Influence of the Atlantic zonal mode on monsoon depressions in the Bay of Bengal during boreal summer
作者： Vijay Pottapinjara , M. S. Girishkumar , M. Ravichandran , R. Murtugudde
DOI: 10.1002/2014JD021494
关键词:
摘要: The influence of the Atlantic Zonal Mode (AZM) or NiA±o on monsoon depressions in Bay Bengal during boreal summer (June-August) is studied. Our analysis shows that there a statistically significant difference number between warm and cold phases AZM; more (fewer) form (warm) phase AZM. It also are differences spatial pattern trajectories depressions; AZM, tracks relatively long seem to cluster along axis core region compared indicates an increase (a reduction) low-level cyclonic vorticity midtropospheric humidity but reduction (an increase) vertical wind shear due anomalous circulation pattern. All these changes favorable for enhancement (suppression) further teleconnection pathway by which AZM can remote Indian Ocean. This could have implications enhancing prediction skill, especially non-El NiA±o-Southern Oscillation years. Key Points Influence Cold increases (decreases) large-scale atmospheric conditions BoB
harvard.edu
sci-hub.se 参考文章(78)
Pierre Florenchie, Johann R. E. Lutjeharms, C. J. C. Reason, S. Masson, M. Rouault, The source of Benguela Niños in the South Atlantic Ocean Geophysical Research Letters. ,vol. 30, pp. 1505- ,(2003) , 10.1029/2003GL017172
C.J.C. Reason, P. Florenchie, M. Rouault, J. Veitch, 10 Influences of large scale climate modes and agulhas system variability on the BCLME region Benguela - Predicting a Large Marine Ecosystem. ,vol. 14, pp. 223- 238 ,(2006) , 10.1016/S1570-0461(06)80015-7
F. Kucharski, I.-S. Kang, R. Farneti, L. Feudale, Tropical Pacific response to 20th century Atlantic warming Geophysical Research Letters. ,vol. 38, ,(2011) , 10.1029/2010GL046248
K. Lutz, J. Rathmann, J. Jacobeit, Classification of warm and cold water events in the eastern tropical Atlantic Ocean Atmospheric Science Letters. ,vol. 14, pp. 102- 106 ,(2013) , 10.1002/ASL2.424
Shang-Ping Xie, James A. Carton, Tropical Atlantic Variability: Patterns, Mechanisms, and Impacts Geophysical monograph. ,vol. 147, pp. 121- 142 ,(2013) , 10.1029/147GM07
Gregory R. Foltz, Michael J. McPhaden, Interaction between the Atlantic meridional and Niño modes Geophysical Research Letters. ,vol. 37, ,(2010) , 10.1029/2010GL044001
T. Losada, B. Rodríguez-Fonseca, I. Polo, S. Janicot, S. Gervois, F. Chauvin, P. Ruti, Tropical response to the Atlantic Equatorial mode: AGCM multimodel approach Climate Dynamics. ,vol. 35, pp. 45- 52 ,(2010) , 10.1007/S00382-009-0624-6
V. Krishnamurthy, R. S. Ajayamohan, Composite Structure of Monsoon Low Pressure Systems and Its Relation to Indian Rainfall Journal of Climate. ,vol. 23, pp. 4285- 4305 ,(2010) , 10.1175/2010JCLI2953.1
Peter J. Webster, Andrew M. Moore, Johannes P. Loschnigg, Robert R. Leben, Coupled ocean–atmosphere dynamics in the Indian Ocean during 1997–98 Nature. ,vol. 401, pp. 356- 360 ,(1999) , 10.1038/43848
Masao Kanamitsu, Wesley Ebisuzaki, Jack Woollen, Shi-Keng Yang, J. J. Hnilo, M. Fiorino, G. L. Potter, NCEP–DOE AMIP-II Reanalysis (R-2) Bulletin of the American Meteorological Society. ,vol. 83, pp. 1631- 1643 ,(2002) , 10.1175/BAMS-83-11-1631