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Annual and interannual variations of the Western Pacific Warm Pool volume and sources of warm water revealed by Argo data

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Abstract

Based on gridded Argo profile data from January 2004 to December 2010, together with the P-vector inverse method, the three-dimensional structure, annual and inter-annual variations in volume of the Western Pacific Warm Pool (WPWP) are studied. The variations of latitudinal and longitudinal warm water flowing into and out of the WPWP and the probable mechanism of warm water maintenance are also discussed. From the surface to the bottom, climatic WPWP tilts southward and its area decreases. The maximum depth could extend to 120 m, such that its volume could attain 1.86×1015 m3. Annual variation of the WPWP volume shows two obvious peaks that occur in June and October, whereas its inter-annual variations are related to ENSO events. Based on a climatic perspective, the warm water flowing latitudinally into the pool is about 52 Sv, which is mainly through upper layers and via the eastern boundary. Latitudinally, warm water flowing outward is about 49 Sv, and this is mainly through lower layers and via the western boundary. In contrast, along the latitude, warm water flowing into and out of the pool is about 28 Sv and 23 Sv, respectively. Annual and inter-annual variations of the net transportation of the warm water demonstrate that the WPWP mainly loses warm water in the west-east direction, whereas it receives warm water from the north-south direction. The annual variation of the volume of WPWP is highly related to the annual variation of the net warm water transportation, however, they are not closely related on inter-annual time scale. On the inter-annual time scale, influences of ENSO events on the net warm water transportation in the north-south direction are much more than that in the west-east direction. Although there are some limitations and simplifications when using the P-vector method, it could still help improve our understanding of the WPWP, especially regarding the sources of the warm water.

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References

  • Bjerknes J. 1966. A possible response of the atmospheric Hadley circulation to equatorial anomalies of ocean temperature. Tellus Ser A-Dyn Meeorol Oceanol, 18: 820–829

    Article  Google Scholar 

  • Chao J P, Yuan S Y, Chao Q C. 2003. The origin of warm water mass in “warm pool” subsurface of the western tropical pacific-the analysis of the 1997–1998 El Nino (in Chinese). Chin J Atmos Sci, 27: 145–151

    Google Scholar 

  • Chu P C. 1994. P-vector inverse method. Ocean Modelling, 114: 23–26

    Google Scholar 

  • Chu P C. 1995. P-vector method for determining absolute velocity from hydrographic data. J Mar Technol Soc, 29: 3–14

    Google Scholar 

  • Chu P C. 2000. P-vector spirals and determination of absolute velocities. J Oceanogr Oceanogr Soc Jpn, 56: 591–599

    Google Scholar 

  • Chu P C, Lan J, Fan C W. 2001. Japan sea thermohaline structure and circulation. Part II: A variational P-vector method. J Phys Oceanogr, 31: 2886–2902

    Article  Google Scholar 

  • Clement A C, Seager R, Murtugudde R. 2005. Why are there tropical warm pools? J Clim, 18: 5294–5311

    Article  Google Scholar 

  • Dean R, John G. 2009. The 2004–2008 mean and annual cycle of temperature, salinity, and steric height in the global ocean from the Argo program. Prog Oceanogr, 82: 81–100

    Article  Google Scholar 

  • Fu C, Diaz H F, Fletcher J O. 1986. Characteristics of the response of sea surface temperature in the central Pacific associated with warm episodes of the Southern Oscillation. Mon Weather Rev, 114: 1716–1738

    Article  Google Scholar 

  • Gill A E. 1983. An estimation of sea-level and surface-current anomalies during the 1972 El Nino and consequent thermal effects. J Phys Oceanogr, 13: 586–606

    Article  Google Scholar 

  • Gill A E, Rasmusson E M. 1983. The 1982–83 climate anomaly in the equatorial Pacific. Nature, 306: 229–234

    Article  Google Scholar 

  • Gordon A. 1986. Interocean exchange of thermocline water. J Geophys Res, 91: 5037–5046

    Article  Google Scholar 

  • Harmann D L, Michelsen M L. 1993. Large-scale effects on the regulation of tropical sea surface temperature. J Clim, 6: 2049–2062

    Article  Google Scholar 

  • Ho C R, Yan X H, Zhang Q. 1995. Satellite observation of upper-layer variabilities in the western Pacific warm pool. Bull Amer Meteorol Soc, 76: 669–679

    Article  Google Scholar 

  • Hu D, Yu L. 2008. An approach to prediction of the South China Sea summer monsoon onset. Chin J Oceanol Limnol, 26: 421–424

    Article  Google Scholar 

  • Hu S J. 2013. On the vatiability of the western Pacific warm pool and its mechanism (in Chinese). Doctororal Dissertation. Beijing: University of Chinese Academy of Sciences

    Google Scholar 

  • Hu S J, Hu D. 2012. Heat center of the western Pacific warm pool. Chin J Oceanol Limnol, 30: 169–176

    Article  Google Scholar 

  • Huang Q Z, Wang W Z, Fu S C. 1994. Calculation on middle and lower layers’ circulation near Nansha Archipelago (in Chinese). J Tropic Oceanogr, 13: 33–39

    Google Scholar 

  • Huang R H, Sun F Y. 1994. Impact of the convective activities over the western tropical Pacific warm pool on the intraseasonal variability of the East Asian Summer Monsoon (in Chinese). Chin J Atmos Sci, 18: 456–465

    Google Scholar 

  • Kim S T, Yu J Y, Lu M M. 2012. The distinct behaviors of Pacific and Indian Ocean warm pool properties on seasonal and inter-annual time scales. J Geophys Res, 117: D05128

