Oké osimiri okpomọkụ ọdịnaya

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Ihe okpomọkụ dị n'oké osimiri (OHC) bụ ike nkè oké osimiri na-amị ma na-echekwa. N'agbata afọ 1971 na afọ 2018, ịrị elu nke OHC na-akpata ihe karịrị 90% nkè ike okpomọkụ nke ụwa site na okpomọkụ ụwa. Isi ihe na-akwọta mmụba OHC a nwèrè ike ịbụ nrụgide sitere n'aka mmadụ site na mmụba nke gas na-ekpo ọkụ: 1228 Ka ọ na-erule afọ 2020, ihe dị ka otu ụzọ n'ụzọ atọ nke ike agbakwunyere agbasago na omimi n'okpuru mita narị asaa.[1][2] Ihe okpomọkụ dị n'oké osimiri na ịrị elu nke oke osimiri bụ ihe ngosi dị mkpa nke mgbanwe ihu igwe. A na-eji okwu ahụ eme ihe na oceanography na climatology.

Mmiri oké osimiri na-amịkọrọ ike anyanwụ nkè ọma ma nwekwaa ikike okpomọkụ dị ukwuu karịa gas ikuku.[1] N'ihi ya, mita ole na ole kachasị elu nke oké osimiri nwèrè ike okpomọkụ karịa ikuku ụwa dum.[3] Kemgbe tupu afọ 1960, ụgbọ mmiri na ụlọ ọrụ nyocha anwalewo okpomọkụ na okpomọkụ dị n'elu oké osimiri na omimi ka ukwuu n'ụwa niile. Ọzọkwa, kemgbe afọ 2000, netwọk na-agbasawanye nke ihe fọrọ nke nta ka ọ bụrụ puku anọ Argo robotic floats atụlewo anomalies okpomọkụ, ma ọ bụ mgbanwe na OHC. OHC anọwo na-abawanye na ọnụego kwụ chịm ma ọ bụ na-eme ngwa ngwa kemgbe ọ dịkarịa ala 1990. Ọnụ ọgụgụ mgbanwe na mita 2000 dị n'elu site n'afo 2003 ruo 2018 bụ +0.58±0.08 W / m2 (ma ọ bụ mmeri ike kwa afọ nke 9.3 zettajoules). Enweghị ntụkwasị obi bụ n'ihi ihe ịma aka nke ịme nyocha ọtụtụ iri afọ na nkenke zuru oke na mkpuchi oghere.

Nkọwa[dezie | dezie ebe o si]

Ihe osise nke thermoclines dị iche iche (omimi na okpomọkụ oké osimiri) dabere na oge na latitude

Ihe okpomọkụ dị n'oké osimiri bụ "ngụkọta okpomọkụ nke oké osimiri na-echekwa".[4] Iji gbakọọ okpomọkụ dị n'oké osimiri, a chọrọ ịnwe nyocha nke okpomọkụ oké osimiri n'ọtụtụ ébé na omimi dị ichè ichè.

Nnyocha nkè okpomọkụ na omimi oké osimiri n'ozuzu na-egosi elu ngwakọta (020 m), thermocline (20000 m), na omimi oke osimiri (>1500 m). Ogologo ókèala ndị a bụ naanị ihe atụ siri ike. Ìhè anyanwụ na-abanye n'ime omimi kachasị elu nke ihe dị ka mita narị abụọ; elu 80 m nke bụ mpaghara obibi màkà ndụ mmiri photosynthetic na-ekpuchi ihe karịrị pasenti iri asaá nke elu ụwa.[5] Omume ebili mmiri na ihe ndị ọzọ na-eme n'elu na-enyere aka ịha nhata okpomọkụ n'elu elu.

