up·​well | \ ˌəp-ˈwel How to pronounce upwell (audio) \
upwelled; upwelling; upwells

Definition of upwell

intransitive verb

: to well up specifically : to move or flow upward

Examples of upwell in a Sentence

Recent Examples on the Web Models suggest that when the basin formed, Pluto’s equator was elsewhere, but that after the impact occurred, an underground watery ocean began upwelling into the chasm while ice gathered atop it. Robin George Andrews, Scientific American, "Collision on One Side of Pluto Ripped Up Terrain on the Other, Study Suggests," 26 Mar. 2020 The problem is often exacerbated in near-shore waters where upwelling brings cold, acidic waters from the depths to the surface. oregonlive, "Ocean acidification is impacting Dungeness crabs, Oregon’s most-valuable fishery, study shows," 24 Jan. 2020 Cold currents from sinking plates would push the blobs around like Silly Putty; in turn, upwelling heat from the warm blobs would push the plates right back. Quanta Magazine, "Continents of the Underworld Come Into Focus," 7 Jan. 2020 But the absence of upwelling currents there means a mass release of carbon dioxide at a depth of 4,600 feet would likely acidify the surrounding waters but not enter the atmosphere for an extremely long time. Todd Woody, National Geographic, "Huge amounts of greenhouse gases lurk in the oceans, and could make warming far worse," 17 Dec. 2019 Weaker winds and a probable resulting decline in upwelling were key factors in the spiking water temperatures, according to a recent study led by Joke Lübbecke, an ocean researcher at the GEOMAR Helmholtz Centre for Ocean Research in Kiel, Germany. Max Bearak, Washington Post, "A crisis in the water is decimating this once-booming fishing town," 27 Nov. 2019 The upwelling brine also contains some methane that could be siphoned off and burned. Mark Fischetti, Scientific American, "Climate Solution: Use Carbon Dioxide to Generate Electricity," 17 July 2019 Becker and Claudio Faccenna of Roma TRE University linked the downwelling current under East Asia to upwelling of hot mantle rock under Africa, a giant circuit of mantle wind that drives India and Arabia northward today. Howard Lee, Ars Technica, "Plate tectonics runs deeper than we thought," 3 Oct. 2019 These northwesterly winds near the surface also promote upwelling, pulling cool water from the deep and pushing warmer coastal water offshore, creating a less-hospitable environment for tropical cyclones. Los Angeles Times, "Could a hurricane lash Los Angeles? 80 years ago, this deadly storm came close," 22 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'upwell.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of upwell

1885, in the meaning defined above

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The first known use of upwell was in 1885

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Cite this Entry

“Upwell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/upwell. Accessed 13 Aug. 2020.

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