About: Arctic methane emissions

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Arctic methane release is the release of methane from seas and soils in permafrost regions of the Arctic. While it is a long-term natural process, methane release is exacerbated by global warming. This results in a positive feedback cycle, as methane is itself a powerful greenhouse gas.

Attributes	Values
rdf:type	yago:WikicatClimateFeedbacks yago:Consequence111410625 yago:Feedback113479380 yago:NaturalProcess113518963 yago:Phenomenon100034213 yago:PhysicalEntity100001930 yago:Process100029677 album yago:WikicatEffectsOfGlobalWarming
rdfs:label	انبعاثات الميثان من القطب الشمالي (ar) Emisiones de metano en el Ártico (es) Arctic methane emissions (en) Rilascio del metano artico (it) Relargage du méthane de l'Arctique (fr) 北極甲烷釋出 (zh)
rdfs:comment	Le relargage du méthane de l'Arctique désigne plusieurs formes de rejet du méthane contenu dans les mers, les écosystèmes sous-glaciaires et les sols du pergélisol arctique. Ce processus se déroule naturellement sur des échelles de temps longues, mais il est probable que le changement climatique de la fin du XXe siècle et du début du XXIe siècle accentue le phénomène. Le méthane étant un gaz à effet de serre, son relargage accéléré entraîne une rétroaction positive sur le réchauffement climatique, c'est-à-dire une accélération de celui-ci. (fr) Il rilascio del metano artico è un fenomeno che consiste nel rilascio di metano da parte del permafrost e dei mari artici, dentro i quali sono contenute grandi quantità di gas. Si tratta di un processo naturale innescato dal riscaldamento globale che determina a sua volta un ulteriore aumento dell'effetto serra, contribuendo dunque al riscaldamento globale tramite un meccanismo di retroazione positiva. (it) 甲烷是一種非常強力的溫室氣體。其具有多種天然來源，雖然目前北極僅佔了其中一小部份，然而全球暖化可能造成北極地區甲烷的加速釋放。雖然北極的釋放量近來逐漸增加，但由於其他天然來源並未增加釋放量，大氣中的甲烷含量在近十年來是維持穩定的。北極的天然瓦斯儲藏庫－永久冻土中含有大量的甲烷，水底的晶籠化合物也含有甲烷。甲烷也透過河流被输送到北極地區。。在溫暖的環境中，永久凍土和晶籠化合物會被分解，因此大量的甲烷釋出被認為是全球暖化的可預期結果之一。任何因全球暖化而從北極釋出的甲烷，將會造成更嚴重的全球暖化。這被稱為正回饋（positive feedback）現象。若反馈現象中的增益足夠，將會造成「」。科學家認為目前這樣的情況的確有機會出現，但可能要等到千年後才會發生。在間冰期時，大氣中的甲烷的濃度是冰河期時最低值的近兩倍之多。在間冰期，有南北半球甲烷濃度不平衡的情況發生，北極大氣中的甲烷濃度比南極要高出8－10%。在冰河時期，這種不平衡的差距縮小到微不足道的範圍內。 (zh) انبعاث غاز الميثان من القطب الشمالي هو انطلاق غاز الميثان من البحار والتربة في مناطق التربة الصقيعية في القطب الشمالي. مع أنها تُعدّ عملية طبيعية طويلة الأمد، فهي تتفاقم بفعل الاحتباس الحراري، ما يؤدي بدوره إلى تأثيرات سلبية لأن غاز الميثان بحد ذاته يُعدّ غازًا دفيئًا قويًا. (ar) Arctic methane release is the release of methane from seas and soils in permafrost regions of the Arctic. While it is a long-term natural process, methane release is exacerbated by global warming. This results in a positive feedback cycle, as methane is itself a powerful greenhouse gas. (en) Las emisiones de metano en el Ártico son producto de la liberación de metano de los mares y suelos en las regiones de permafrost del Ártico. Si bien es un proceso natural a largo plazo, la liberación de metano se ve agravada por el calentamiento global. Esto tiene como resultado efectos negativos, ya que el metano es en sí mismo un potente gas de efecto invernadero. (es)
foaf:depiction
dcterms:subject	Environment of the Arctic Effects of climate change Greenhouse gas emissions Permafrost Methane Arctic Ocean Climate change feedbacks
Wikipage page ID	19480112 (xsd:integer)
Wikipage revision ID	1117239979 (xsd:integer)
Link from a Wikipage to another Wikipage	dbr:Carbon_dioxide Pseudomonadota Methane clathrate Methanogenesis Long-term effects of global warming Biomass Arctic Ocean Arctic dipole anomaly Environment of the Arctic Peat fires Deposition (geology) Permafrost Carbon Cycle Russell Glacier (Greenland) Gas flare Gas hydrate pingo Climate change feedback Climate change Global warming in Antarctica NOAA Effects of climate change Permafrost Talik Greenhouse gas emissions Permafrost Climate action ARPA-E Parts per billion Methane chimney Greenhouse gas Atmospheric methane Arctic Arctic Council Atmosphere of Earth Methane Arctic Ocean Climate change feedbacks Tundra Clathrate gun hypothesis Clathrate hydrate Methanotrophs Methane Sea ice Soil respiration Wetland methane emissions Positive feedback cycle Megagrams
Link from a Wikipage to an external page	http://envisionation.co.uk/index.php/arctic-methane-why-the-sea-ice-matters http://siberiantimes.com/science/casestudy/news/n0018-exclusive-new-pictures-inside-mystery-siberian-crater/ https://www.youtube.com/watch%3Fv=aqxbU9zOKgE http://siberiantimes.com/science/casestudy/news/n0905-7000-underground-gas-bubbles-poised-to-explode-in-arctic/ http://www.ameg.me http://www.bbc.com/future/story/20190822-why-is-the-arctic-on-fire%3Focid=fbfut https://web.archive.org/web/20141221175037/http:/www.methanetracker.org/ https://web.archive.org/web/20160205080636/http:/lasthours.org/ https://www.nationalgeographic.com/environment/2019/08/arctic-permafrost-is-thawing-it-could-speed-up-climate-change-feature/ https://www.washingtonpost.com/graphics/2018/national/arctic-lakes-are-bubbling-and-hissing-with-dangerous-greenhouse-gases/
sameAs	Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions Arctic methane emissions

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