Ihe na-akpata okpomọkụ[dezie | dezie ebe o si]

Ihe karịrị 90% nke ike okpomọkụ nke gbakọtara n'ụwa site na okpomọkụ ụwa kemgbe 1970 na-echekwa n'oké osimiri.
Global Heat Content n'elu mita 2000 nke oké osimiri kemgbe 1958[6]

Igwe anyanwụ nke dị n'etiti ụwa nke na-amịkọrọ mmiri na-ekpo ọkụ na-akpali mgbasa nke okpomọkụ oké osimiri. Elu ya na-agbanwekwa ike na troposphere dị ala, ma si otú a na-emeghachi omume na mgbanwe ogologo ógè na igwe ojii albedo, gas na-ekpo ọkụ, na ihe ndị ọzọ na mmefu ego ike nke ụwa.[1] Ka ógè na-aga, enweghị nkwụsi ike na mmefu ego na-eme ka okpomọkụ na-abanye ma ọ bụ na-apụ n'ime ma ọ bụ n'ime omimi oké osimiri site na conduction thermal, downwelling, na upwelling.[7][8]

Oké osimiri na-ekpo ọkụ bụ otu ihe kpatara na coral na-acha ọcha ma na-enye aka na mbata nke ụdị mmiri.[9] Oké okpomọkụ nke mmiri bụ mpaghara nke na-eyi ndụ égwu na okpomọkụ mmiri na-adịgide adịgide.[10] Ikekọrịta ike dị n'ime mbara ala site na mgbasa ikuku na oke osimiri na-emepụta mgbanwe ihu igwe dị n'etiti, mgbé mgbè n'ụdị oscillations na-adịghị mma, ma na-enyere aka ịnọgide na-enwe mgbasa nkè thermohaline zuru ụwa ọnụ.[11]

Mmụba nke OHC na-akpata 30o40% nke ịrị elu nke oke osimiri ụwa site na afọ 1900 ruo afọ 2020 n'ihi mgbasawanye okpomọkụ.[12] Ọ bụkwa ihe na-eme ka ice nke oké osimiri, iceberg, na mmiri mmiri na-agbaze. Mfu ice na-ebelata polar albedo, na-eme ka mpaghara na ụwa ghara ịdị mmá.[13] Nlaghachi ice na-esi na ya apụta abụwo ngwa ngwa ma gbasaa màkà ice mmiri Arctic, na n'ime fjords ùgwù dị ka nke Greenland na Canada.[14][15] Mmetụta na ice nke oké osimiri Antarctic na nnukwu ice shelves nke Antarctic nke na-akwụsị n'ime Southern Ocean dịgasị iche site na mpaghara ma na-abawanye n'ihi mmiri na-ekpo ọkụ.[16] Nkewa nke Thwaites Ice Shelf na ndị agbata obi ya na West Antarctica nyere aka ihe dị ka 10% nke ịrị elu nke oke osimiri n'afọ 2020.[17][18]

Nchọpụta na mgbanwe ndị e mere n'oge na-adịbeghị anya[dezie | dezie ebe o si]

Map nke oke osimiri okpomọkụ na mita 700 n'elu maka afọ 2020 na nkezi 1993 2020.[19] Mpaghara ụfọdụ nwetara ike karịa ndị ọzọ n'ihi ndị ọkwọ ụgbọala ụgbọ njem dịka ifufe na mmiri.

Ọ bụ ezie na elu puku abuo m nkè oké osimiri ahụ enweela okpomọkụ na nkezi kemgbe afọ 1970, ọnụego okpomọkụ nke oké osimiri dịgasị iche na mpaghara na subpolar North Atlantic na-ekpo ọkụ nkè nta nkè nta na Southern Ocean na-ewe nnukwu okpomọkụ n'ihi ikuku ikuku ikuku na-ekwo ekwo: 1230 

Enyemaka na nyocha nke oké osimiri na atụmatụ steeti[dezie | dezie ebe o si]

Page 'Ocean reanalysis' not found
Nhazi zuru ụwa ọnụ nke ụgbọ mmiri na-arụ ọrụ na usoro Argo[20]

Nnyocha okpomọkụ nke oké osimiri na-abịa na ihe isi ike, ọkachasị tupu itinye Argo profailing floats. N'ihi oghere na-adịghị mmá na data na-adịghị njọ, ọ naghị adị mfe mgbè niile ịmata ọdịiche dị n'etiti ọnọdụ okpomọkụ ụwa ogologo ógè na mgbanwe ihu igwe. Ihe atụ nke ihe ndị a na-agbagwoju anya bụ ọdịiche nke El Niño South Oscillation ma ọ bụ mgbanwe na okpomọkụ dị n'oké osimiri nke nnukwu mgbawa ugwu kpatara.

