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  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier,
    Keywords: Monsoons. ; Teleconnections (Climatology). ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (496 pages)
    Edition: 1st ed.
    ISBN: 9780128224328
    DDC: 551.5184
    Language: English
    Note: Front cover -- Half title -- Full title -- Copyright -- Contents -- Contributors -- Foreword -- Preface -- Chapter 1 - Drivers of the Indian summer monsoon climate variability -- 1.1 Indian Monsoon as a seasonal phenomena -- 1.2 Synoptic variability and weather systems -- 1.3 Intraseasonal variability -- 1.4 Interannual variability -- 1.5 Decadal variability and climate change -- 1.5.1 Decadal variability -- 1.5.2 Climate change -- 1.6 Summary -- Acknowledgments -- References -- Chapter 2 - Interannual variation of the Indian summer monsoon, ENSO, IOD, and EQUINOO -- 2.1 Introduction -- 2.2 Interaction of atmospheric convection with Pacific and Indian Ocean: ENSO, IOD, and EQUINOO -- 2.3 Monsoon and ENSO -- 2.4 Monsoon and EQUINOO -- 2.5 Monsoon and IOD -- 2.6 Triggering of the favorable phase of EQUINOO/IOD and sustenance of positive EQUINOO during the season -- 2.7 An experiment in prediction of the evolution of EQUINOO and its impact on the monsoon of 2019 -- 2.8 Concluding remarks -- References -- Part I - ENSO-Indian Summer Monsoon teleconnections -- Chapter 3 - ENSO-Indian summer monsoon teleconnections -- 3.1 Introduction -- 3.2 Data -- 3.3 El Niño-Southern Oscillation cycle evolution -- 3.4 ENSO-Indian summer monsoon teleconnections -- 3.4.1 Weakening of ENSO-monsoon relationship -- 3.5 ISMR variability: ENSO and non-ENSO -- 3.6 Summary -- Acknowledgments -- References -- Chapter 4 - ENSO Modoki teleconnections to Indian summer monsoon rainfall-A review -- 4.1 Introduction to ENSO Modoki -- 4.2 Data and methods -- 4.2.1 Criterion for break/active spells -- 4.3 ENSO Modoki and global impacts -- 4.3.1 Characteristics of ENSO Modoki -- 4.3.2 Distinct phenomena, or diversity of ENSOs? -- 4.3.3 Global impacts -- 4.4 Interannual variability of ENSO Modoki-ISM teleconnections. , 4.5 Intraseasonal variability of ENSO Modoki-ISM teleconnections -- References -- Chapter 5 - The decaying phase of El Niño and Indian summer monsoon rainfall -- 5.1 Introduction -- 5.2 Methods and data used -- 5.3 Indian summer monsoon rainfall during El Niño decay -- 5.3.1 Seasonal SST anomalies -- 5.3.2 Monsoonal winds and moisture transport -- 5.4 Summary and discussion -- Acknowledgments -- References -- Chapter 6 - El Niño-Indian summer monsoon relation-a nonlinear scale interactive energy exchange perspective -- 6.1 Introduction -- 6.2 Methodology and formulations -- 6.2.1 Scale selection of El Niño and data -- 6.3 Nonlinear scale interactions between El Niño and Indian summer monsoon -- 6.3.1 El Niño 1997-98 -- 6.3.2 El Niño 2015-16 -- 6.4 Conclusions and discussions -- Acknowledgments -- Appendix -- References -- Chapter 7 - Teleconnections between the Indian summer monsoon and climate variability: a proxy perspective -- 7.1 Introduction -- 7.1.1 Monsoon variability -- 7.1.2 Speleothem -- 7.1.3 Tree rings -- 7.1.4 Marine sediments -- 7.1.5 Proxy's response to forcing mechanism -- 7.1.6 Proxy studies of Indian summer monsoon: scope of the work -- 7.2 Precipitation isotopes: a proxy for large-scale moisture source signature -- 7.3 Proxy evidence of multiple-scale oscillation in Indian summer monsoon -- 7.3.1 Marine records -- 7.3.2 Speleothem records -- 7.3.3 Pacific teleconnections with Indian summer monsoon -- 7.3.4 Atlantic Teleconnections with Indian summer monsoon -- 7.4 Summary and recommendations -- Acknowledgments -- References -- Part II - Indian and Atlantic Ocean - Indian Summer Monsoon teleconnections -- Chapter 8 - Indian Ocean Dipole influence on Indian summer monsoon and ENSO: A review -- 8.1 Introduction -- 8.2 Some salient features of the Indian Ocean Dipole. , 8.3 IOD and the ENSO-monsoon teleconnections: processes at work -- 8.4 Past, present, and future IOD influence on the ENSO-monsoon teleconnection -- 8.5 Challenges and future perspectives -- 8.6 Conclusions -- Conflict of interest statement -- Acknowledgements -- References -- Chapter 9 - Influence of South Tropical Indian Ocean dynamics on the Indian summer monsoon -- 9.1 Introduction -- 9.2 Data and methods -- 9.3 