Imperial College London

DrArnaudCzaja

Faculty of Natural SciencesDepartment of Physics

Reader in Physical Oceanography
 
 
 
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Contact

 

+44 (0)20 7594 1789a.czaja

 
 
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Location

 

726Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
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47 results found

Hausmann U, Czaja A, Marshall J, 2017, Mechanisms controlling the SST air-sea heat flux feedback and its dependence on spatial scale, CLIMATE DYNAMICS, Vol: 48, Pages: 1297-1307, ISSN: 0930-7575

JOURNAL ARTICLE

Liang M, Czaja A, Graversen R, Tailleux Ret al., 2017, Poleward energy transport: is the standard definition physically relevant at all time scales?, Climate Dynamics, Pages: 1-13, ISSN: 0930-7575

© 2017 The Author(s) Poleward energy transport in the atmosphere and oceans constitutes an important branch of the global energy budget, and its role in the climate system has been the subject of many studies. In the atmosphere, the transport is affected by “eddies” and large scale meridional cells, both with zero net mass transport across latitude circles, but also partly by processes associated with a net transport of mass across latitude circles. The latter must cease to operate in steady state, but they may be significant when time variability of the heat budget is considered. Indeed, examination of reanalysis data on short (daily to monthly) timescales shows that mass variations on these timescales result in surprisingly large fluctuations (in excess of (Formula presented.) W = 1 PW) in the poleward heat transport. These fluctuations are referred to as “extensive”, for they primarily alter the mass integrated energy of the region considered, but not its averaged value. It is suggested that extensive fluctuations mask more meaningful climate signals present in the heat transport variability ‚Äčon monthly and interannual timescales, and a new formulation is proposed to isolate the latter. This new formulation is applied successfully to reanalysis data and climate model simulations.

JOURNAL ARTICLE

Messori G, Geen R, Czaja A, 2017, On the Spatial and Temporal Variability of Atmospheric Heat Transport in a Hierarchy of Models, JOURNAL OF THE ATMOSPHERIC SCIENCES, Vol: 74, Pages: 2163-2189, ISSN: 0022-4928

JOURNAL ARTICLE

Parfitt R, Czaja A, Kwon Y-O, 2017, The impact of SST resolution change in the ERA-Interim reanalysis on wintertime Gulf Stream frontal air-sea interaction, GEOPHYSICAL RESEARCH LETTERS, Vol: 44, Pages: 3246-3254, ISSN: 0094-8276

JOURNAL ARTICLE

Parfitt R, Czaja A, Seo H, 2017, A simple diagnostic for the detection of atmospheric fronts, GEOPHYSICAL RESEARCH LETTERS, Vol: 44, Pages: 4351-4358, ISSN: 0094-8276

JOURNAL ARTICLE

Sheldon L, Czaja A, Vanniere B, Morcrette C, Sohet B, Casado M, Smith Det al., 2017, A 'warm path' for Gulf Stream-troposphere interactions, TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY, Vol: 69, ISSN: 1600-0870

JOURNAL ARTICLE

Vanniere B, Czaja A, Dacre HF, 2017, Contribution of the cold sector of extratropical cyclones to mean state features over the Gulf Stream in winter, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 143, Pages: 1990-2000, ISSN: 0035-9009

JOURNAL ARTICLE

Vanniere BT, Czaja A, Dacre H, Woollings Tet al., 2017, A "Cold Path'' for the Gulf Stream-Troposphere Connection, JOURNAL OF CLIMATE, Vol: 30, Pages: 1363-1379, ISSN: 0894-8755

JOURNAL ARTICLE

Geen R, Czaja A, Haigh JD, 2016, The effects of increasing humidity on heat transport by extratropical waves, GEOPHYSICAL RESEARCH LETTERS, Vol: 43, Pages: 8314-8321, ISSN: 0094-8276

JOURNAL ARTICLE

Hausmann U, Czaja A, Marshall J, 2016, Estimates of Air-Sea Feedbacks on Sea Surface Temperature Anomalies in the Southern Ocean, JOURNAL OF CLIMATE, Vol: 29, Pages: 439-454, ISSN: 0894-8755

JOURNAL ARTICLE

Parfitt R, Czaja A, 2016, On the contribution of synoptic transients to the mean atmospheric state in the Gulf Stream region, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 142, Pages: 1554-1561, ISSN: 0035-9009

JOURNAL ARTICLE

Parfitt R, Czaja A, Minobe S, Kuwano-Yoshida Aet al., 2016, The atmospheric frontal response to SST perturbations in the Gulf Stream region, GEOPHYSICAL RESEARCH LETTERS, Vol: 43, Pages: 2299-2306, ISSN: 0094-8276

JOURNAL ARTICLE

Vanniere B, Czaja A, Dacre H, Woollings T, Parfitt Ret al., 2016, A potential vorticity signature for the cold sector of winter extratropical cyclones, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 142, Pages: 432-442, ISSN: 0035-9009

JOURNAL ARTICLE

Czaja A, Marshall J, 2015, Why is there net surface heating over the Antarctic Circumpolar Current?, OCEAN DYNAMICS, Vol: 65, Pages: 751-760, ISSN: 1616-7341

JOURNAL ARTICLE

Messori G, Czaja A, 2015, On local and zonal pulses of atmospheric heat transport in reanalysis data, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 141, Pages: 2376-2389, ISSN: 0035-9009

JOURNAL ARTICLE

O'Reilly CH, Czaja A, 2015, The response of the Pacific storm track and atmospheric circulation to Kuroshio Extension variability, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 141, Pages: 52-66, ISSN: 0035-9009

JOURNAL ARTICLE

Wang S, Toumi R, Czaja A, Van Kan Aet al., 2015, An analytic model of tropical cyclone wind profiles, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 141, Pages: 3018-3029, ISSN: 0035-9009

JOURNAL ARTICLE

Messori G, Czaja A, 2014, Some considerations on the spectral features of meridional heat transport by transient eddies, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 140, Pages: 1377-1386, ISSN: 0035-9009

JOURNAL ARTICLE

Sheldon L, Czaja A, 2014, Seasonal and interannual variability of an index of deep atmospheric convection over western boundary currents, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 140, Pages: 22-30, ISSN: 0035-9009

JOURNAL ARTICLE

Heaviside C, Czaja A, 2013, Deconstructing the Hadley cell heat transport, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 139, Pages: 2181-2189, ISSN: 0035-9009

JOURNAL ARTICLE

Messori G, Czaja A, 2013, On the sporadic nature of meridional heat transport by transient eddies, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 139, Pages: 999-1008, ISSN: 0035-9009

JOURNAL ARTICLE

Hausmann U, Czaja A, 2012, The observed signature of mesoscale eddies in sea surface temperature and the associated heat transport, DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, Vol: 70, Pages: 60-72, ISSN: 0967-0637

JOURNAL ARTICLE

O'Reilly CH, Czaja A, LaCasce JH, 2012, The emergence of zonal ocean jets under large-scale stochastic wind forcing, GEOPHYSICAL RESEARCH LETTERS, Vol: 39, ISSN: 0094-8276

JOURNAL ARTICLE

Czaja A, Blunt N, 2011, A new mechanism for ocean-atmosphere coupling in midlatitudes, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 137, Pages: 1095-1101, ISSN: 0035-9009

JOURNAL ARTICLE

Pauluis O, Czaja A, Korty R, 2010, The Global Atmospheric Circulation in Moist Isentropic Coordinates, JOURNAL OF CLIMATE, Vol: 23, Pages: 3077-3093, ISSN: 0894-8755

JOURNAL ARTICLE

Czaja A, 2009, Atmospheric Control on the Thermohaline Circulation, JOURNAL OF PHYSICAL OCEANOGRAPHY, Vol: 39, Pages: 234-247, ISSN: 0022-3670

JOURNAL ARTICLE

Czaja A, Hausmann U, 2009, Observations of Entry and Exit of Potential Vorticity at the Sea Surface, JOURNAL OF PHYSICAL OCEANOGRAPHY, Vol: 39, Pages: 2280-2294, ISSN: 0022-3670

JOURNAL ARTICLE

Howe N, Czaja A, 2009, A New Climatology of Air-Sea Density Fluxes and Surface Water Mass Transformation Rates Constrained by WOCE, JOURNAL OF PHYSICAL OCEANOGRAPHY, Vol: 39, Pages: 1432-1447, ISSN: 0022-3670

JOURNAL ARTICLE

Pauluis O, Czaja A, Korty R, 2008, The global atmospheric circulation on moist isentropes, SCIENCE, Vol: 321, Pages: 1075-1078, ISSN: 0036-8075

JOURNAL ARTICLE

Verdy A, Dutkiewicz S, Follows MJ, Marshall J, Czaja Aet al., 2007, Carbon dioxide and oxygen fluxes in the Southern Ocean: Mechanisms of interannual variability, GLOBAL BIOGEOCHEMICAL CYCLES, Vol: 21, ISSN: 0886-6236

JOURNAL ARTICLE

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