Arctic Report Essay

... phytoplankton to fish, the sea ice is an integral part of the Arctic marine ecosystem” (Derocher, 2014).

* 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 content from Tom Metcalfe furnished us with an inside and out depiction about how environmental change has influenced the Ice Shelf in the world's polar area, where their work occurred The dispatch of 9 specialists educated the group of onlookers on how the atmosphere has crumbled the Antarctic ice retire because of warmth permitting the infiltration of light. By recognizing the expansion in light introduction in the sea, the specialists which pigeon to watch changes saw an increment in biodiversity which in the Arctic locale is intensely constituted by marine life. They could reason that more species have been invited by the environmental change because of the light creating green growth drawing in marine life which thus influences 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).

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

Scientists are currently having a great debate; are the arctic storms at lower latitudes normal weather patterns? Or are they happening due to human activity? The effects of climate change are reshaping weather patterns all over the g...

In the past thirty-five years climate change has been a dilemma around the world, Earth’s surfaces temperatures are at an all-time high and continue to rise, thus triggering us to endure more problems further down the line. Due to the rise in earths temperatures sea ice in the arctic has thinned out and melted over the last several decades, since 1870 seal levels have risen by eight inches due to this crisis. Arctic sea ice is essential to the environment, it forms and grows white ice on top of the ocean reflecting the sun back to space. Polar regions depend on sea ice to keep cool throughout the year, it helps moderates global climate, and it influences the ocean circulation (Song 2012, 4074). Sea ice is vital for animal habitats in the Arctic,

Ditions enclose roughly the same territory, which is somewhat larger than the region bounded by the Arctic Circle, and will be used as the basis for this article.The largest Arctic tundra areas are in Canada, Russia, Greenland (Kalatdlit-Nunat), Scandinavia, Iceland and Alaska.Climate and Land Formation Tundra climate is characterized by harsh winters, low average temperatures, little snow or rainfall, and a short summer season (Goudie 1993). The arctic tundra, in particular, is influenced by permafrost, a layer of permanently frozen subsoil in the ground. The surface soil, which tends to be rocky, thaws in summer to varying depths. The combination of frozen ground and flat terrain on the tundra impedes the drainage of water. Held at the surface or saturating the upper layer of soil, the water forms ponds and bogs that provide moisture for plants, thereby counteracting the low precipitation.In relatively well-drained locations, the periodic freezing and thawing of the soi gy are also extremely important. Some animals adapt well to Arctic conditions; for instance, a number of species of mammals and birds carry additional insulation, such as fat, in cold months (Urquhart 1995).The Arctic has more than 400 species of flowering plants. The vast stretches of tundra that cover the plains and coastal regions consist of low creeping shrubs, grasses, thick growths of lichens and mosses, and herbs and sedges.Abundant animal life inhabits the Arctic, both on land and in the sea. Arctic mammals include polar bear, arctic fox, ermine, marten, arctic wolf, wolverine, walrus, seal, caribou, reindeer (domesticated caribou), musk-ox, lemming, arctic hare, and many species of whale.Birds are plentiful throughout the Arctic Regions. The guillemot and little auk nest by the thousands along cliffs. Ravens, snow buntings, and sandpipers have been seen in the remotest northern land regions, as have the snowy owl and the gyrfalcon. Various species of gull, including the jaeger, also range far t laska and northern Canada still follow a subsistence lifestyle. They live as their ancestors have, measuring their lives with the caribou.The Porcupine caribou herd sustains some 7,000 aboriginal people in northern Canada and Alaska. They rely on caribou meat for food and on the herd for learning the ways of their culture. For the Gwich'in, which means "caribou people," this animal is the spiritual center of life. Young men learn from their fathers and uncles how to hunt wisely and use all parts of the animal.

...temperatures will continue causing ice melt in summer. Consequently, the surface water carbon dioxide partial pressure will continue to increase, further reducing the ability of the CO2 sink to take up more CO2. The high-resolution survey further points to the fact that the future will see an increased air-sea CO2 flux. This is due to the exposure of more area of sea water as well as long periods when the Arctic Ocean surface will be subjected to ice-free conditions. Though this is expected, the capacity of the CO2 sink in the Arctic Ocean to continue taking up CO2 is predicted to weaken due to equilibration of pCO2 of surface water with the atmosphere. The survey highlights four major factors which facilitate this equilibrium. These include low CO2 fixation, surface warming, shallow mixed-layer depth, and strong stratification of surface water (Cai, et al., 2010).

Arctic tundra is located in the northern hemisphere, encircling the North Pole and extending south to the Coniferous forests of the Taiga. The arctic is known for its cold, desert-like conditions. The growing season ranges from 50 to 60 days. The average winter temperature is -34° C (-30° F), but the average summer temperature is 3-12° C (37-54° F), which enables this biome to sustain life. Rainfall may vary in different regions of the arctic. Yearly precipitation, including mel...