Hụkwa[dezie | dezie ebe o si]

  • Mmiri acid nke oké osimiri
  • Ọdịdị nke oké osimiri
  • Akụkọ pụrụ iche banyere Oké Osimiri na Cryosphere na Ọnọdụ ihu igwe na-agbanwe agbanwe
  • Oké ifufe na mgbanwe ihu igwe
  •  Climate change portal
  •  Ecology portal
  •  Oceans portal

Edensibia[dezie | dezie ebe o si]

  1. ↑ 1.0 1.1 1.2 LuAnn Dahlman and Rebecca Lindsey (2020-08-17). Climate Change: Ocean Heat Content. National Oceanic and Atmospheric Administration.
  2. ↑ Study: Deep Ocean Waters Trapping Vast Store of Heat. Climate Central (2016).
  3. ↑ Vital Signs of the Plant: Ocean Heat Content. NASA. Retrieved on 2021-11-15.
  4. ↑ US EPA (2016-06-27). Climate Change Indicators: Ocean Heat (en). www.epa.gov. Retrieved on 2023-02-28.
  5. ↑ photic zone (oceanography). Encyclopædia Britannica Online. Retrieved on 2021-12-15.
  6. ↑ Global Ocean Heat and Salt Content: Seasonal, Yearly, and Pentadal Fields. NOAA. Retrieved on 2022-02-26.
  7. ↑ Air-Sea interaction: Teacher's guide. American Meteorological Society (2012). Retrieved on 2022-02-22.
  8. ↑ Ocean Motion : Definition : Wind Driven Surface Currents - Upwelling and Downwelling. Retrieved on 2022-02-22.
  9. ↑ "The Great Barrier Reef: a catastrophe laid bare", The Guardian, 6 June 2016.
  10. ↑ So what are marine heat waves? - A NOAA scientist explains. National Oceanic and Atmospheric Administration (2019-10-08). Archived from the original on 2022-01-24. Retrieved on 2023-04-12.
  11. ↑ El Niño & Other Oscillations. Woods Hole Oceanographic Institution. Retrieved on 2021-10-08.
  12. ↑ NASA-led study reveals the causes of sea level rise since 1900. NASA (2020-08-21).
  13. ↑ Garcia-Soto, Carlos (2022-10-20). "An Overview of Ocean Climate Change Indicators: Sea Surface Temperature, Ocean Heat Content, Ocean pH, Dissolved Oxygen Concentration, Arctic Sea Ice Extent, Thickness and Volume, Sea Level and Strength of the AMOC (Atlantic Meridional Overturning Circulation)". Frontiers in Marine Science 8. DOI:10.3389/fmars.2021.642372. 
  14. ↑ Rebecca Lindsey and Michon Scott (2021-09-21). Climate Change: Arctic sea ice. National Oceanographic and Atmospheric Administration.
  15. ↑ Maria-Jose Viñas and Carol Rasmussen (2015-08-05). Warming seas and melting ice sheets. NASA.
  16. ↑ Michon Scott (2021-03-26). Understanding climate: Antarctic sea ice extent. National Oceanographic and Atmospheric Administration.
  17. ↑ Carly Cassella (2021-04-11). Warm Water Under The 'Doomsday Glacier' Threatens to Melt It Faster Than We Predicted. sciencealert.com.
  18. ↑ British Antarctic Survey (2021-12-15). The threat from Thwaites: The retreat of Antarctica's riskiest glacier. phys.org.
  19. ↑ Jessica Blunden (25 August 2021). Reporting on the State of the Climate in 2020. Climate.gov. National Oceanographic and Atmospheric Administration.
  20. ↑ About Argo. Scripps Institute of Oceanography, UC San Diego. Retrieved on 27 January 2023.
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