Search

Your search keyword '"McCreary, Julian P."' showing total 223 results
Start Over Author "McCreary, Julian P."
223 results on '"McCreary, Julian P."'

2. Overview

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

5. Coastal Ocean

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

8. Equatorial Waves

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

9. Interior Ocean

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

10. Midlatitude Waves

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

13. Ocean Circulations

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

15. Ocean Models

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

16. Introduction

Author

McCreary, Julian P., Shetye, Satish R., Ip, Wing-Huen, Editor-in-Chief, McCreary, Julian P., and Shetye, Satish R.

Published
2023
Full Text
View/download PDF

35. Coupling between northward-propagating, intraseasonal oscillations and sea surface temperature in the Indian Ocean

Author

Fu, Xiouhua, Wang, Bin, Li, Tim, and McCreary, Julian P.

Subjects
Indian Ocean -- Observations, Dynamic meteorology -- Models, Ocean temperature -- Models, Earth sciences, Science and technology
Abstract

Using a hybrid atmosphere--ocean coupled model, it is shown that during the boreal summer northward-propagating, intraseasonal oscillations (NPISOs) are strongly coupled to the underlying sea surface temperature (SST) in the Indian Ocean sector. On the one hand, the intraseasonal atmospheric convection changes the SST through solar radiation, latent heat flux, and mixed-layer entrainment; on the other, the induced SST fluctuations feed back to affect the intraseasonal convection. The preferential northward, rather than southward, propagation of boreal summer ISOs in the Indian Ocean is partially explained by an interaction among the summer-mean climate state, the atmospheric disturbances, and the ocean surface temperature. A solution to an atmosphere-only model forced with daily SST produces much stronger NPISOs than a similar solution forced with monthly mean SST (AMIP-type run). The atmosphere-only model, however, even when it is forced by daily SST from the coupled model (with a small amount of noise in the initial and/or boundary conditions), is unable to reproduce the NPISOs in the coupled case. In the coupled system, intraseasonal SST anomalies are forced by intraseasonal atmospheric convection, and hence are in quadrature with the convection. In the stand-alone atmospheric model, however, SST acts only as a boundary forcing, and the resultant atmospheric convection has almost the same phase with the underlying SST One consequence is that the intensity of the SST-forced intraseasonal convection in the stand-alone atmospheric model is considerably weaker than in the coupled model. Finally, solutions indicate that the northward movement of the off-equatorial convection in the northern Indian Ocean is more closely related to local intraseasonal SST anomalies than to the equatorial eastward-moving Madden-Julian oscillation: Positive (negative) SST anomalies in the northern Indian Ocean lead the active (break) phases of the intraseasonal convection by about 2 pentads (10 days). Therefore, intraseasonal SST anomalies in the northern Indian Ocean are potentially a useful index to forecast active (break) spells of the south Asian summer monsoon.

Published
2003

40. Corrigendum

Author

Furue, Ryo, primary, Guerreiro, Kévin, additional, Phillips, Helen E., additional, McCreary, Julian P., additional, and Bindoff, Nathaniel L., additional

Published
2018
Full Text
View/download PDF

43. Dominant role of winds near Sri Lanka in driving seasonal sea level variations along the west coast of India

Author

Suresh, Iyyappan, Vialard, Jérôme, Izumo, Takeshi, Lengaigne, Matthieu, Han, W., Mccreary, Julian P., Muraleedharan, Pillathu Moolayil, National Institute of Oceanography (NIO), Council of Scientific and Industrial Research [India] (CSIR), Processus de la variabilité climatique tropicale et impacts (PARVATI), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Indo-French Cell for Water Sciences (IFCWS), Indian Institute of Science [Bangalore] (IISc Bangalore), Department of Atmospheric and Oceanic Sciences [Boulder] (ATOC), University of Colorado [Boulder], International Pacific Research Center (IPRC), School of Ocean and Earth Science and Technology (SOEST), University of Hawai‘i [Mānoa] (UHM)-University of Hawai‘i [Mānoa] (UHM), CNES, Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636))

Subjects
coastal waveguide, [SDU]Sciences of the Universe [physics], seasonal cycle, local and remote forcing, North Indian Ocean, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], sea level, west coast of India, ComputingMilieux_MISCELLANEOUS
Abstract

The strong seasonal cycle of sea level along the west coast of India (WCI) has important consequences for ecosystem and fisheries, and the Lakshadweep high/low in the southeast Arabian Sea is important for fisheries and the Indian summer monsoon. Previous studies suggested that WCI sea level variability is primarily driven by remote wind forcing from the Bay of Bengal and equatorial Indian Ocean through coastal Kelvin wave propagation. Using a linear ocean model, we demonstrate that wind forcing in a relatively small region around the southern tip of India and east of Sri Lanka contribute to similar to 60% of this variability. Wind variations from the rest of the Bay and the equator only account respectively for similar to 20% and similar to 10%. Sea level signals forced by the southern tip winds extend westward into the eastern Arabian Sea through Rossby wave propagation, with more than 50% contribution in the Lakshadweep high/low region.

