SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:uu-409744"
 

Sökning: onr:"swepub:oai:DiVA.org:uu-409744" > Mechanisms controll...

  • Gutiérrez-Loza, LucíaUppsala universitet,Luft-, vatten- och landskapslära (författare)

Mechanisms controlling air-sea gas exchange in the Baltic Sea

  • BokEngelska2020

Förlag, utgivningsår, omfång ...

  • Uppsala universitet,2020
  • 39 s.
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-409744
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-409744URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:vet swepub-contenttype
  • Ämneskategori:lic swepub-publicationtype

Anmärkningar

  • Carbon plays a major role in physical and biogeochemical processes in the atmosphere, the biosphere, and the ocean. CO2 and CH4 are two of the most common carbon-containing compounds in the atmosphere, also recognized as major greenhouse gases. The exchange of CO2 and CH4 between the ocean and the atmosphere is an essential part of the global carbon cycle. The exchange is controlled by the air–sea concentration gradient and by the efficiency of the transfer processes. The lack of knowledge about the forcing mechanisms affecting the exchange of these climate-relevant gases is a major source of uncertainty in the estimation of the global oceanic contributions. Quantifying and understanding the air–sea exchange processes is essential to constrain the estimates and to improve our knowledge about the current and future climate. In this thesis, the mechanisms controlling the air–sea gas exchange in the Baltic Sea are investigated.The viability of micrometeorological techniques for CH4 monitoring in a coastal environment is evaluated. One year of semi-continuous measurements of air–sea CH4 fluxes using eddy covariance measurements suggests that the method is useful for CH4 flux estimations in marine environments. The measurements allow long-term monitoring at high frequency rates, thus, capturing the temporal variability of the flux. The region off Gotland is a net source of CH4, with both the air–sea concentration gradient and the wind as controlling mechanisms.A sensitivity analysis of the gas transfer velocity is performed to evaluate the effect of the forcing mechanisms controlling the air–sea CO2 exchange in the Baltic Sea. This analysis shows that the spatio-temporal variability of CO2 fluxes is strongly modulated by water-side convection, precipitation, and surfactants. The effect of these factors is relevant both at regional and global scales, as they are not included in the current budget estimates.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Rutgersson, Anna,1971-Uppsala universitet,Luft-, vatten- och landskapslära(Swepub:uu)aru27058 (preses)
  • Sahlée, ErikUppsala universitet,Luft-, vatten- och landskapslära(Swepub:uu)ersah499 (preses)
  • Wallin, Marcus,1979-Uppsala universitet,Luft-, vatten- och landskapslära,Limnologi(Swepub:uu)marwa654 (preses)
  • Prytherch, John,Research EngineerDepartment of Meteorology (MISU), Stockholm University (opponent)
  • Uppsala universitetLuft-, vatten- och landskapslära (creator_code:org_t)

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy