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Author Ali, A.; Christensen, K.H.; Breivik, Ø.; Malila, M.; Raj, R.P.; Bertino, L.; Chassignet, E.P.; Bakhoday-Paskyabi, M. url  doi
openurl 
  Title A comparison of Langmuir turbulence parameterizations and key wave effects in a numerical model of the North Atlantic and Arctic Oceans Type $loc['typeJournal Article']
  Year 2019 Publication Ocean Modelling Abbreviated Journal Ocean Modelling  
  Volume 137 Issue Pages 76-97  
  Keywords Langmuir mixing parameterization Mixed layer depth Sea surface temperature Ocean heat content Stokes penetration depth  
  Abstract Five different parameterizations of Langmuir turbulence (LT) effect are investigated in a realistic model of the North Atlantic and Arctic using realistic wave forcing from a global wave hindcast. The parameterizations mainly apply an enhancement to the turbulence velocity scale, and/or to the entrainment buoyancy flux in the surface boundary layer. An additional run is also performed with other wave effects to assess the relative importance of Langmuir turbulence, namely the Coriolis-Stokes forcing, Stokes tracer advection and wave-modified momentum fluxes. The default model (without wave effects) underestimates the mixed layer depth in summer and overestimates it at high latitudes in the winter. The results show that adding LT mixing reduces shallow mixed layer depth (MLD) biases, particularly in the subtropics all year-around, and in the Nordic Seas in summer. There is overall a stronger relative impact on the MLD during winter than during summer. In particular, the parameterization with the most vigorous LT effect causes winter MLD increases by more than 50% relative to a control run without Langmuir mixing. On the contrary, the parameterization which assumes LT effects on the entrainment buoyancy flux and accounts for the Stokes penetration depth is able to enhance the mixing in summer more than in winter. This parametrization is also distinct from the others because it restrains the LT mixing in regions of deep MLD biases, so it is the preferred choice for our purpose. The different parameterizations do not change the amplitude or phase of the seasonal cycle of heat content but do influence its long-term trend, which means that the LT can influence the drift of ocean models. The combined impact on water mass properties from the Coriolis-Stokes force, the Stokes drift tracer advection, and the wave-dependent momentum fluxes is negligible compared to the effect from the parameterized Langmuir turbulence.  
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  Corporate Author Thesis  
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  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 @ user @ Serial 1001  
Permanent link to this record
 

 
Author Ali, M.; Singh, N.; Kumar, M.; Zheng, Y.; Bourassa, M.; Kishtawal, C.; Rao, C. url  doi
openurl 
  Title Dominant Modes of Upper Ocean Heat Content in the North Indian Ocean Type $loc['typeJournal Article']
  Year 2018 Publication Climate Abbreviated Journal Climate  
  Volume 6 Issue 3 Pages 71  
  Keywords ocean heat content; tropical cyclone heat potential; dominant modes; North Indian Ocean; SUMMER MONSOON; INTENSIFICATION; INTENSITY; PACIFIC  
  Abstract The thermal energy needed for the development of hurricanes and monsoons as well as any prolonged marine weather event comes from layers in the upper oceans, not just from the thin layer represented by sea surface temperature alone. Ocean layers have different modes of thermal energy variability because of the different time scales of ocean-atmosphere interaction. Although many previous studies have focused on the influence of upper ocean heat content (OHC) on tropical cyclones and monsoons, no study thus farparticularly in the North Indian Ocean (NIO)has specifically concluded the types of dominant modes in different layers of the ocean. In this study, we examined the dominant modes of variability of OHC of seven layers in the NIO during 1998-2014. We conclude that the thermal variability in the top 50 m of the ocean had statistically significant semiannual and annual modes of variability, while the deeper layers had the annual mode alone. Time series of OHC for the top four layers were analyzed separately for the NIO, Arabian Sea, and Bay of Bengal. For the surface to 50 m layer, the lowest and the highest values of OHC were present in January and May every year, respectively, which was mainly caused by the solar radiation cycle.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2225-1154 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ rl18 @ Serial 986  
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Author Bentamy, A.; Piollé, J.F.; Grouazel, A.; Danielson, R.; Gulev, S.; Paul, F.; Azelmat, H.; Mathieu, P.P.; von Schuckmann, K.; Sathyendranath, S.; Evers-King, H.; Esau, I.; Johannessen, J.A.; Clayson, C.A.; Pinker, R.T.; Grodsky, S.A.; Bourassa, M.; Smith, S.R.; Haines, K.; Valdivieso, M.; Merchant, C.J.; Chapron, B.; Anderson, A.; Hollmann, R.; Josey, S.A. url  doi
openurl 
  Title Review and assessment of latent and sensible heat flux accuracy over the global oceans Type $loc['typeJournal Article']
  Year 2017 Publication Remote Sensing of Environment Abbreviated Journal Remote Sensing of Environment  
  Volume 201 Issue Pages 196-218  
  Keywords Ocean Heat Flux; Latent heat flux; Sensible heat flux; Ocean heat content; Scatterometer; Surface wind; Specfic air humidity; OceanSites; Remotely sensed data  
  Abstract  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0034-4257 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 232  
Permanent link to this record
 