Characteristics of TIO warming and its climatic influence -- 9.3.1 The Southwest Indian Ocean -- 9.3.2 Somalia-Oman upwelling -- 9.3.3 The North Indian Ocean -- 9.3.4 Impacts on Indian summer monsoon -- 9.4 Discussion and summary -- Funding -- Acknowledgements -- References -- Chapter 10 - Atlantic Niño-Indian summer monsoon teleconnections -- 10.1 Introduction -- 10.2 Methods and data -- 10.3 Atlantic Niño and ISM rainfall -- 10.4 Discussion and summary -- Acknowledgement -- References -- Chapter 11 - Teleconnections between tropical SST modes and Indian summer monsoon in observation and CMIP5 models -- 11.1 Introduction -- 11.2 Tropical ocean SST teleconnections to ISM -- 11.2.1 ISM-IOD teleconnection: Observations -- 11.2.2 ISM-IOD teleconnection: model results -- 11.2.3 ISM-ENSO teleconnection -- 11.2.4 ISM in various ENSO phases: historical period -- 11.2.5 ISM in various ENSO phases: historical vs RCP scenario -- 11.3 Mechanisms: role of natural factors -- 11.4 Discussion and summary -- Conflict of Interest -- Funding -- References -- Part III - Subtropical and Extratropical teleconnections to Indian Summer Monsoon -- Chapter 12 - Eurasian snow and the Asian summer monsoon -- 12.1 Introduction -- 12.2 Eurasian snow and the Indian monsoon -- 12.3 Eurasian snow and the East Asian monsoon -- 12.4 Summary and discussion -- Funding -- Acknowledgement -- References. , Chapter 13 - Coupling of the Indian, western North Pacific, and East Asian summer monsoons -- 13.1 Introduction -- 13.2 Data -- 13.3 The tropical pathway -- 13.3.1 The WNP summer monsoon variability -- 13.3.2 Westward influence through atmospheric Rossby waves -- 13.4 The midlatitude pathway -- 13.4.1 The silk road pattern -- 13.4.2 Interaction with the Asian summer monsoons -- 13.5 External drivers of the intermonsoon linkages -- 13.5.1 Concurrent ENSO and the Indian Ocean Dipole mode -- 13.5.2 Decaying ENSO and the IPOC mode -- 13.5.3 External drivers of the silk road pattern -- 13.6 Concluding remarks -- Funding -- References -- Chapter 14 - Teleconnection along the Asian jet stream and its association with the Asian summer monsoon -- 14.1 Introduction -- 14.2 Influences of the SRP/CGT on the ISM and EASM -- 14.3 Influences of the ISM and EASM on the SRP/CGT -- 14.4 Some remaining issues -- 14.5 Summary -- Funding -- References -- Chapter 15 - South Asian summer monsoon and subtropical deserts -- 15.1 Introduction -- 15.2 The monsoon-desert system: background settings -- 15.3 Monsoon influence over hot subtropical deserts -- 15.4 Potential role of deserts in modulating ISM -- 15.5 Summary and future perspectives -- Conflict of interest statement -- Funding -- References -- Chapter 16 - Interaction between South Asian high and Indian Summer Monsoon rainfall -- 16.1   Introduction -- 16.2   Methods and data -- 16.3   Interannual relationship between ISM rainfall and the SAH -- 16.4   Intraseasonal relationship between the ISM rainfall and the SAH zonal shift -- 16.5   Interactive processes on quasi-biweekly time scales -- 16.5.1   Effect of the SAH on the ISM rainfall -- 16.5.2   Effect of the ISM rainfall on the SAH -- 16.6   Summary and Discussion -- Acknowledgment -- References. , Chapter 17 - Southern annular mode teleconnections to Indian summer monsoon -- 17.1 Introduction -- 17.2 Data and methodology -- 17.3 Southern Annular Mode influence on Indian summer monsoon rainfall -- 17.4 Summary and discussion -- Acknowledgments -- References -- Chapter 18 - The Atlantic Multidecadal Oscillation and Indian summer monsoon variability: a revisit -- 18.1 Introduction -- 18.1.1 The Atlantic multidecadal oscillation (AMO) -- 18.2 The statistical AMO-ISM link in the past and present -- 18.3 Mechanisms of the AMO-ISM link -- 18.3.1 Meridional shifts of the ITCZ -- 18.3.2 Direct atmospheric teleconnections -- 18.3.3 Air-sea interactions and Atlantic-Pacific interbasin linkages -- 18.3.4 The role of external forcing -- 18.4 The model-simulated AMO-ISM link -- 18.5 Summary and conclusions -- Acknowledgments -- References -- Chapter 19 - Indian summer monsoon and its teleconnection with Pacific decadal variability -- 19.1 Introduction -- 19.2 Data and methods -- 19.2.1 Data -- 19.2.2 Methods -- 19.3 Pacific decadal variability and Indian summer monsoon -- 19.3.1 Pacific decadal variability -- 19.3.2 Teleconnection of ISMR with IPO -- 19.3.3 