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Author (up) Bashmachnikov, I.L.; Fedorov, A.M.; Vesman, A.V.; Belonenko, T.V.; Dukhovskoy, D.S. url  openurl
  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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  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 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ user @ Serial 1089  
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Author (up) Hu, Z.-Z.; Huang, B.; Kinter, J.L.; Wu, Z.; Kumar, A. url  doi
openurl 
  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  
  Abstract  
  Address  
  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  
Permanent link to this record
 

 
Author (up) Huang, B.; Hu, Z.-Z.; Kinter, J.L.; Wu, Z.; Kumar, A. url  doi
openurl 
  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  
  Abstract  
  Address  
  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 259  
Permanent link to this record
 

 
Author (up) Liu, Y.; Tan, Z.-M.; Wu, Z. url  doi
openurl 
  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  
  Series Volume Series Issue Edition  
  ISSN 0022-4928 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ user @ Serial 1065  
Permanent link to this record
 

 
Author (up) Mizoguchi, K.-ichi url  doi
openurl 
  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  
  Abstract  
  Address  
  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 (up) Rousset, C.; Houssais, M.-N.; Chassignet, E.P. url  doi
openurl 
  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  
  Abstract  
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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 1463-5003 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 402  
Permanent link to this record
 

 
Author (up) Zou, S.; Lozier, M.S.; Xu, X. url  doi
openurl 
  Title Latitudinal Structure of the Meridional Overturning Circulation Variability on Interannual to Decadal Time Scales in the North Atlantic Ocean Type $loc['typeJournal Article']
  Year 2020 Publication Journal of Climate Abbreviated Journal J. Climate  
  Volume 33 Issue 9 Pages 3845-3862  
  Keywords Deep convection; Ocean circulation; Thermocline circulation  
  Abstract The latitudinal structure of the Atlantic meridional overturning circulation (AMOC) variability in the North Atlantic is investigated using numerical results from three ocean circulation simulations over the past four to five decades. We show that AMOC variability south of the Labrador Sea (53°N) to 25°N can be decomposed into a latitudinally coherent component and a gyre-opposing component. The latitudinally coherent component contains both decadal and interannual variabilities. The coherent decadal AMOC variability originates in the subpolar region and is reflected by the zonal density gradient in that basin. It is further shown to be linked to persistent North Atlantic Oscillation (NAO) conditions in all three models. The interannual AMOC variability contained in the latitudinally coherent component is shown to be driven by westerlies in the transition region between the subpolar and the subtropical gyre (40°–50°N), through significant responses in Ekman transport. Finally, the gyre-opposing component principally varies on interannual time scales and responds to local wind variability related to the annual NAO. The contribution of these components to the total AMOC variability is latitude-dependent: 1) in the subpolar region, all models show that the latitudinally coherent component dominates AMOC variability on interannual to decadal time scales, with little contribution from the gyre-opposing component, and 2) in the subtropical region, the gyre-opposing component explains a majority of the interannual AMOC variability in two models, while in the other model, the contributions from the coherent and the gyre-opposing components are comparable. These results provide a quantitative decomposition of AMOC variability across latitudes and shed light on the linkage between different AMOC variability components and atmospheric forcing mechanisms.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0894-8755 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ user @ Serial 1106  
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