 
Author Bhowmick, S. A.; Agarwal, N.; Ali, M. M.; Kishtawal, C. M.; Sharma, R. url  doi
openurl 
  Title Role of ocean heat content in boosting post-monsoon tropical storms over Bay of Bengal during La-Nina events Type $loc['typeJournal Article']
  Year 2019 Publication Climate Dynamics Abbreviated Journal  
  Volume 52 Issue 12 Pages 7225-7234  
  Keywords La-Niña; Bay of Bengal; Tropical cyclones; Ocean heat content  
  Abstract This study aims to analyze the role of ocean heat content in boosting the post-monsoon cyclonic activities over Bay of Bengal during La-Niña events. In strong La-Niña years, accumulated cyclone energy in Bay of Bengal is much more as compared to any other year. It is observed that during late June to October of moderate to strong La-Nina years, western Pacific is warmer. Sea surface temperature anomaly of western Pacific Ocean clearly indicates the presence of relatively warmer water mass in the channel connecting the Indian Ocean and Pacific Ocean, situated above Australia. Ocean currents transport the heat zonally from Pacific to South eastern Indian Ocean. Excess heat of the southern Indian Ocean is eventually transported to eastern equatorial Indian Ocean through strong geostrophic component of ocean current. By September the northward transport of this excess heat from eastern equatorial Indian Ocean to Bay of Bengal takes place during La-Nina years boosting the cyclonic activities thereafter.  
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  Series Editor Series Title Abbreviated Series Title  
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  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 71  
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Author Chen, X.; Zhang, Y.; Zhang, M.; Feng, Y.; Wu, Z.; Qiao, F.; Huang, N.E. url  doi
openurl 
  Title Intercomparison between observed and simulated variability in global ocean heat content using empirical mode decomposition, part I: modulated annual cycle Type $loc['typeJournal Article']
  Year 2013 Publication Climate Dynamics Abbreviated Journal Clim Dyn  
  Volume 41 Issue 11-12 Pages 2797-2815  
  Keywords Ocean heat content; Modulated annual cycle; Empirical mode decomposition; Instantaneous frequency; Instantaneous amplitude; CMIP3  
  Abstract  
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  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 209  
Permanent link to this record
 

 
Author Griffies, S.M.; Yin, J.; Durack, P.J.; Goddard, P.; Bates, S.C.; Behrens, E.; Bentsen, M.; Bi, D.; Biastoch, A.; Böning, C.W.; Bozec, A.; Chassignet, E.; Danabasoglu, G.; Danilov, S.; Domingues, C.M.; Drange, H.; Farneti, R.; Fernandez, E.; Greatbatch, R.J.; Holland, D.M.; Ilicak, M.; Large, W.G.; Lorbacher, K.; Lu, J.; Marsland, S.J.; Mishra, A.; George Nurser, A.J.; Salas y Mélia, D.; Palter, J.B.; Samuels, B.L.; Schröter, J.; Schwarzkopf, F.U.; Sidorenko, D.; Treguier, A.M.; Tseng, Y.-heng; Tsujino, H.; Uotila, P.; Valcke, S.; Voldoire, A.; Wang, Q.; Winton, M.; Zhang, X. url  doi
openurl 
  Title An assessment of global and regional sea level for years 1993-2007 in a suite of interannual CORE-II simulations Type $loc['typeJournal Article']
  Year 2014 Publication Ocean Modelling Abbreviated Journal Ocean Modelling  
  Volume 78 Issue Pages 35-89  
  Keywords Sea level; CORE global ocean-ice simulations; Steric sea level; Global sea level; Ocean heat content  
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  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 128  
Permanent link to this record
 

 
Author Krishnamurti, T.N.; Jana, S.; Krishnamurti, R.; Kumar, V.; Deepa, R.; Papa, F.; Bourassa, M.A.; Ali, M.M. url  doi
openurl 
  Title Monsoonal intraseasonal oscillations in the ocean heat content over the surface layers of the Bay of Bengal Type $loc['typeJournal Article']
  Year 2017 Publication Journal of Marine Systems Abbreviated Journal Journal of Marine Systems  
  Volume 167 Issue Pages 19-32  
  Keywords Intraseasonal oscillations; Ocean heat content; Bay of Bengal  
  Abstract  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0924-7963 ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 64  
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Author Nagamani, P.V.; Ali, M.M.; Goni, G.J.; Udaya Bhaskar, T.V.S.; McCreary, J.P.; Weller, R.A.; Rajeevan, M.; Gopala Krishna, V.V.; Pezzullo, J.C. url  doi
openurl 
  Title Heat content of the Arabian Sea Mini Warm Pool is increasing Type $loc['typeJournal Article']
  Year 2016 Publication Atmospheric Science Letters Abbreviated Journal Atmos. Sci. Lett.  
  Volume 17 Issue 1 Pages 39-42  
  Keywords tropical cyclone heat potential; Arabian Sea Mini Warm Pool; satellite altimetry; ocean heat content; all India monsoon rainfall  
  Abstract  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1530261X ISBN Medium  
  Area Expedition Conference  
  Funding Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 47  
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