热带太平洋海平面低频变化

陆青; 左军成; 吴灵君

doi:10.3969/j.issn.0253-4193.2017.07.005

热带太平洋海平面低频变化

doi: 10.3969/j.issn.0253-4193.2017.07.005

1.
国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室, 浙江杭州 310012
2.
浙江海洋大学海洋科学与技术学院, 浙江舟山 316000
3.
河海大学文天学院, 安徽马鞍山 243031

基金项目: 国家自然科学基金项目（41690120，41690121，41621064）；国家海洋局第二海洋研究所中央级公益性科研院所基本科研业务费专项资金项目（JG1510）。

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出版历程
- 收稿日期: 2016-11-27
- 修回日期: 2017-03-16

Low-frequency variation in sea level in the tropical Pacific

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316000, China
3.
Wentian College, Hohai University, Maanshan 243031, China

摘要

摘要: 本文选取ECMWF ORAS4再分析数据对1959-2015年热带太平洋海平面的低频变化进行了分析。热带太平洋海平面年际变化第一模态反映了ENSO爆发阶段的海平面变化，热带东、西太平洋变化反相，其时间序列与Niño3.4指数高度相关。海平面第二模态则体现了El Niño爆发前后热带太平洋暖水的输运过程。El Niño爆发前热带西太平洋暖水聚集的位置，以及爆发后暖水向赤道外输运的位置在两类El Niño事件中均有所不同。此外，ENSO的周期在近半个世纪发生了显著的年代际变化，这一变化与热带太平洋的年代际变化有关。热带太平洋的年代际变化对海平面趋势变化也有着显著的影响。卫星高度计观测到的近20年海平面的快速上升（下降）正是由20世纪90年代后热带太平洋频繁的位相转换引起的。
- 热带太平洋 /
- 海平面 /
- 年际变化 /
- 年代际变化 /
- 趋势变化
Abstract: The ECMWF ORAS4 reanalysis is used to study the low-frequency variation in sea level in the tropical Pacific in this paper. The first mode of interannual sea level variation in the tropical Pacific reflects the burst of El Niño. The sea level change in the tropical eastern Pacific is opposite to that in the tropical western Pacific, and the principal component of the first mode is highly correlated with the Niño3.4 index. The second mode shows the warm water transport process during the El Niño. The locations where the warm water gathered in before El Niño, and the positions where the warm water started to transport to high latitude are different in the two types of El Niño events. Besides, there is a remarkable decadal change in the cycles of ENSO, and this is linked with the decadal variation in the tropical Pacific. The sea level trends are also affected by the decadal variation. The high rise (descend) rate after 1993 that observed by altimeter is caused by the phase-switching.
- tropical Pacific /
- sea level /
- interannual variation /
- decadal change /
- trend

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参考文献(36)

Vinogradov S V, Ponte R M, Heimbach P, et al. The mean seasonal cycle in sea level estimated from a data-constrained general circulation model[J]. Journal of Geophysical Research:Oceans (1978-2012), 2008, 113(C3):203-212.

Wyrtki K. El Niño-the dynamic response of the equatorial Pacific Ocean to atmospheric forcing[J]. Journal of Physical Oceanography, 1975, 5(4):572-584.

Rebert J P, Donguy J R, Eldin G, et al. Relations between sea level, thermocline depth, heat content, and dynamic height in the tropical Pacific Ocean[J]. Journal of Geophysical Research Oceans, 1985, 90(C6):11719-11725.

Palanisamy H, Cazenave A, Delcroix T, et al. Spatial trend patterns in the Pacific Ocean sea level during the altimetry era:the contribution of thermocline depth change and internal climate variability[J]. Ocean Dynamics, 2015, 65(3):341-356.

Liu Z,Yang H. How long is the memory of tropical ocean dynamics?[J]. Journal of Climate, 2002, 15(23):3518-3522.

Rodgers K B, Friederichs P, Latif M. Tropical Pacific decadal variability and its relation to decadal modulations of ENSO[J]. Journal of Climate, 2004, 17(19):3761-3774.

Yeh S W, Kirtman B P. Tropical Pacific decadal variability and ENSO amplitude modulation in a CGCM[J]. Journal of Geophysical Research:Oceans (1978-2012), 2004, 109(C11):140-143.

Gu D, Philander S G H. Interdecadal climate fluctuations that depend on exchanges between the tropics and extratropics[J]. Science, 1997, 275(5301):805-807.

Wang Q, Huang R X. Decadal variability of pycnocline flows from the subtropical to the equatorial Pacific[J]. Journal of Physical Oceanography, 2005, 35(10):1861-1875.

Yang Haijun, Liu Zhengyu, Wang Hui. Influence of extratropical thermal and wind forcings on equatorial thermocline in an ocean GCM[J]. Journal of Physical Oceanography, 2004, 34(1):174-187.

Carton J A, Giese B S, Grodsky S A. Sea level rise and the warming of the oceans in the Simple Ocean Data Assimilation (SODA) ocean reanalysis[J]. Journal of Geophysical Research:Oceans (1978-2012), 2005, 110(C9):291-295.

