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climate change

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by

Hardeep Bains

on 16 January 2013

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Transcript of climate change

Climate change is a change in the weather conditions that a given region experiences over a long period of time. Climate change on a global scale includes changes in temperature, shifts in wind patterns and changes in precipitation. How is the climate in the Arctic changing? What causes Climate Change? Climate Change
in the
Arctic * seabirds such as ivory gulls and little auks are very negatively impacted by the decline of sea ice
* The ivory gull is directly associated with sea ice for most of its life, nesting and breeding on rocky cliffs that offer protection from predators & flying to the nearby sea ice to fish through cracks in the ice
* Major declines have already been observed in ivory gull populations, including an estimated 90% reduction in Canada over the past 20 years
* a cause of this dramatic decline is not only because of climate change, but also birds are not finding enough food to sustain themselves and their children.
* seabirds have fewer breeding cycles, slower chick development and a decrease in nesting success thus if sea level rises or a storm hits, these species will very likely be in danger of immediate death
* seabirds such as auks have managed to adopt the effects of warming surface waters in the Greenland Sea by altering their diet and extending the period of savaging trips to sea. What is Climate Change? Humans are the major causes of climate change in the arctic. We have continued to add carbon dioxide, and other greenhouse gasses to the atmosphere which have persistently changed climate and also increased average global temperatures. Changes range from rising temperatures to loss of sea ice and melting of the Greenland ice sheet. Secondarily humans have cleared land, which has increased carbon dioxide, methane and other heat trapping gasses in the atmosphere. The arctic and the ocean have begun to disintegrate and could potentially release methane especially through the thawing of permafrost and methane clatters. Minor factors that cause climate change in the arctic are unusual wind patterns, or shifting water circulation. (Such as increase flow of warm fresh water to the Arctic Ocean from rivers.) Therefore, changes in the arctic not only affect the land masses but, also target species living there and down south. * polar bears give birth and hunt on sea ice and they need it to travel from one region to another.
* Survival of mothers and cubs in the spring depends on the mothers’ hunting success, which is depended on the strength and amount of sea ice
* Less winter sea ice means that female polar bears have to go longer without food, which impacts their fat stores and their ability to reproduce
* There has been a steep drop in cub survival rates.
* in the early 1980s, the population of polar bears of Western Hudson Bay near Churchill in Manitoba, Canada dropped 22% because of the shorter hunting seasons
* It's believed that about 60% of the Polar Bears population live in Canada
* scientists estimated that there might be 20,000 to 25,000 polar bears left in the world
* polar bears are slowly becoming extinct
* polar bears are starting to drown because they can't find a stable place to stop and rest

DID YOU KNOW?
Scientists believe that we still have time to save polar bears if we significantly reduce greenhouse emissions within the next few years. They predict it will take 30 to 40 years to reverse the climate change Top 3 animals affected
by climate change
in the
Arctic * Certain seal species that rarely come to land, such as the harp seal, spotted seal and the ringed seal depend on Arctic sea ice.
* sea ice provides a home for resting, giving birth and raising pups and also provides feeding ground for some seal
* When appropriate ice for birthing cannot be found, seals may give birth in the water and the pups die.
* In 2010, 90% of harp seal pups born in the Gulf of St. Lawrence died due to lack of ice
* Since natural habitats are slowly being destroyed by the climate changes, seals start not to breed as often and they start moving to other locations in the hopes of finding food and shelter there
* Each spring, off the East Coast of Canada, hunters take their boats across the sea in the attempts to kill as many baby seals as possible. Most seal pups are too young to escape and are either shot or hit with a spiked wooden club called a hakapik.
* the most seal hunting takes place in Canada, therefore it is legal
* The International Fund for Animal Welfare (IFAW) strives to protect these vulnerable animals Weather and climate play a significant role in people's health and daily lives. Changes in climate affect the average weather conditions that we are accustomed to.
Warmer average temperatures will likely lead to hotter days and more frequent and longer heat waves. This could increase the number of heat-related illnesses and deaths.
Heat waves can lead to heat stroke and dehydration, and are the most common cause of weather-related deaths.
Excessive heat is more likely to impact populations in northern latitudes where people are less prepared to cope with excessive temperatures.
Increases in the frequency or severity of extreme weather events such as storms could increase the risk of dangerous flooding, high winds, and other direct threats to people and property.
Which will then reduce the availability of fresh food and water and
interrupt communication, utility, and health care services. How does Climate Change affect humans? Most climate models(graphs) show near to complete loss of sea ice in the Arctic in September (the warmest time of year) by 2040. This is another reason why it is important to stop climate change and global warming. The importance of stopping climate change. WWF and The Coca-Cola Company are working together to improve energy efficiency and reduce emissions in Coca-Cola's manufacturing operations, including those of over 300 independent bottlers. Together, WWF and Coca-Cola are working to achieve the company’s goals of growing the business, not the carbon emissions. The solutions that these companies are spreading world wide are to use the selective cutting when cutting tress,reducing, reusing and recycling products that you buy,walking or take public transport where possible so that you use a car less often and insulate your home better so that you do not need to use so much energy to heat it up. It is important to stop the climate change because of the available habitat for species such as the polar bear, is reducing every year which relies on the presence of the Arctic sea ice.This will effect the animals ability to hunt, which is the only way for them to survive. Once a specific specie of animal disappears, the whole food chain will collapse. We all know that every living thing relies on another living matter. In the end, humans will suffer. It is believed that the Arctic is vulnerable mainly because of feedback loops- high reflection of solar radiation, but as sea ice and glaciers melt, the darker ocean water begins to absorb, instead of reflecting solar radiation, which further increases temperatures. Together we can make a difference
and
save the planet as well as
the living creatures
on it! > Climate change is faster and more severe in the Arctic than in most parts of the world
> Changes in the climate in the Arctic includes rising temperatures, loss of sea ice, and melting of Greenland ice sheets
>After NASA’s Gravity Recovery and Climate experiment, results show that Greenland has lost about 150 to 250 cubic kilometers of ice per year between 2002 to 2006
> Arctic sea ice has decreased 14% since the 1970s
> In 2012, Arctic sea ice extent hit the lowest level ever recorded, breaking the previous record set in 2007
> By summer 2040, scientists predicts that sea ice will be limited to only the northern coast of Greenland and Canada. This would be the last ice covered area
> Shiny ice and snow reflect a high amount of the sun's energy into space
> As the Arctic loses snow and ice, bare rock and water absorbs more and more of the sun’s energy, making it even more warmer in the Arctic
> Warm air carries heat to the permafrost around the Arctic, and melts it

NOT SO FUN FACT:
Did you know, that the Arctic region is getting warmer at a rate of almost twice the global average Polar bears Seals Baby Harp seals Mama harp seal
&
Baby harp seal Hunting of seals Ivory Gulls: Little Auks: Seabirds Company's helping stop
climate change:
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