liu.seSök publikationer i DiVA
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions
Ecole Polytech Fed Lausanne, Switzerland; Umea Univ, Sweden.
Umea Univ, Sweden.
Ecole Polytech Fed Lausanne, Switzerland.
Univ Florida, FL 32611 USA.
Visa övriga samt affilieringar
2021 (Engelska)Ingår i: Nature Geoscience, ISSN 1752-0894, E-ISSN 1752-0908, Vol. 14, nr 5, s. 289-294Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Carbon dioxide (CO2) emissions to the atmosphere from running waters are estimated to be four times greater than the total carbon (C) flux to the oceans. However, these fluxes remain poorly constrained because of substantial spatial and temporal variability in dissolved CO2 concentrations. Using a global compilation of high-frequency CO2 measurements, we demonstrate that nocturnal CO2 emissions are on average 27% (0.9 gC m(-2) d(-1)) greater than those estimated from diurnal concentrations alone. Constraints on light availability due to canopy shading or water colour are the principal controls on observed diel (24 hour) variation, suggesting this nocturnal increase arises from daytime fixation of CO2 by photosynthesis. Because current global estimates of CO2 emissions to the atmosphere from running waters (0.65-1.8 PgC yr(-1)) rely primarily on discrete measurements of dissolved CO2 obtained during the day, they substantially underestimate the magnitude of this flux. Accounting for night-time CO2 emissions may elevate global estimates from running waters to the atmosphere by 0.20-0.55 PgC yr(-1). Failing to account for emission differences between day and night will lead to an underestimate of global CO2 emissions from rivers by up to 0.55 PgC yr(-1), according to analyses of high-frequency CO2 measurements.

Ort, förlag, år, upplaga, sidor
NATURE RESEARCH , 2021. Vol. 14, nr 5, s. 289-294
Nationell ämneskategori
Naturgeografi
Identifikatorer
URN: urn:nbn:se:liu:diva-175412DOI: 10.1038/s41561-021-00722-3ISI: 000640456800002Scopus ID: 2-s2.0-85104783751OAI: oai:DiVA.org:liu-175412DiVA, id: diva2:1548980
Anmärkning

Funding Agencies|Formas grant - National Science Foundation Macrosystems program (NSF) [EF-1442439]; National Science FoundationNational Science Foundation (NSF) [EAR-1847331]

Tillgänglig från: 2021-05-04 Skapad: 2021-05-04 Senast uppdaterad: 2022-03-23Bibliografiskt granskad

Open Access i DiVA

fulltext(4326 kB)492 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 4326 kBChecksumma SHA-512
d21bb50b05febabb8c2925bd294e29f95a160b7cc3e9ab99fcc1334870a725ab9d1a8a6aa5dd0b2a4a31f6d09d29dbc0002f26a1cff2c62ef936fc7968a8cfcd
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextScopus

Sök vidare i DiVA

Av författaren/redaktören
Enrich Prast, Alex
Av organisationen
Tema MiljöförändringFilosofiska fakulteten
I samma tidskrift
Nature Geoscience
Naturgeografi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 492 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 146 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf