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Author Bashmachnikov, I.L.; Fedorov, A.M.; Vesman, A.V.; Belonenko, T.V.; Dukhovskoy, D.S.
Title Thermohaline convection in the subpolar seas of the North Atlantic from satellite and in situ observations. Part 2: indices of intensity of deep convection Type $loc['typeJournal Article']
Year 2019 Publication Abbreviated Journal
Volume 16 Issue 1 Pages 191-201
Keywords deep convection, assimilation of satellite data, altimetry, water density, the Greenland Sea, the Labrador Sea, the Irminger Sea
Abstract Variation in locations of the maximum development of deep convection in the subpolar seas, taking into account their small dimensions, represent difficulty in identifying its interannual variability from usually sparse in situ data. In this work, the interannual variability of the maximum convection depth, is obtained using one of the most complete datasets ARMOR, which combines in situ and satellite data. The convection depths, derived from ARMOR, are used for testing the efficiency of two indices of convection intensity: (1) sea-level anomalies from satellite altimetry and (2) the integral water density in the areas of the most frequent development of deep convection. The first index, capturing some details, shows low correlations with the interannual variability of the deep convection intensity. The second index shows high correlation with the deep convection intensity in the Greenland, Irminger and Labrador seas. Asynchronous variations in the deep convection intensity in the Labrador-Irminger seas and in the Greenland Sea are obtained. In the Labrador and in the Irminger seas, the quasi-seven-year variations in the convection intensity are identified.
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Funding Approved $loc['no']
Call Number COAPS @ user @ Serial 1089
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Author Hu, Z.-Z.; Huang, B.; Kinter, J.L.; Wu, Z.; Kumar, A.
Title Connection of the stratospheric QBO with global atmospheric general circulation and tropical SST. Part II: interdecadal variations Type $loc['typeJournal Article']
Year 2012 Publication Climate Dynamics Abbreviated Journal Clim Dyn
Volume 38 Issue 1-2 Pages 25-43
Keywords Stratospheric QBO; Tropical Pacific SST; Interdecadal variation; Walker circulation; Tropical deep convection; ERA40 and NCEP/NCAR reanalyses; ENSO
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0930-7575 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 260
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Author Huang, B.; Hu, Z.-Z.; Kinter, J.L.; Wu, Z.; Kumar, A.
Title Connection of stratospheric QBO with global atmospheric general circulation and tropical SST. Part I: methodology and composite life cycle Type $loc['typeJournal Article']
Year 2012 Publication Climate Dynamics Abbreviated Journal Clim Dyn
Volume 38 Issue 1-2 Pages 1-23
Keywords Stratospheric QBO; Tropical Pacific SST; Walker circulation; Deep convection; Atmospheric stability; ERA40 and NCEP/NCAR reanalyses
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0930-7575 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 259
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Author Liu, Y.; Tan, Z.-M.; Wu, Z.
Title Noninstantaneous Wave-CISK for the Interaction between Convective Heating and Low-Level Moisture Convergence in the Tropics Type $loc['typeJournal Article']
Year 2019 Publication Journal of the Atmospheric Sciences Abbreviated Journal J. Atmos. Sci.
Volume 76 Issue 7 Pages 2083-2101
Keywords Convection; Diabatic heating; Moisture; moisture budget
Abstract The interaction between tropical convective heating and thermally forced circulation is investigated using a global dry primitive-equation model with the parameterization of wave-conditional instability of the second kind (CISK). It is demonstrated that deep convective heating can hardly sustain itself through the moisture convergence at low levels regardless of the fraction of immediate consumption of converged moisture. In contrast, when the fraction is large, shallow convective heating and its forced circulation exhibit preferred growth of small scales. As the “CISK catastrophe” mainly comes from the instantaneous characters of moisture-convection feedback in the conventional wave-CISK, a noninstantaneous wave-CISK is proposed, which highlights the accumulation-consumption (AC) time scale for the convective heating accumulation and/or the converged moisture consumption. In the new wave-CISK, once moisture is converged, the release of latent heat takes place gradually within an AC time scale. In this sense, convective heating is not only related to the instantaneous moisture convergence at the current time, but also to that which occurred in the past period of the AC time scale. The noninstantaneous wave-CISK could guarantee the occurrence of convective heating and/or moisture convergence at larger scales, and then favor the growth of long waves, and thus solve the problem of CISK catastrophe. With the new wave-CISK and AC time scale of 2 days, the simulated convective heating-driven system bears a large similarity to that of the observed convectively coupled Kelvin wave.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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ISSN 0022-4928 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @ Serial 1065
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Author Mizoguchi, K.-ichi
Title Convective activity in the Labrador Sea: Preconditioning associated with decadal variability in subsurface ocean stratification Type $loc['typeJournal Article']
Year 2003 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.
Volume 108 Issue C10 Pages
Keywords decadal oscillation; North Atlantic; convection; Labrador Sea
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0148-0227 ISBN Medium
Area Expedition Conference
Funding NOAA, NASA, ONR Approved $loc['no']
Call Number COAPS @ mfield @ Serial 840
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Author Rousset, C.; Houssais, M.-N.; Chassignet, E.P.
Title A multi-model study of the restratification phase in an idealized convection basin Type $loc['typeJournal Article']
Year 2009 Publication Ocean Modelling Abbreviated Journal Ocean Modelling
Volume 26 Issue 3-4 Pages 115-133
Keywords Baroclinic instability; Convection basin; Model intercomparison; Restratification; Eddies; Idealized simulations
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1463-5003 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 402
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