Estimation of heat and salt storage variability in the Indian Ocean from TOPEX/Poseidon altimetry

被引:5
作者
Shi, W
Subrahmanyam, B
Morrison, JM
机构
[1] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA
[2] Florida State Univ, COAPS, Tallahassee, FL 32306 USA
关键词
heat storage; salt storage; altimetry; TOPEX/Poseidon; Indian Ocean; Indian Ocean dipole;
D O I
10.1029/2001JC001244
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
[1] Heat and salt storage variability in the upper 1000 m of the Indian Ocean is investigated using a combination of sea level anomalies derived from TOPEX/Poseidon altimetry (1993-2000), Reynold's sea surface temperature and monthly climatological hydrographic data (World Ocean Atlas 1998) [Antonov et al., 1998; Boyer et al., 1998]. This new technique allows extension of surface information from altimetric observations to study subsurface variability. Hydrographic data collected in the Indian Ocean during the World Ocean Circulation Experiment are used to evaluate and validate this technique. The results show that the Indian Ocean experienced larger changes in heat storage than in salt storage. Significant differences are found between the 8-year mean seasonal heat storage and the climatological seasonal heat storage, which are attributed to interannual variability, while the 8-year mean seasonal salt storage agrees well with the climatological seasonal salt storage. The variabilities of heat and salt storages are not synchronized in either space or time because of different control mechanisms. The first four empirical orthogonal function (EOF) modes explain nearly 60% of total variance of heat storage variability with the Indian Ocean dipole outweighing the other processes. The dominant first EOF mode for salt storage, which is attributed to the seasonal variability, explains 33% of its total variance. The heat (salt) storage dipole index, representing the heat (salt) storage difference between the west and east equatorial Indian Ocean during the 1994-1995 and 1997-1998 dipole periods, is of the same order as that of the seasonal heat (salt) storage variability.
引用
收藏
页数:15
相关论文
共 50 条
[41]   Coral records from the Northern Indian Ocean: Understanding the monsoon variability [J].
Chakraborty, Supriyo .
JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 2006, 68 (03) :395-405
[42]   On the statistical stability of the M2 barotropic and baroclinic tidal characteristics from along-track TOPEX/Poseidon satellite altimetry analysis -: art. no. C03033 [J].
Carrère, L ;
Le Provost, C ;
Lyard, F .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2004, 109 (C3)
[43]   Interannual variability of mixed layer depth and heat storage of upper layer in the tropical Pacific Ocean [J].
LIN Yihua YOU Xiaobao GUAN Yuping LASGInstitute of Atmospheric Physics Chinese Academy of Sciences Beijing China South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China .
ActaOceanologicaSinica, 2004, (01) :31-39
[44]   Interannual variability of mixed layer depth and heat storage of upper layer in the tropical Pacific Ocean [J].
Lin, YH ;
You, XB ;
Guan, YP .
ACTA OCEANOLOGICA SINICA, 2004, 23 (01) :31-39
[45]   Variability of sensible heat flux over the Bay of Bengal and its connection to Indian Ocean Dipole events [J].
Cyriac, Ajitha ;
Ghoshal, Tarumay ;
Shaileshbhai, Patel Ramkrushnbhai ;
Chakraborty, Arun .
OCEAN SCIENCE JOURNAL, 2016, 51 (01) :97-107
[46]   Variability of sensible heat flux over the Bay of Bengal and its connection to Indian Ocean Dipole events [J].
Ajitha Cyriac ;
Tarumay Ghoshal ;
Patel Ramkrushnbhai Shaileshbhai ;
Arun Chakraborty .
Ocean Science Journal, 2016, 51 :97-107
[47]   Estimation of sea level variability in the South China Sea from satellite altimetry and tide gauge data [J].
Fu, Yanguang ;
Zhou, Xinghua ;
Zhou, Dongxu ;
Li, Jie ;
Zhang, Wanjun .
ADVANCES IN SPACE RESEARCH, 2021, 68 (02) :523-533
[48]   Ocean-atmosphere interrelation of Bjerknes feedback loop associated with Indian Ocean Dipole retrieved from altimeter radar and microwave radiometer of satellite altimetry [J].
Abdullah, Noor Nabilah ;
Wijaya, Dudy Darmawan ;
Meilano, Irwan ;
Kuntjoro, Wedyanto ;
Tanuwijaya, Zamzam Akhmad Jamaluddin ;
Abdillah, Muhammad Rais ;
Nurzaman, Fathin .
INTERNATIONAL JOURNAL OF REMOTE SENSING, 2024, :1279-1304
[49]   Transport Variability of Very Short Lived Substances From the West Indian Ocean to the Stratosphere [J].
Fiehn, Alina ;
Quack, Birgit ;
Marandino, Christa A. ;
Kruger, Kirstin .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (10) :5720-5738
[50]   MEAN SEA LEVEL AND SEA SURFACE VARIABILITY OF NQRTHWEST PACIFIC OCEAN AND EASTERN CHINA SEAS FROM GEOSAT ALTIMETRY [J].
陈戈 ;
贺明霞 .
Chinese Journal of Oceanology and Limnology, 1994, (02) :154-164+191