Ocean versus atmosphere control on western European wintertime temperature variability

Verfasser / Beitragende:
[Ayako Yamamoto, Jaime Palter, M. Lozier, Michel Bourqui, Susan Leadbetter]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 45/11-12(2015-12-01), 3593-3607
Format:
Artikel (online)
ID: 605472327
LEADER caa a22 4500
001 605472327
003 CHVBK
005 20210128100337.0
007 cr unu---uuuuu
008 210128e20151201xx s 000 0 eng
024 7 0 |a 10.1007/s00382-015-2558-5  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-015-2558-5 
245 0 0 |a Ocean versus atmosphere control on western European wintertime temperature variability  |h [Elektronische Daten]  |c [Ayako Yamamoto, Jaime Palter, M. Lozier, Michel Bourqui, Susan Leadbetter] 
520 3 |a Using a novel Lagrangian approach, we assess the relative roles of the atmosphere and ocean in setting interannual variability in western European wintertime temperatures. We compute sensible and latent heat fluxes along atmospheric particle trajectories backtracked in time from four western European cities, using a Lagrangian atmospheric dispersion model driven with meteorological reanalysis data. The material time rate of change in potential temperature and the surface turbulent fluxes computed along the trajectory show a high degree of correlation, revealing a dominant control of ocean-atmosphere heat and moisture exchange in setting heat flux variability for atmospheric particles en route to western Europe. We conduct six idealised simulations in which one or more aspects of the climate system is held constant at climatological values and these idealised simulations are compared with a control simulation, in which all components of the climate system vary realistically. The results from these idealised simulations suggest that knowledge of atmospheric pathways is essential for reconstructing the interannual variability in heat flux and western European wintertime temperature, and that variability in these trajectories alone is sufficient to explain at least half of the internannual flux variability. Our idealised simulations also expose an important role for sea surface temperature in setting decadal scale variability of air-sea heat fluxes along the Lagrangian pathways. These results are consistent with previous studies showing that air-sea heat flux variability is driven by the atmosphere on interannual time scales over much of the North Atlantic, whereas the SST plays a leading role on longer time scales. Of particular interest is that the atmospheric control holds for the integrated fluxes along 10-day back trajectories from western Europe on an interannual time scale, despite that many of these trajectories pass over the Gulf Stream and its North Atlantic Current extension, regions where ocean dynamics influence air-sea heat exchange even on a very short time scale. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Air-sea interaction  |2 nationallicence 
690 7 |a Lagrangian method  |2 nationallicence 
690 7 |a Climate variability  |2 nationallicence 
700 1 |a Yamamoto  |D Ayako  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
700 1 |a Palter  |D Jaime  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
700 1 |a Lozier  |D M.  |u Division of Earth and Ocean Sciences Nicholas School of the Environment, Duke University, Durham, NC, USA  |4 aut 
700 1 |a Bourqui  |D Michel  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
700 1 |a Leadbetter  |D Susan  |u Met Office, Exeter, UK  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3593-3607  |x 0930-7575  |q 45:11-12<3593  |1 2015  |2 45  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-015-2558-5  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-015-2558-5  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Yamamoto  |D Ayako  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Palter  |D Jaime  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lozier  |D M.  |u Division of Earth and Ocean Sciences Nicholas School of the Environment, Duke University, Durham, NC, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Bourqui  |D Michel  |u Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Leadbetter  |D Susan  |u Met Office, Exeter, UK  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3593-3607  |x 0930-7575  |q 45:11-12<3593  |1 2015  |2 45  |o 382