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Impact of global warming on arctic region
Polar bear and climate change research paper
Climate change and its affect on the arctic essay
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Recommended: Impact of global warming on arctic region
Sophie Allen
Professor McIlrath
OCE 2001
20 May 2014
Arctic Report
According to the National Oceanic and Atmospheric Administration, 2013 brought an increased arrival of fish and bottom dwelling species to the Arctic waters (“Marine Fishes of the Arctic” sec. 2). While this information was only released in the recent months, scientists concerned with the outlook of the Artic have been pondering the future of this environment for decades. In predicting the future arrival of new species of fish and other wildlife, scientists could have hypothesized that: If the global climate continues to increase, then the Artic environment will become home to new species of fish and other bottom-dwelling creatures, as the warmer waters will encourage their migration. Through measurements of the global climate, as well as observations and samplings of the water, scientists were able to compare the change in climate to the addition of new species in Artic waters. Findings conclude that within benthic communities, deviations in climate have caused species to shift, as well as influencing the configuration of their communities (“Artic Benthic Communities” sec. 1). With regards to fish, it was found that species are expanding their ranges as the Arctic waters increase in temperature, resulting in the observation of said species in the Arctic and sub-Arctic waters (“Marine Fishes of the Arctic” sec. 1).
Along with their findings about fish and benthic species that inhabit the Arctic waters, the NOAA’s Arctic Report released data related to the atmosphere, sea ice, sea level, and marine ecosystems. The atmosphere data collected concluded that while the average temperatures were still warmer than usual, they were down from the extreme temperatures reco...
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"Arctic Sea Ice Biota." Arctic Report Card. National Oceanic and Atmospheric Administration, n.d. Web. 20 May 2014. .
"Atmosphere Summary." Arctic Report Card. National Oceanic & Atmospheric Administration, n.d. Web. 20 May 2014. .
"Is Sea Level Rising?." National Ocean Service. National Oceanic and Atmospheric Administration, n.d. Web. 20 May 2014. .
"Marine Fishes of the Arctic." Arctic Report Card. National Oceanic and Atmospheric Administration, n.d. Web. 20 May 2014. .
"Sea Ice." Arctic Report Card. National Oceanic and Atmospheric Administration, n.d. Web. 20 May 2014. .
Works Cited
The Arctic region is home to a variety of valuable animals and plants, including polar bear, seal, and so on. The ecosystem of the Arctic region is fragile because these animals are evolved to live in extreme conditions. With the climate change, many animals are endangered. Ice is the habitat of polar animals because they have to rely on sea ices for resting, food, and reproduction. With the climate change and the decrease of sea ice, the number of polar animals is decreasing and their health is threatened. For example, the average weight of female polar bears in 1980 was about 650 pounds, but the number reduced to about 500 pounds in 2004 (Djoghlaf 15). The earlier breakup and later condensation of sea ice shortens the hunting season of polar bears. Polar bears mainly feed on seals that indwell icy land. The melting ice reduces the number of seals and food intake of polar bears. In addition, polar bears are used to living in ice caves. The rising temperature causes the collapse of ice caves, which can kill baby bears. The climate change is negatively affecting the biodiversity in the region and will definitely harm the ecosystem
* Perhaps the most noticeable and striking characteristics of a polar bear is its color. The fur shafts themselves are not white. The shafts actually lack pigmentation and are transparent which allows them to scatter and reflect light resulting in ideal camouflage in a world of ice and snow.
The Tundra suffers a very harsh climate. Because of this fact most of the area
Canada’s arctic has evidently suffered from substantial climate change, resulting in devastating impacts on all systems in the north. Many climate models indicate that these significant changes will only progress in the future. The monitoring of temperatures in the Arctic have demonstrated that, over roughly the past 50 years, there has been a warming of about 2 to 3°C as of 2009. The average temperature in the arctic has increased almost twice as fast than the rest of the world. In 2020, the projected increase is up to 4°C as well as 8°C by 2050. A numbers of studies have shown that, based on previous climate records, there has been issues of rising sea levels, alterations in sea-ice dynamics, and permafrost degradation. Though there have been multiple strategies posed and adopted, the government of Canada needs to develop an arctic strategy that is more proactive and systemic than previous actions. This strategy needs to be global in its goals for mitigation while still monitoring social, cultural, and economic aspects
(Vol 48, 900). Another requirement of necessary conditions for lighting to occur is that greater heights of the -10 isotherms that are greater than a kilometer above ground level are “also conductive to lake effect lightning because this condition allows more graupel to form in the warmer cloud.” (Vol 48 900). Having a higher equilibrium level greater than 3.6km will allow greater cloud depth to develop convection. Minimal wind shear and more signalized snow bands instead of multiple bands will enhance the
To study the changes in the total mercury (HgT) and mercury stable isotopes ratio in Arctic biota as it moves up in trophic levels of Arctic marine ecosystems (Chapter 4).
