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Whilst the Arctic region is one of many natural sources of the greenhouse gas methane, there is nowadays also a human component to this due to the effects of climate change. [2] In the Arctic, the main human-influenced sources of methane are thawing permafrost, Arctic sea ice melting, clathrate breakdown and Greenland ice sheet melting.
Frozen Planet is a 2011 British nature documentary series. It was produced as a co-production between the BBC Natural History Unit, Discovery Channel, Antena 3 Television S.A., ZDF, Skai tv and The Open University, in association with Discovery Channel Canada. [2]
Arctic warming negatively affects the foraging and breeding ecology of native Arctic mammals, such as Arctic foxes or Arctic reindeer. [91] In July 2019, 200 Svalbard reindeer were found starved to death apparently due to low precipitation related to climate change. [92] This was only one episode in the long-term decline of the species.
1770–1771: Samuel Hearne traces the Coppermine River to the Arctic Ocean; 1773: Ivan Lyakhov discovered Kotelny Island; 1773: The Phipps expedition towards the North Pole reaches 80° 37 ′ N, north of Spitsbergen. [1] This was the first Arctic expedition to carry out scientific research. [2]
Water was the original coolant for internal combustion engines. It is cheap, nontoxic, and has a high heat capacity. It however has only a 100 Kelvin liquid range, and it expands upon freezing. To address these problems, alternative coolants with improved properties were developed.
The crumb problem was solved with the addition of a gelatin coating on the foods to lock in and prevent crumbs. [13] Disease-producing bacteria and toxins were reduced by quality control and the development of the Hazard Analysis and Critical Control Points (HACCP) plan, which is widely used today to evaluate food material before, during, and ...
From late December to early January, a sudden stratospheric warming event was observed over the Arctic, which caused the "polar vortex" to weaken and split into three lobes. In late January 2019, one of these lobes traveled southward and stalled over central Canada and north-central United States for about a week before the upper-level flow of ...
Arctic ecology is the scientific study of the relationships between biotic and abiotic factors in the arctic, the region north of the Arctic Circle (66° 33’N). [1] This region is characterized by two biomes: taiga (or boreal forest ) and tundra . [ 2 ]