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An observed impact of climate change is a strong increase in the number of lightnings in the Arctic. Lightnings increase the risk for wildfires. [45] Some research suggests that globally, a warming greater than 1.5 °C (2.7 °F) over the preindustrial level could change the type of precipitation in the Arctic from snow to rain in summer and autumn.
The increasing stratification of the oceans due to climate change therefore acts generally to reduce ocean productivity. However, in some areas, such as previously ice covered regions, productivity may increase. This trend is already observable and is projected to continue under current projected climate change.
The Arctic Ocean covers an area of 14,056,000 square kilometers, and supports a diverse and important socioeconomic food web of organisms, despite its average water temperature being 32 degrees Fahrenheit. [1] Over the last three decades, the Arctic Ocean has experienced drastic changes due to climate change. [1]
The United Nations' Intergovernmental Panel on Climate Change's (IPCC) Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC) is a report about the effects of climate change on the world's seas, sea ice, icecaps and glaciers. It was approved at the IPCC's 51st Session (IPCC-51) in September 2019 in Monaco. [1]
Much of the Arctic ice pack is also covered in snow for about 10 months of the year. The maximum snow cover is in March or April—about 20–50 cm (7.9–19.7 in) over the frozen ocean. The climate of the Arctic region has varied significantly during the Earth's history.
The Arctic Ocean is the mass of water positioned approximately above latitude 65° N. Arctic Sea Ice refers to the area of the Arctic Ocean covered by ice. The Arctic sea ice minimum is the day in a given year when Arctic sea ice reaches its smallest extent, occurring at the end of the summer melting season, normally during September.
The increasingly concerning consequences of climate change in the Arctic, resulting in melting Arctic sea ice, have become ground for enhanced attention and cooperation in the region. Fear of economic exploitation and pollution in the Arctic Ocean was a key source of momentum in drafting and implementing the Ilulissat Declaration. [ 3 ]
It was observed for the first time in the first decade of 2000s and is perhaps linked to recent climate change. [3] The Arctic dipole lets more southern winds into the Arctic Ocean resulting in more ice melting. [1] The summer 2007 event played an important role in the record low sea ice extent which was recorded in September. [2]
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