Published
2016

46. Heat content of the Arabian Sea Mini Warm Pool is increasing

Author

Nagamani, P. V., Ali, M. M., Goni, Gustavo J., Udaya Bhaskar, T. V. S., McCreary, Julian P., Weller, Robert A., Rajeevan, Madhavan Nair, Gopalakrishna, V. V., Pezzullo, John C., Nagamani, P. V., Ali, M. M., Goni, Gustavo J., Udaya Bhaskar, T. V. S., McCreary, Julian P., Weller, Robert A., Rajeevan, Madhavan Nair, Gopalakrishna, V. V., and Pezzullo, John C.

Abstract

© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Atmospheric Science Letters 17 (2016): 39-42, doi:10.1002/asl.596., Sea surface temperature in the Arabian Sea Mini Warm Pool has been suggested to be one of the factors that affects the Indian summer monsoon. In this paper, we analyze the annual ocean heat content (OHC) of this region during 1993–2010, using in situ data, satellite observations, and a model simulation. We find that OHC increases significantly in the region during this period relative to the north Indian Ocean, and propose that this increase could have caused the decrease in Indian Summer Monsoon Rainfall that occurred at the same time.

Published
2016

48. The deep equatorial ocean circulation in wind-forced numerical solutions

Author

Ascani, François, Firing, Eric, McCreary, Julian P., Brandt, Peter, Greatbatch, Richard John, Ascani, François, Firing, Eric, McCreary, Julian P., Brandt, Peter, and Greatbatch, Richard John

Abstract

We perform eddy-resolving and high-vertical-resolution numerical simulations of the circulation in an idealized equatorial Atlantic Ocean in order to explore the formation of the deep equatorial circulation (DEC) in this basin. Unlike in previous studies, the deep equatorial intraseasonal variability (DEIV) that is believed to be the source of the DEC is generated internally by instabilities of the upper ocean currents. Two main simulations are discussed: Solution 1, configured with a rectangular basin and with wind forcing that is zonally and temporally uniform; and Solution 2, with realistic coastlines and with an annual cycle of wind forcing varying zonally. Somewhat surprisingly, Solution 1 produces the more realistic DEC: The large-vertical-scale currents (Equatorial Intermediate Currents or EICs) are found over a large zonal portion of the basin, and the small-vertical-scale equatorial currents (Equatorial Deep Jets or EDJs) form low-frequency, quasi-resonant, baroclinic equatorial basin modes with phase propagating mostly downward, consistent with observations. We demonstrate that both types of currents arise from the rectification of DEIV, consistent with previous theories. We also find that the EDJs contribute to maintaining the EICs, suggesting that the nonlinear energy transfer is more complex than previously thought. In Solution 2, the DEC is unrealistically weak and less spatially coherent than in the first simulation probably because of its weaker DEIV. Using intermediate solutions, we find that the main reason for this weaker DEIV is the use of realistic coastlines in Solution 2. It remains to be determined, what needs to be modified or included to obtain a realistic DEC in the more realistic configuration.

Published
2015
Full Text
View/download PDF

49. Origins of wind-driven intraseasonal sea level variations in the North Indian Ocean coastal waveguide

Author

Suresh, Iyyappan, Vialard, Jérôme, Lengaigne, Matthieu, Han, W., Mccreary, Julian P., Durand, Fabien, Muraleedharan, Pillathu Moolayil, National Institute of Oceanography (NIO), Council of Scientific and Industrial Research [India] (CSIR), Processus de la variabilité climatique tropicale et impacts (PARVATI), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Atmospheric and Oceanic Sciences [Boulder] (ATOC), University of Colorado [Boulder], International Pacific Research Center (IPRC), School of Ocean and Earth Science and Technology (SOEST), University of Hawai‘i [Mānoa] (UHM)-University of Hawai‘i [Mānoa] (UHM), Océan du Large et Variabilité Climatique (OLVAC), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), INCOIS/MoES under the INDOMOD program, Council of Scientific and Industrial Research, New Delhi, India, NOAA NA11OAR4310100, CNES AltiKa project, Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
DYNAMICS, CURRENTS, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, VARIABILITY, coastal waveguide, BAY, equatorial waveguide, northern Indian Ocean, local and remote forcing, BENGAL, intraseasonal sea level variability, waveguide, equatorial
Abstract

