Cite this paper:
Guoqing HAN, Changming DONG, Jingsong YANG, Yu LIU. Sri Lanka seasonal warm pools[J]. Journal of Oceanology and Limnology, 2021, 39(2): 437-446

Sri Lanka seasonal warm pools

Guoqing HAN1,2, Changming DONG1,3, Jingsong YANG2,3, Yu LIU3,4
1 School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2 State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;
3 Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China;
4 Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316000, China
Abstract:
Sri Lanka seasonal warm pools (SSWPs) with high sea surface temperature (SST) (greater than 29.6℃ in summer and greater than 28℃ in winter) around the Sri Lanka Island are discovered using 37-year (1982-2018) satellite remote sensing SST data. It is identified that during the onset of the summer (winter) monsoon, the maximum SST in the SSWPs can be 1.8℃ (0.8℃) higher than the surrounding ocean. Due to orographic influences, the wind intensity on the leeward side of Sri Lanka is weakened, reducing evaporation and oceanic mixing, and resulting in higher SST. The analysis of the long-term data shows that SSWPs are related to El Niño-Southern Oscillation (ENSO) events. Background currents are also found to play important roles in governing the SSWPs intensities through the heat advection.
Key words:    Sri Lanka|monsoon|warm pool   
Received: 2020-03-10   Revised: 2020-04-11
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Articles by Changming DONG
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References:
Aiken C M, Moore A M, Middleton J H. 2002. The nonnormality of coastal ocean flows around obstacles, and their response to stochastic forcing. Journal of Physical Oceanography, 32(10):2 955-2 974, https://doi.org/10.1175/1520-0485(2002)032<2955:TNOCOF>2.0.CO;2.
Andrade I, Sangrà P, Hormazabal S, Correa-Ramirez M. 2014. Island mass effect in the Juan Fernández Archipelago(33°S), Southeastern Pacific. Deep Sea Research Part I:Oceanographic Research Papers, 84:86-99, https://doi.org/10.1016/j.dsr.2013.10.009.
Barton E D, Basterretxea G, Flament P, Mitchelson-Jacob E G, Jones B, Arístegui J, Herrera F. 2000. Lee region of Gran Canaria. Journal of Geophysical Research:Oceans, 105(C7):17 173-17 193, https://doi.org/10.1029/2000jc900010.
Barton E D, Flament P, Dodds H, Mitchelson-Jacob E G. 2001. Mesoscale structures viewed by SAR and AVHRR near the Canary islands. Scientia Marina, 65(S1):167-175, https://doi.org/10.3989/scimar.2001.65s1167.
Caldeira R M A, Marchesiello P, Nezlin N P, DiGiacomo P M, McWilliams J C. 2005. Island wakes in the Southern California Bight. Journal of Geophysical Research-Oceans, 110(C11):C11012, https://doi.org/10.1029/2004JC002675.
Caldeira R M A, Marchesiello P. 2002. Ocean response to wind sheltering in the Southern California Bight. Geophysical Research Letters, 29(13):13-1-13-4, https://doi.org/10.1029/2001GL014563.
Dietrich D E, Bowman M J, Lin C A, Mestas-Nunez A. 1996. Numerical studies of small island wakes in the ocean. Geophysical and Astrophysical Fluid Dynamics, 83(3-4):195-231, https://doi.org/10.1080/03091929608208966.
Dong C M, Cao Y H, McWilliams J C. 2018. Island wakes in shallow water. Atmosphere-Ocean, 56(2):96-103, https://doi.org/10.1080/07055900.2018.1448750.
Dong C M, McWilliams J C, Shchepetkin A F. 2007. Island wakes in deep water. Journal of Physical Oceanography, 37(4):962-981, https://doi.org/10.1175/JPO3047.1.
Dong C M, McWilliams J C. 2007. A numerical study of island wakes in the Southern California Bight. Continental Shelf Research, 27(9):1 233-1 248, https://doi.org/10.1016/j.csr.2007.01.016.
Goswami B N. 1998. Interannual variations of Indian summer monsoon in a GCM:external conditions versus internal feedbacks. Journal of Climate, 11(4):501-522, https://doi.org/10.1175/1520-0442(1998)011<0501:ivoism>2.0.co;2.
Han G Q, Dong C M, Li J D, Yang J S, Wang Q Y, Liu Y, Sommeria J. 2019. SST anomalies in the Mozambique Channel using remote sensing and numerical modeling data. Remote Sensing, 11(9):1 112, https://doi.org/10.3390/rs11091112.