Mechanism of IPO-ISMR teleconnection -- 19.3.4 Modeling approach of IPO-ISMR teleconnection -- 19.4 Discussion and summary -- Acknowledgments -- References -- Part IV - Climate change and Monsoon teleconnections -- Chapter 20 - Future changes of the ENSO-Indian summer monsoon teleconnection -- 20.1 Introduction -- 20.2 Data and methods -- 20.2.1 Model data -- 20.2.2 Observations -- 20.2.3 The ensemble-wise method -- 20.3 Past and future changes estimated by the temporal method applied to CMIP6 models -- 20.4 The forced response estimated by the ensemble-wise method for two SMILEs -- 20.5 Summary -- Acknowledgment -- References. , Chapter 21 - Response of the positive Indian Ocean dipole to climate change and impact on Indian summer monsoon rainfall.
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  • 2
    Publication Date: 2022-05-26
    Description: Author Posting. © The Oceanography Society, 2016. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 29, no. 2 (2016): 38–49, doi:10.5670/oceanog.2016.37.
    Description: The Bay of Bengal (BoB) upper-ocean salinity is examined in the National Centers for Environmental Prediction-Climate Forecasting System version 2 (CFSv2) coupled model, Modular Ocean Model version 5 (MOM5), and Indian National Centre for Ocean Information Services Global Ocean Data Assimilation System (INC-GODAS). CFSv2 displays a large positive salinity bias with respect to World Ocean Atlas 2013 in the upper 40 m of the water column. The prescribed annual mean river discharge and excess evaporation are the main contributors to the positive bias in surface salinity. Overestimation of salinity advection also contributes to the high surface salinity in the model during summer. The surface salinity bias in MOM5 is smaller than in CFSv2 due to prescribed local freshwater flux and seasonally varying river discharge. However, the bias is higher around 70 m in summer and 40 m in fall. This bias is attributed to excessive vertical mixing in the upper ocean. Despite the fact that representation of salinity in INC-GODAS is more realistic due to data assimilation, the vertical mixing scheme still imposes systematic errors. The small-scale processes that control oceanographic turbulence are not adequately resolved in any of these models. Better parameterizations based on dedicated observational programs may help improve freshwater representation in regional and global models.
    Description: TSF acknowledges the support of CSIR, India, for the JRF/SRF Fellowship. HS is grateful for support from the ONR Young Investigator Program (N00014- 15-1-2588).
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 3
    Publication Date: 2023-07-13
    Description: India Meteorological Department (IMD) reported strong sub-seasonal rainfall variability in the Indian subcontinent during the 2021 summer monsoon season. During the month of August 2021 rainfall recorded a 19% deficit, lowest since 2002 according to IMD. The percentage departures of all India averaged rainfall from IMD (GPCP) for June, July, August and September respectively are 14(10), -5(1), -19(-20), 35(29) for year 2021. At the same time, abrupt changes in all India rainfall from the month of August to September is noticed with rainfall percentage departure changed from -19 to 35 i.e., total change of 54%. Such a huge increase of rainfall in September was not anticipated as the August rainfall was largely deficient. It is found that the tropical-midlatitude circulation interaction played an important role in altering the sub-seasonal rainfall over India in summer 2021. The Southward displacement of the Asian jet and Pacific Japan pattern caused moisture divergence over the monsoon region in August and caused deficit rainfall. On the other hand, changes in upper level mid-latitude wave propagation are associated with the Silk Road pattern responsible for high rainfall over northwest India in September 2021. Understanding the dynamics and physical mechanisms that are responsible for such unusual changes in monthly/sub-seasonal rainfall are useful for its skillful prediction. Mechanisms and dynamics underlying for deficient (positive) rainfall in August (September) 2021 is analyzed further in detail in observations and CFSv2 hindcasts.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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