    Google Scholar 

  • Li C Y, Mu M Q. 1999. El Nino occurrence and sub-surface ocean temperature anomalies in the Pacific warm pool (in Chinese). Chin J Atmos Sci, 23: 513–521

    Google Scholar 

  • Li W B, Zhou C P. 1998. The relationship between tropical western pacific warm pool and Subtropical high (in Chinese). Acta Met Eorol Sin, 56: 619–626

    Google Scholar 

  • Long B S, Li B C, Zou E M. 1998. Anomalous eastward displamentof the western tropical Pacific warm pool and warming of the eastern tropical Pacific (in Chinese). Acta Oceanol Sin, 20: 35–42

    Google Scholar 

  • Meng X, Wu D. 2002. Contrast between the climatic states of the warm pool in the Indian Ocean and in the Pacific Ocean. J Ocean Univ Chin, 1: 119–124

    Google Scholar 

  • Miller R L. 1997. Tropical thermostats and low cloud cove. J Clim, 10: 409–440

    Article  Google Scholar 

  • Picaut J, Delcroix T, Ioualalen M et al. 1995. Diagnostic of the latitudinal displacement of the warm pool during El Nino and La Nina. Proceedings of the International Scientific Conference on the Tropical Ocean-Atmosphere Programme. 387

    Google Scholar 

  • Picaut J, Ioualalen M, Menkes C, et al.. 1996. Mechanism of the latitudinal displacement of the western Pacific warm pool: Implications for ENSO. Science, 274: 1486–1489

    Article  Google Scholar 

  • Pierrehumbert R T. 1995. Thermostats, radiator fins, and the runaway greenhouse. J Atmos Sci, 52: 1784–1806

    Article  Google Scholar 

  • Qi Q H, Zhang Q L, Hou Y J. 2008. Zonal displament of the western Pacific warm pool and its effects on ENSO (in Chinese). Oceanol Limnol Sin, 39: 66–73

    Google Scholar 

  • Ramanathan V. Collins W. 1991. Thermodynamic regulation of ocean warming by cirrus clouds deduced from observation of the 1987 El Nino. Nature, 351: 27–32

    Article  Google Scholar 

  • Schneider N, Barnett T, Latif M., Stockdale T. 1996. Warm pool physics in a coupled GCM. J Clim, 9: 219–239

    Article  Google Scholar 

  • Toole J M, Zou E, Millard R C. 1988. On the circulation of the upper waters in the western equatorial Pacific Ocean. Deep-Sea Res Part I-Oceanogr Res Pap, 35: 1451–1482

    Article  Google Scholar 

  • Wang G H, Xu J P. 2001. Diagnostic analysis on upper circulation variation in South China Sea around onset of summer monsoon in 1998 (in Chinese). J Tropical Oceanogr, 20: 36–43

    Google Scholar 

  • Wu X F, Xu J P, Zhang Q L. 2011. A preliminary study on upper ocean heat content of tropical western Pacific (in Chinese). Mar Forecasts, 28: 76–85

    Google Scholar 

  • Wyrtki K. 1981. An estimate of equatorial upwelling in the Pacific. J Phys Oceanogr, 11: 1205–1214

    Article  Google Scholar 

  • Wyrtki K, Kilonsky B. 1984. Mean water and current structure during the Hawaii to Tahiti shuttle experiment. J Phys Oceanogr, 14: 242–254

    Article  Google Scholar 

  • Wyrtki K. 1989. Some thoughts about the western Pacific warm pool. Proceedings of the Western Pacific International Meeting and Workshop on TOGA-COARE. New Caledonia: France Institute of the Scientific Research for the Development on the Cooperation. 99–109

    Google Scholar 

  • Xu J P, Liu Z H. 2007. The experiment of China ARGO Ocean Observing Array (in Chinese). Beijing: China Meteorological Press. 158

    Google Scholar 

  • Yang Y X, Huang F, Wang D X. 2007. The variation of the Indo-Pacific warm pool (in Chinese). Oceanol Limnol Sin, 38: 296–302

    Google Scholar 

  • Yu Z H, Jiang Q R. 1994. El Nino, anti-El Nino and Southern Oscillation (in Chinese). Nanjing: Nanjing University Press. 1–56

    Google Scholar 

  • Zhao Y P, Wu A M, Chen Y L. 2002. The climatic jump of the western Pacific warm pool and its climatic effects (in Chinese). J Tropical Meteorol, 18: 317–326

    Google Scholar 

  • Zhang Q L, Weng X C, Cheng M H. 1999. Relationship between precipitation during flood seasons and tropical Pacific warm pool and Kuroshio (in Chinese). Plateau Meteorol, 18: 575–583

    Google Scholar 

  • Zhang Q L, Weng X C, Hou Y J, et al. 2004. Zonal movement of surface warm water in the western Pacific warm pool (in Chinese). Acta Oceanol Sin, 26: 33–39

    Google Scholar 

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Authors and Affiliations

  1. Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China

    XiaoFen Wu & ZengHong Liu

  2. State Key Laboratory of Satellite Ocean Environment Dynamics, State Oceanic Administration, Hangzhou, 310012, China

    ZengHong Liu

  3. Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China

    QiLong Zhang

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  1. XiaoFen Wu
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  2. QiLong Zhang
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  3. ZengHong Liu
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Correspondence to XiaoFen Wu.

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Wu, X., Zhang, Q. & Liu, Z. Annual and interannual variations of the Western Pacific Warm Pool volume and sources of warm water revealed by Argo data. Sci. China Earth Sci. 57, 2269–2280 (2014). https://doi.org/10.1007/s11430-014-4893-5

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  • DOI: https://doi.org/10.1007/s11430-014-4893-5

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