Hsu P C, Chang M H, Lin C C, Huang S J, Ho C R. 2017. Investigation of the island-induced ocean vortex train of the Kuroshio Current using satellite imagery. Remote Sensing of Environment, 193:54-64, https://doi.org/10.1016/j.rse.2017.02.025.
Krishnamurthy V, Goswami B N. 2000. Indian monsoon-ENSO relationship on interdecadal timescale. Journal of Climate, 13(3):579-595, https://doi.org/10.1175/1520-0442(2000)0132.0.CO;2.
Li J D, Liang C J, Tang Y M, Dong C M, Chen D K, Liu X H, Jin W F. 2016. A new dipole index of the salinity anomalies of the tropical Indian Ocean. Scientific Reports, 6:24 260, https://doi.org/10.1038/srep24260.
Li J D, Liang C J, Tang Y M, Liu X H, Lian T, Shen Z Q, Li X J. 2018. Impacts of the IOD-associated temperature and salinity anomalies on the intermittent equatorial undercurrent anomalies. Climate Dynamics, 51(4):1 391-1 409, https://doi.org/10.1007/s00382-017-3961-x.
Li J X, Wang G H, Xie S P, Zhang R, Sun Z Y. 2012. A winter warm pool southwest of Hainan Island due to the orographic wind wake. Journal of Geophysical Research-Oceans, 117(C8):C08036, https://doi.org/10.1029/2012JC008189.
Luis A J, Kawamura H. 2000. Wintertime wind forcing and sea surface cooling near the south India tip observed using NSCAT and AVHRR. Remote Sensing of Environment, 73(1):55-64, https://doi.org/10.1016/s0034-4257(00)00081-x.
Luis A J, Kawamura H. 2001. Characteristics of atmospheric forcing and SST cooling events in the Gulf of Mannar during winter monsoon. Remote Sensing of Environment, 77(2):139-148, https://doi.org/10.1016/s0034-4257(01)00201-2.
Luis A J, Kawamura H. 2002. Dynamics and mechanism for sea surface cooling near the Indian tip during winter monsoon. Journal of Geophysical Research, 107(C11):8-1-8-13, https://doi.org/10.1029/2000jc000455.
Rao R R, Girish Kumar M S, Ravichandran M, Gopalakrishna V V, Thadathil P. 2008. A cold pool south of Indo-Sri Lanka channel and its intrusion into the Southeastern Arabian Sea during winter. Deep Sea Research Part I:Oceanographic Research Papers, 55(8):1 009-1 020, https://doi.org/10.1016/j.dsr.2008.04.006.
Reynolds R W, Smith T M, Liu C Y, Chelton D B, Casey K S, Schlax M G. 2007. Daily high-resolution-blended analyses for sea surface temperature. Journal of Climate, 20(22):5 473-5 496, https://doi.org/10.1175/2007jcli1824.1.
Saha S, Moorthi S, Pan H L, Wu X R, Wang J D, Nadiga S, Tripp P, Kistler R, Woollen J, Behringer D, Liu H X, Stokes D, Grumbine R, Gayno G, Wang J, Hou Y T, Chuang H Y, Juang H M H, Sela J, Iredell M, Treadon R, Kleist D, Van Delst P, Keyser D, Derber J, Ek M, Meng J, Wei H L, Yang R Q, Lord S, van den Dool H, Kumar A, Wang W Q, Long C, Chelliah M, Xue Y, Huang B Y, Schemm J K, Ebisuzaki W, Lin R, Xie P P, Chen M Y, Zhou S T, Higgins W, Zou C Z, Liu Q H, Chen Y, Han Y, Cucurull L, Reynolds R W, Rutledge G, Goldberg M. 2010. The NCEP climate forecast system reanalysis. Bulletin of the American Meteorological Society, 91(8):1 015-1 057, https://doi.org/10.1175/2010BAMS3001.1.
Saha S, Moorthi S, Wu X R, Wang J D, Nadiga S, Tripp P, Behringer D, Hou Y T, Chuang H Y, Iredell M, Ek M, Meng J, Yang R Q, Mendez M P, van den Dool H, Zhang Q, Wang W Q, Chen M Y, Becker E. 2014. The NCEP Climate Forecast System Version 2. Journal of Climate, 27(6):2 185-2 208, https://doi.org/10.1175/JCLI-D-12-00823.1.
Tomczak M. 1988. Island wakes in deep and shallow water. Journal of Geophysical Research, 93(C5):5 153, https://doi.org/10.1029/JC093iC05p05153.
Xie S P, Liu W T, Liu Q Y, Nonaka M. 2001. Far-reaching effects of the Hawaiian Islands on the Pacific oceanatmosphere system. Science, 292(5524):2 057-2 060, https://doi.org/10.1126/science.1059781.
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