收稿日期: 2009-04-06
修回日期: 2009-08-05
网络出版日期: 2010-02-05
基金资助
中国科学知识创新工程重要方向项目(印度洋-南海-西太平洋物理海洋学研究);国家重点基础研究规划项目(2007CB411800);国家自然科学基金面上项目(40775054)
Geostrophic transport of the Indonesian Throughflow estimated by using the Argo data
Received date: 2009-04-06
Revised date: 2009-08-05
Online published: 2010-02-05
Supported by
中国科学知识创新工程重要方向项目(印度洋-南海-西太平洋物理海洋学研究);国家重点基础研究规划项目(2007CB411800);国家自然科学基金面上项目(40775054)
利用Argo浮标资料，估计了2003—2007年期间印度尼西亚贯穿流（ITF）出口处114.5οE断面上层(0—1000m)的地转流，并与WOA05资料进行对比。在114.5οE断面上9.5ο—18.5οS之间，依据Argo资料计算的上层(0—1000m)地转流年平均输送为4.2Sv(1 Sv = 106m3.s-1)，比依据WOA05资料计算的流量大0.5Sv左右，与前人对IX1断面的估算接近。依据Argo资料计算的ITF的季节变化也与WOA05比较一致，最大输送都出现在7月份，可以达到10Sv，而冬季二者差异较大。比较了盐度资料的差异以及114.5οE断面南侧缺测对估计ITF地转流输送的影响，发现盐度资料的改善可以改进对ITF地转输送量的估计，而断面南侧的缺测对ITF年平均输送的影响较小。因此，Argo资料可以作为监测ITF输送量的一种有效手段，特别是用于年平均流量的研究。
刘祥翠 , 刘海龙 , 李薇 , 林鹏飞 . 用Argo温盐资料估计印度尼西亚贯穿流多年平均地转输送[J]. 热带海洋学报, 2009 , 28(5) : 75 -82 . DOI: 10.11978/j.issn.1009-5470.2009.05.075
The authors estimate the geostrophic velocities and transports between 0 and 1000 m along 114.5 ΟE section, which is located at the exit of the Indonesian Throughflow (ITF), by using the Argo data over 2003-2007. The annual-mean transport based on Argo is 4.2 Sv (1 Sv = 106m3.s-1) between 9.5 Ο-18.5 ΟS, which is 0.5 Sv larger than that based on WOA05 but close to previous estimations along the IX1 section. The seasonal variation of the ITF transport estimated by using the Argo data agrees well with that by WOA05, with the maximum transport of about 10 Sv in July; however, there is a large discrepancy between the two data sets in winter when the transport is small. The authors also investigate the effects of salinity difference and lack of observation to the south of 114.5 ΟE section on the estimation of the ITF transport. They find that better salinity observation can improve the estimation, while the lack of observation to the south of 114.5 ΟE section has little impact on the annual-mean ITF transport. Therefore, Argo data can be used as a valid measurement for estimating the ITF transport, especially its annual-mean amount.
Key words： Argo float; Indonesian Throughflow; geostrophic transport
[1] GODFREY J S. The effect of the Indonesian throughflow on ocean circulation and heat exchange with the atmosphere: A review[J]. J Geophys Res, 1996,101：12 217—12 237.
[2] WIJFFELS S E，MEYERS G，STUART G J. A 20-Yr average of the Indonesian Throughflow: Regional currents and the Interbasin exchange[J]. J Phys Oceanogr, 2008，38(9): 1965—1978.
[3] HIRST A C, GODFREY J S. The role of the Indonesian Throughflow in a global GCM[J]. J Phys Oceanogr, 1993, 23：1057—1086.
[4] LEE T，FUKUMORI I，MENEMENLIS D，et al. Effects of the Indonesian throughflow on the Pacific and Indian Oceans[J]. J Phys Oceanogr，2002，32(5)：1404—1429.
[5] SCHNEIDER N，BARNETT T. Indonesian throughflow in a coupled general circulation model[J]. J Geophys Res，1997，102：12341—12358.
[6] SCHNEIDER N. The Indonesian Throughflow and the global climate system[J]. J Climate, 1998，11: 676—689.
[7] WAJSOWICZ R C, SCHNEIDER E K. The Indonesian Throughflow’s effect on global climate determined from the COLA coupled climate system[J]. J Climate, 2001，14： 3029—3042.
[8] QIU B, MAO M, KASHINO Y. Intraseasonal Variability in the Indo-Pacific Throughflow and the Regions Surrounding the Indonesian Seas[J]. Journal of Physical Oceanography, 1999, 29: 1599—1618.
[9] MEYERS G，BAILEY R J，WORBY A P. Geostrophic transport of Indonesian throughflow[J]. Deep-Sea Res, Part I, 1995, 42: 1163—1174.
[10] MEYERS G. Variation of Indonesian throughflow and the El Nino-Southern Oscillation[J]. J Geophys Res, 1996,101：12255—12263.
[11] GORDON A L，SUSANTO R D. Banda Sea surface-layer divergence[J]. Ocean Dynamics, 2001,51：2—10.
[12] GORDON A L，SUSANTO R D，FIELD A. Throughflow within Makassar Strait[J]. Geophysical Research Letters, 1999, 26（21）：3325—3328.
[13] SPRINTALL J, WIJFFELS S, GORDON A L, et al. INSTANT: A new international array to measure the Indonesian throughflow[J]. Eos Trans AGU, 2004，85(39): 369—376.
[14] LIU H L，LI W，ZHANG X H. Climatology and Variability of the Indonesian Throughflow in an Eddy-permitting Oceanic GCM[J]. Adv Atmos Sci, 2005，22：496—508.
[15] SONG Q, VECCHI G A, ROSATI A J. The Role of the Indonesian Throughflow in the Indo–Pacific Climate Variability in the GFDL Coupled Climate Model[J]. Journal of Climate, 2007,20: 2434—2451.
[16] SPRINTALL J, WIJFFELS S, CHERESKIN T, et al. The JADE and WOCE I10/IR6 Throughflow sections in the Southeast Indian Ocean. Part 2: Velocity and transports[J]. Deep-Sea Res, Part II, 2002，49: 1363—1389.
[17] LIU Y, MING FENG, JOHN CHURCH, et al. Effect of salinity on estimating geostrophic transport of the Indonesian Throughflow along the IX1 XBT section[J]. J Oceanography, 2005，61：795—801.
[18] CRESSMAN G P. An operational objective analysis system[J]. Mon Wea Rev，1959，87：367—374.
[19] LOCARNINI R A, MISHONOV A V, ANTONOV J I, et al. World Ocean Atlas 2005, Volume 1: Temperature [C] // Levitus S. NOAA Atlas NESDIS 61, U.S. Government Printing Office, Washington, D.C., 2006: 182.
[20] ANTONOV J I, LOCARNINI R A, BOYER T P, et al. World Ocean Atlas 2005, Volume 2: Salinity[C] // Levitus S. NOAA Atlas NESDIS 62, U.S. Government Printing Office, Washington, D.C., 2006: 182.
/
| 〈 |
|
〉 |
