Consulta: creatorFacets:"Battaglia, Gianna"
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Data/hora: 16/06/2024 09:26:51

Impact of Nonzero Intercept Gas Transfer Velocity Parameterizations on Global and Regional Ocean-Atmosphere CO2 Fluxes
Provedor de dados: 5
Autores: Ribas-ribas, Mariana; Battaglia, Gianna; Humphreys, Matthew P.; Wurl, Oliver.
Carbon dioxide (CO2) fluxes between the ocean and atmosphere (FCO2) are commonly computed from differences between their partial pressures of CO2 (pCO(2)) and the gas transfer velocity (k). Commonly used wind-based parameterizations for k imply a zero intercept, although in situ field data below 4 m s(-1) are scarce. Considering a global average wind speed over the ocean of 6.6 m s(-1), a nonzero intercept might have a significant impact on global FCO2. Here, we present a database of 245 in situ measurements of k obtained with the floating chamber technique (Sniffle), 190 of which have wind speeds lower than 4 m s(-1). A quadratic parameterization with wind speed and a nonzero intercept resulted in the best fit for k. We further tested FCO2 calculated with...
Tipo: Text
Palavras-chave: Gas transfer velocity; Low wind speed; Carbon dioxide; Ocean-atmosphere CO2 flux; Carbon cycle.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00675/78732/80994.pdf