ISI Document Delivery No.: 263LT Times Cited: 0 Cited Reference Count: 19 Cited References: Amol P, 2012, J GEOPHYS RES-OCEANS, V117, DOI 10.1029/2011JC007606 Cheng XH, 2013, J GEOPHYS RES-OCEANS, V118, P816, DOI 10.1002/jgrc.20075 Durand F, 2009, J GEOPHYS RES-OCEANS, V114, DOI 10.1029/2008JC004807 Girishkumar MS, 2013, J GEOPHYS RES-OCEANS, V118, P3336, DOI 10.1002/jgrc.20245 Goswami BN, 2005, S-P B ENVIRON SCI, P19, DOI 10.1007/3-540-27250-X_2 Han WQ, 2002, J PHYS OCEANOGR, V32, P216, DOI 10.1175/1520-0485(2002)0322.0.CO;2 Han WQ, 2005, J PHYS OCEANOGR, V35, P708, DOI 10.1175/JPO2725.1 Iskandar I, 2011, J GEOPHYS RES-OCEANS, V116, DOI 10.1029/2010JC006864 Masumoto Y, 2005, GEOPHYS RES LETT, V32, DOI 10.1029/2004GL021896 McCreary JP, 1996, J GEOPHYS RES-OCEANS, V101, P13993, DOI 10.1029/96JC00560 MCCREARY JP, 1993, PROG OCEANOGR, V31, P181, DOI 10.1016/0079-6611(93)90002-U Nagura M, 2012, J GEOPHYS RES-OCEANS, V117, DOI 10.1029/2011JC007405 Nethery D, 2007, J EARTH SYST SCI, V116, P331, DOI 10.1007/s12040-007-0030-6 Nidheesh AG, 2013, CLIM DYNAM, V41, P381, DOI 10.1007/s00382-012-1463-4 Sengupta D, 2007, J CLIMATE, V20, P3036, DOI 10.1175/JCLI4166.1 Shankar D, 1996, J GEOPHYS RES-OCEANS, V101, P13975 Shetye SR, 2008, J GEOPHYS RES-OCEANS, V113, DOI 10.1029/2008JC004874 Vialard J, 2009, GEOPHYS RES LETT, V36, DOI 10.1029/2009GL038450 Zhang CD, 2005, REV GEOPHYS, V43, DOI 10.1029/2004RG000158 Suresh, I. Vialard, J. Lengaigne, M. Han, W. McCreary, J. Durand, F. Muraleedharan, P. M. Vialard, Jerome/C-2809-2008 Vialard, Jerome/0000-0001-6876-3766 INCOIS/MoES under the INDOMOD program; Council of Scientific and Industrial Research, New Delhi, India; Institut de Recherche pour le Developpement (IRD); NOAA [NA11OAR4310100]; CNES AltiKa project I.S. thanks S. Neetu, S.W.A. Naqvi, and T. Pankajakshan for their encouragement and acknowledges financial support from INCOIS/MoES under the INDOMOD program and of Council of Scientific and Industrial Research, New Delhi, India. J.V., M.L., and F.D. are funded by Institut de Recherche pour le Developpement (IRD). W.H. is supported by NOAA NA11OAR4310100. This research has been funded by the CNES AltiKa project. This work was initiated while J.V. and M.L. were visiting scientists at CSIR-National Institute of Oceanography. The authors thank M. J. McPhaden and D. Moore for their useful comments on this paper. This is NIO contribution number 5499. 0 AMER GEOPHYSICAL UNION WASHINGTON GEOPHYS RES LETT; In this paper, we show that a linear, continuously stratified ocean model reproduces observed wind-driven intraseasonal sea level variability in the coastal waveguide of the Northern Indian Ocean (NIO). Sensitivity experiments with intraseasonal wind forcing selectively applied in the equatorial region, Bay of Bengal, and Arabian Sea show that a large part of the basin-scale sea level variations are driven by zonal wind fluctuations along the equator. Within the NIO coastal waveguide, the contribution of remote equatorial forcing decreases from similar to 80-90% in the Andaman Sea to similar to 50% northeast of Sri Lanka and then increases to similar to 60-70% along the west coast of India. During the southwest monsoon, intraseasonal wind variations become stronger over the NIO, resulting in a larger contribution of local wind forcing to sea level variability along the west (up to 60%) and east (up to 40%) coasts of India.

Published
2013

Catalog

Books, media, physical & digital resources
See catalog results