Oceanography The Official Magazine of
The Oceanography Society
Volume 29 Issue 02

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Volume 29, No. 2
Pages 232 - 241

Remotely Driven Anomalous Sea-Air Heat Flux Over the North Indian Ocean During the Summer Monsoon Season

G.S. Bhat Harindra J.S. Fernando
Article Abstract

The atmosphere typically receives heat from the open tropical ocean; an exception is the western and central Arabian Sea during the summer monsoon season. This article analyzes in situ observations from buoys and ships and examines mechanisms responsible for the reverse sea-air interfacial heat flux that have yet to be addressed. Key factors are the horizontal advection of heat and the heat flux derived via mixing and entrainment of air from above the atmospheric mixed layer in a Richardson number regime where shear-driven mixing would not normally be expected. This study invites a fresh look at the physics of entrainment and mixing in the atmospheric boundary layer. The reverse heat flux observations offer an opportunity to test the efficacy of physics encapsulated in boundary layer parameterization schemes for coupled models.

Citation

Bhat, G.S., and H.J.S. Fernando. 2016. Remotely driven anomalous sea-air heat flux over the north Indian Ocean during the summer monsoon season. Oceanography 29(2):232–241, https://doi.org/10.5670/oceanog.2016.55.

References

Anderson, J.L., V. Balaji, A.J. Broccoli, W.F. Cooke, T.L. Delworth, K.W. Dixon, L.J. Donner, K.A. Dunne, S.M. Freidenreich, S.T. Garner, and others. 2004. The New GFDL Global Atmosphere and Land Model AM2–LM2: Evaluation with prescribed SST simulations. Journal of Climate 17:4,641–4,673, https://doi.org/10.1175/JCLI-3223.1.

Bhat, G.S. 2005. Convection inhibition energy of the inversion and the suppressed rainfall over the Arabian Sea during July 2002. Mausam (ARMEX Special Issue) 56:89–96. 

Bhat, G.S., S. Gadgil, P.V. Harish Kumar, S.R. Kalsi, P. Madhusoodanan, V.S.N. Murty, C.V.K. Prasada Rao, V. Ramesh Babu, L.V.G. Rao, R.R. Rao, and others. 2001. BOBMEX: The Bay of Bengal Monsoon Experiment. Bulletin of the American the Meteorological Society 82:2,217–2,243, https://doi.org/10.1175/1520-0477(2001)082​<2217:BTBOBM>2.3.CO;2.

Dee, D.P., S.M. Uppalaa, A.J. Simmonsa, P. Berrisforda, P. Polia, S. Kobayashib, U. Andraec, M.A. Balmasedaa, G. Balsamoa, P. Bauera, and others. 2011. The ERA-Interim reanalysis: Configuration and performance of the data assimilation system. Quarterly Journal of the Royal Meteorological Society 137:553–597, https://doi.org/10.1002/qj.828.

Dopplick, T.G. 1979. Radiative heating of the global atmosphere: Corrigendum. Journal of Atmospheric Sciences 36:1,812–1,817, https://doi.org/10.1175/​1520-0469(1979)036<1812:RHOTGA>2.0.CO;2.

Drazin, P.G., and L.N. Howard. 1966. Hydrodynamic stability of parallel flow of inviscid fluid. Pp 1–89 in Advances in Applied Mechanics, vol. 9. Academic Press.

Fairall, C.W., E.F. Bradley, D.P. Rogers, J.B. Edson, and G.S. Young. 1996. Bulk parameterization of air-sea fluxes for Tropical Ocean-Global Atmosphere Coupled-Ocean Atmosphere Response Experiment. Journal of Geophysical Research 101(C2):3,747–3,764, https://doi.org/10.1029/95JC03205.

Findlater, J. 1969. A major low-level air current near the Indian Ocean during the northern summer. Quarterly Journal of the Royal Meteorological Society 95:362–380, https://doi.org/10.1002/qj.49709540409

Fischer, A.S., R.A. Weller, D.L. Rudnick, C.C. Eriksen, C.M. Lee, K.H. Brink, C.A. Fox, and R.R. Leben. 2002. Mesoscale eddies, coastal upwelling, and the upper-ocean heat budget in the Arabian Sea. Deep Sea Research Part II 49:2,231–2,264, https://doi.org/10.1016/S0967-0645(02)00036-X.

Gadgil, S. 2003. The Indian monsoon and its variability. Annual Review of Earth and Planetary Sciences 31:429-467, https://doi.org/10.1146/annurev.earth.31.100901.141251.

Ghosh, S.K. 1978. Influence of the Arabian Sea on the Indian summer monsoon. Tellus 30:117–125, https://doi.org/10.1111/j.2153-3490.1978.tb00825.x.

Holtslag, A.A.M., and B.A. Boville. 1993. Local versus nonlocal boundary-layer diffusion in a global climate model. Journal of Climate 6:1,825–1,842, https://doi.org/10.1175/1520-0442(1993)006​<1825:LVNBLD>2.0.CO;2.

Liu, W.T., K.B. Katsaros, and J.A. Businger. 1979. Bulk parameterization of air-sea exchanges of heat and water vapor including the molecular constraints at the interface. Journal of Atmospheric Sciences 36:1,722–1,735, https://doi.org/10.1175/1520-0469(1979)036​<1722:BPOASE>2.0.CO;2.

Lock, A.P., A.R. Brown, M.R. Bush, G.M. Martin, and R.N.B. Smith. 2000. A new boundary layer mixing scheme: Part I. Scheme description and single-column model tests. Monthly Weather Review 128:3,187–3,199, https://doi.org/10.1175/​1520-0493(2000)128<3187:ANBLMS>2.0.CO;2.

Lucas, A., E. Shroyer, H.W. Wijesekera, H.J.S. Fernando, E. D’Asarso, M. Ravichandran, S.U.P. Jinadasa, J.A. MacKinnon, J.D. Nash, R. Sharma, and others. 2014. Mixing to monsoons: Air-sea interactions in the Bay of Bengal. Eos, Transactions American Geophysical Union 95(30)269–270, https://doi.org/10.1002/2014EO300001.

McPhaden, M.J., G. Meyers, K. Ando, Y. Masumoto, V.S.N. Murty, M. Ravichandran, F. Syamsudin, J. Vialard, L. Yu, and W. Yu. 2009. RAMA: The Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction. Bulletin of the American Meteorological Society 90:459–480, https://doi.org/10.1175/2008BAMS2608.1.

Miles, J.W. 1986. Richardson’s criterion for the stability of stratified shear flow. Physics of Fluids 29:3,470–3,471, https://doi.org/​10.1063/1.865812.

Miles, J.W., and L.N. Howard. 1964. Note on a heterogeneous shear flow. Journal of Fluid Mechanics 20:331–336, https://doi.org/10.1017/S0022112064001252.

Rao, P.S. 2005. Arabian Sea monsoon experiment: An overview. Mausam 56:1–6.

Schott, F.A., S.-P. Xie, and J.P. McCreary Jr. 2009. Indian Ocean circulation and climate variability. Reviews of Geophysics 47, RG1002, https://doi.org/10.1029/2007RG000245.

Strang, E.J., and H.J.S. Fernando. 2001a. Entrainment and mixing in stratified shear flows. Journal of Fluid Mechanics 428:349–386, https://doi.org/10.1017/S0022112000002706.

Strang, E.J., and H.J.S. Fernando. 2001b. Vertical mixing and transports through a stratified shear layer. Journal of Physical Oceanography 31:2,026–2,048, https://doi.org/10.1175/1520-0485(2001)031​<2026:VMATTA>2.0.CO;2.

Tennekes, H., and A.G.M. Driedonks. 1981. Basic entrainment equations for the atmospheric boundary layer. Boundary Layer Meteorology 20:515–531, https://doi.org/10.1007/BF00122299.

Webster, P.J., V.O. Magana, T.N. Palmer, J. Shukla, R.A. Tomas, M. Yanai, and T. Yasunari. 1998. Monsoons: Processes, predictability, and prospects for prediction. Journal of Geophysical Research 103(C7):14,451–14,510, https://doi.org/​10.1029/97JC02719.

Weller, R.A., M.F. Baumgartner, S.A. Josey, A.S. Fischer, and J.C. Kindle. 1998. Atmospheric forcing in the Arabian Sea during 1994–1995: Observations and comparisons with climatology and models. Deep Sea Research Part II 45:1,961–1,999, https://doi.org/10.1016/S0967-0645(98)00060-5.

Wijesekera, H.W., E. Shroyer, A. Tandon, M. Ravichandran, D. Sengupta, P. Jinadasa, H.J.S. Fernando, N. Agrawal, K. Arulananthan, M. Baumgartner, and others. In press. ASIRI: An ocean-atmosphere initiative for Bay of Bengal. Bulletin of the American Meteorological Society, https://doi.org/10.1175/BAMS-D-14-00197.1.

Zeng, X., M. Zhao, and R.E. Dickinson. 1998. Intercomparison of bulk aerodynamic algorithms for computation of sea surface fluxes using TOGA COARE and TAO data. Journal of Climate 11:2,628–2,644, https://doi.org/10.1175/1520-0442(1998)011​<2628:IOBAAF>2.0.CO;2.