, as polar glaciers melt. We humans have a tendency to neglect obvious signs and this is probably why warning messages of global warming are only surfacing in the recent years when we could have intervened a hundred years ago. As people become more aware of the dangers and complications that will come from global warming, the demand for such awe-inducing posters will certainly rise. Weather patterns describe short term events, while climate change is a longer process that affects the weather. 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? As the Global Biodiversity Outlook report explains, the water is some 30% more acidic than pre-industrial times, depleting carbonate ions a€” the building blocks for many marine organisms.In addition, a€?concentrations of carbonate ions are now lower than at any time during the last 800,000 years.
Geographer Jack Williams says, based on his new analyses of climate forecasting models, we're headed for major change -- fast. Williams believes these changes would lead to the spreading of Malaria northward, more catastrophic natural disasters and overall greater human health risks.
The most severely affected parts of the world span both heavily populated regions, including the southeastern United States, southeastern Asia, and parts of Africa, as well as known hotspots of biodiversity, such as the Amazonian rainforest and South American mountain ranges. The concentrations of atmospheric CO2 has already increased by about 30% since the dawn of the industrial revolution in the 19th century.
Some of this rise is due to the greenhouse effect: certain gases in the atmosphere trap energy from the sun so that heat can't escape back into space. From these art pieces, we can briefly appreciate the beauty and vulnerability of Mother Nature, and her impending wrath if we continue to disrespect Earth.
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.To get an idea of how looking at short term changes only can lead to a conclusion that global warming has stopped, or doesna€™t exist, see Alden Griffitha€™s has global warming stopped?(As an aside, those crying foul of global warming claims when going through extremely cold weather in Europe for example in 2010, later found their summers to be full of heat waves. Well, the ice and snow layer reflects the majority of the suna€™s rays harmlessly back into space. The impacts on ocean biological diversity and ecosystem functioning will likely be severe, though the precise timing and distribution of these impacts are uncertain.a€? (See p.
They are among the most vulnerable to climate change, partly because in many countries they make up the larger share of the agricultural work force and partly because they tend to have access to fewer income-earning opportunities. The predicted changes also anticipate dramatic ecological shifts, with extensive effects on large segments of the Earth's population. Most of this increase comes from the use of fossil fuel -- coal, oil and natural gas -- for energy, but approximately one-quarter of it can be attributed to changes in land use, such as the clearing of forests and the cultivation of soils for food production.
Without the greenhouse effect, the earth would be too cold for humans to survive, but if it becomes too strong, the earth could become much warmer than usual, causing problems for humans, plants and animals. Natural events and human activities are believed to be contributing to an increase in average global temperatures. 58 of the report.)Although millions of years ago CO2 levels were higher, todaya€™s change is occurring rapidly, giving many marine organisms too little time to adapt. Women manage households and care for family members, which often limits their mobility and increases their vulnerability to sudden weather-related natural disasters. The above chart shows total costs for action on climate change by 2100 to be about $11 trillion while damages will be about $8 trillion.
Natural sources of atmospheric carbon include gases emitted by volcanoes, and respiration of living things. So up until now, perhaps it has been easier for skeptics to deny climate change is occurring or that humans are responsible.Has global warming paused due to recent surface temperature drops?As the IPCCa€™s fifth major report draws to a conclusion in 2013 it notes that scientists have increased their certainty of human-induced warming to 95%.
Drought and erratic rainfall force women to work harder to secure food, water and energy for their homes.

It was a€?extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th centurya€?, as summarized by the IPCC.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. Some of these creatures play a crucial role in the food chain, and in ecosystem biodiversity. By 2200, these numbers shoot up (over $30 trillion if action taken, or over $70 if no action taken). 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.
The second one is on the impact on women in Vietnam.Back to topGreenhouse gases and emissions resulting from human activityEvery few years, leading climate scientists at the UNa€™s Intergovernmental Panel on Climate Change (IPCC) have released major, definitive reports detailing the progress in understanding climate change. Human activity has caused an imbalance in the natural cycle of the greenhouse effect and related processes. 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.The climate has always varied in the past. As greenhouse gas emissions from energy production, industry and vehicles have increased, temperatures have climbed, most notably since the late 1970s.
However, the more recent period suggests the rich country emission reductions are not sustainable. How is this any different?Throughout Eartha€™s history the climate has varied, sometimes considerably. Furthermore, it looks worse considering a large part of this decrease is because of the collapse of the Soviet Union.
The land will heat up more quickly than the sea, and high latitudes, particularly the Arctic, will have larger temperature increases.
For example:In terms of historical emissions, industrialized countries account for roughly 80% of the carbon dioxide buildup in the atmosphere to date. But once the carbon cost of imports have been added to each country, and exports subtracted a€“ the true change has been an increase of 7%.
This is exemplified by the large contrasts in per capita carbons emissions between industrialized and developing countries. If Russia and Ukraine a€“ which cut their CO2 emissions rapidly in the 1990s due to economic collapse a€“ are excluded, the rise is 12%.a€¦Much of the increase in emissions in the developed world is due to the US, which promised a 7% cut under Kyoto but then did not to ratify the protocol.
Emissions within its borders increased by 17% between 1990 and 2008 a€“ and by 25% when imports and exports are factored in.In the same period, UK emissions fell by 28 million tonnes, but when imports and exports are taken into account, the domestic footprint has risen by more than 100 million tonnes. Europe achieved a 6% cut in CO2 emissions, but when outsourcing is considered that is reduced to 1%.a€¦The study shows a very different picture for countries that export more carbon-intensive goods than they import.
China, whose growth has been driven by export-based industries, is usually described as the world's largest emitter of CO2, but its footprint drops by almost a fifth when its imports and exports are taken into account, putting it firmly behind the US. In 1998, Hurricane Mitch killed nearly 20,000 people in Central America, and more than 4,000 people died during disastrous flooding in China.
By halting the loss of green and blue carbon, the world could mitigate as much as 25% of total greenhouse gas (GHG) emissions with co-benefits for biodiversity, food security and livelihoods (IPCC 2007, Nellemann et al. Significant events, such as the extreme winter weather in Europe and the flooding in Australia occurred after this date.
Per person (a€?per capitaa€?), however, Chinaa€™s emissions are much smaller.Until recently, the United States was the worlda€™s largest emitter of greenhouse gases.
China faced locust swarms during July.22010 as [near] warmest on recordCalendar YearAccording to NOAA, the globally-averaged temperature for 2010 will finish among the two warmest, and likely the warmest, on record. Hemispheric Snow RetreatJanuary through JuneDespite December 2009 having the second-largest snow cover extent of the satellite record (mid-1960s), the melt season was ferocious, contributing to spring floods in the Northern U.S.

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