Lombard A, Garric G, Penduff T. Regional patterns of observed sea level change:insights from a 1/4 global ocean/sea-ice hindcast[J]. Ocean Dynamics, 2009, 59(3):433-449.

Timmermann A, McGregor S, Jin F F. Wind effects on past and future regional Sea level trends in the Southern Indo-Pacific[J]. Journal of Climate, 2010, 23(16):4429-4437.

Qiu Bo, Chen Shuiming. Multidecadal sea level and gyre circulation variability in the northwestern tropical Pacific Ocean[J]. Journal of Physical Oceanography, 2012, 42(1):193-206.

Köhl A, Stammer D, Cornuelle B. Interannual to decadal changes in the ECCO global synthesis[J]. Journal of Physical Oceanography, 2007, 37(2):313-337.

顾小丽, 李培良. 太平洋海平面变化特征及影响因素分析[J]. 海洋学报, 2009, 31(1):28-36. Gu Xiaoli, Li Peiliang. Pacific sea level variations and its factors[J]. Haiyang Xuebao, 2009, 31(1):28-36.

Bindoff N L, Willebrand J, Artale V, et al. Observations:Oceanic Climate Change and Sea Level[M]. Cambridge:Cambridge University Press,2007:385-432.

Tapley B D, Chambers D P, Shum C K, et al. Accuracy assessment of the large-scale dynamic ocean topography from TOPEX/POSEIDON altimetry[J]. Journal of Geophysical Research Atmospheres, 1995, 99(C12):24605-24617.

Ducet N, Traon P Y L, Reverdin G. Global high-resolution mapping of ocean circulation from TOPEX/Poseidon and ERS-1 and -2[J]. Journal of Geophysical Research Oceans, 2000, 105(C8):19477-19498.

Carton J A, Giese B S, Grodsky S A. Sea level rise and the warming of the oceans in the Simple Ocean Data Assimilation (SODA) ocean reanalysis[J]. Journal of Geophysical Research Oceans, 2005, 110(C9):291-295.

Balmaseda M A, Mogensen K, Weaver A T. Evaluation of the ECMWF ocean reanalysis system ORAS4[J]. Quarterly Journal of the Royal Meteorological Society, 2013, 139(674):1132-1161.

Wang B, An S. A mechanism for decadal changes of ENSO behavior:roles of background wind changes[J]. Climate Dynamics, 2002, 18(6):475-486.

Kao H Y, Yu J Y. Contrasting eastern-Pacific and central-Pacific types of ENSO[J]. Journal of Climate, 2009, 22(3):615-632.

Ashok K, Behera S K, Rao S A, et al. El Niño Modoki and its possible teleconnection[J]. Journal of Geophysical Research, 2007, 112(C11):C11007.

Singh A, Delcroix T. Eastern and Central Pacific ENSO and their relationships to the recharge/discharge oscillator paradigm[J]. Deep-Sea Research Part I:Oceanographic Research Papers, 2013, 82(4):32-43.

Jin F F. An Equatorial ocean recharge paradigm for ENSO. Part I:Conceptual model[J]. Journal of the Atmospheric Sciences, 1997, 54(7):811-829.

Jin F F. An Equatorial ocean recharge paradigm for ENSO. Part Ⅱ:A stripped-down coupled model[J]. Journal of the Atmospheric Sciences, 1997, 54(7):830-847.

Ren H L, Jin F F. Recharge Oscillator mechanisms in two types of ENSO[J]. Journal of Climate, 2013, 26(17):6506-6523.

Lu Qing, Ruan Zhenxin, Wang Dongping, et al. Zonal transport from the western boundary and its role in warm water volume changes during ENSO[J]. Journal of Physical Oceanography, 2017,47(1):211-225.

冯琳. 热带太平洋年代际变化及其形成机制探讨[D]. 青岛:中国海洋大学, 2008. Feng Lin.Study on the long-term variability of the tropical Pacific Ocean and its mechanism. Qingdao:Ocean Uinversity of China, 2008.

Trenberth K E, Fasullo J T. An apparent hiatus in global warming?[J]. Earths Future, 2013, 1(1):19-32.

Farneti R, Molteni F, Kucharski F. Pacific interdecadal variability driven by tropical-extratropical interactions[J]. Climate Dynamics, 2014, 42(11/12):3337-3355.

Vivier F, Kelly K A, Thompson L A. Contributions of wind forcing, waves, and surface heating to sea surface height observations in the Pacific Ocean[J]. Journal of Geophysical Research Atmospheres, 1999, 104(C9):20767-20788.

Köhl A, Stammer D. Decadal sea level changes in the 50-year GECCO ocean synthesis[J]. Journal of Physical Oceanography, 2008, 21(9):1876-1890.

Timmermann A, Mcgregor S, Jin F F. Wind effects on past and future regional sea level trends in the Southern Indo-Pacific[J]. Journal of Climate, 2010, 23(16):4429-4437.

Merrifield M A, Maltrud M E. Regional sea level trends due to a Pacific trade wind intensification[J]. Geophysical Research Letters, 2011, 38(21):759-775.

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