The discoverer of the titanic, Dr Robert Ballard famously referred to the deep sea as ‘far more alien than going to mars or the moon.’ The deep sea is one of the largest virtually unexplored ecosystems on the planet; it is found at a depth of 1000 fathoms [1] and is subject to adverse changes in temperature, pressure and light penetration amongst other factors. Therefore as expected fish decrease in abundance, and species diversity. This trend is prominent as in order to survive the harsh conditions of the deep sea, fish need a number of specific adaptations. Allowing them to ultimately survive, feed, and reproduce.
The Narwhal, Monodon monoceros, is a social, specialized deep-water marine mammal characterized by a unique tooth growth protruding from the upper jaw. Narwhals lives along the coasts and rivers throughout the Arctic,characterized by icy ocean temperatures. Narwhals are usually found in groups of 15 to 20, but herds of several thousand have been seen in the Arctic waters since 1871. Regularly found eastwards from the Canadian Arctic to central Russia they have also been distributed throughout the Eurasian Arctic and in an especially high abundance around the oceans west of Cape Farewell on the east coast of Greenland in the summers and during the winter primarily in the Baffian Bay, and in the Canadian archipelago in the springtime (Reeves, Tracey). The Narwhal has two teeth, located in the upper jaw, however only the left tooth usually develops leaving the underdeveloped right tooth in males and typically both teeth in females vestigial (Das). The protruding tusk grows to about 3 meters forward in a counterclockwise spiral pattern (Drury). The distal end of the tusk appears polished, with the remainder commonly covered by a growth of algae. There is an outer layer of cement, an inner layer of dentine, and a pulp cavity that is rich in blood (Reeves, Tracey). The Narwhal’s head and body ranges from 3-6 meters, with the pectoral fin being around 30-40 cm, and the tail flukes expanding over one meter (Reeves, Tracey). The males are typically larger in size than the females averaging about 3,500 pounds in males and 1,000 in females (Drury). Their bodies begin as an uneven grayish hue and as they mature darken to a mottled bluish black color, darker above than below (Reeves, Tracey). Narwhals posses relatively small heads, a blunt sno...
The tundra is a biome that is located in the Northern Hemisphere of the world. It circles the North Pole and reaches down to the taiga. The tundra has a very cold and harsh climate, especially in the winters. The average winter temperatures is about -30°F and average summer temperatures is roughly 37-54°F. The yearly amount of precipitation, which includes melting snow, averages to about 6 to 10 inches. With these conditions it makes for a short growing season of about 50-60 days. In some parts it can be up to 180 days. This is only found in the more southern part of the tundra. Another aspect of the tundra includes the vegetation that is found there and the adaptations that have been made.
"Ocean Events." GRACE â Uncovering the 2010-11 Decline in Global Mean Sea Level and Its Relation to ENSO (October, 2012). N.p., 8 Oct. 2012. Web. 2 Mar. 2014.
As the following report demonstrates, some species are adapting to climate changes while many others are not. In some cases, laboratory experiments have lead to the conclusion that certain species can or cannot adapt and evolve. This research is not sufficient to make definitive statements regarding what will happen to species if temperatures and sea levels continue to rise.
Polar bears are one of the Earth’s largest and most powerful carnivores. These bears are dependent on sea ice as their primary habitat and are thus found on the Arctic coasts of North America. The scientific term used to describe polar bears, Ursus maritimus translates to sea bear because polar bears spend most of their lives on the Arctic ice. A common misconception the public holds is that polar bears are white; their fur is actually consists of two transparent layers: hollow guard hairs and an undercoat. While the two layers appear white because the air spaces in each hair scatter light, they are actually transparent and the black skin underneath the fur is penetrated by sunlight, warming the bears body. Polar bears are the largest of
Monastersky, Richard. "Rising sea levels: Predictions and plans.." Science News 11 1987. 15 Jan 2005 .
Four NOMAD buoys across the North Atlantic registered a 13-degree drop in SST. And soon a series of extreme weather happened in front of my eyes: hurricanes, snow storms, and even cyclones that rapidly pulled cool air from the upper troposphere which made people freeze instantly. Those were the scenes I saw from The Day after Tomorrow, the film that inspired my curiosity in atmospheric sciences in my seventh grade. Although shocked by the catastrophe caused by global warming in the film, I couldn't help take an eager interest in how freshwater from melted polar ice caps brought a shift in the North Atlantic Current, and how the shifted current brought a change in the earth’s climate. Later, as I gathered more information about the climate, I became fascinated by the physical and dynamical mechanisms explaining atmospheric phenomenon. And after three years of undergraduate study of atmospheric sciences, beyond the starting point of fascination, I have taken concrete steps forward with my hard work, independence, and creativity.
In many parts of the world, ecosystems’ temperatures begin to rise and fall to extreme levels making it very difficult for animals and plants to adapt in time to survive. Climate has never been stable here on Earth. Climate is an important environmental influence on ecosystems. Climate changes the impacts of climate change, and affects ecosystems in a variety of ways. For instance, warming could force species to migrate to higher latitudes or higher elevations where temperatures are more conducive to their survival. Similarly, as sea level rises, saltwater intrusion into a freshwater sys...