The past climate of the Indian region as seen from the modelling world

Charan Teja Tejavath; Pankaj Upadhyay; Karumuri Ashok

doi:10.18520/cs/v119/i2/316-327

The past climate of the Indian region as seen from the modelling world

Charan Teja Tejavath, Pankaj Upadhyay, Karumuri Ashok

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Proxy-reconstruction studies suggest several waxing and waning epochs of the Indian summer monsoon (ISM) since Last Glacial Maximum (LGM; ≃21 kyr bp). These fluctuations in the ISM are attributed to several internal and external factors. The few available past climate modelling studies for various epochs also support the results from the reconstruction studies for India. Our results, based on an analysis of five CMIP5-PMIP3 simulations for the periods of LGM, Mid-Holocene (MH; ≃6 kyr bp), last-millennium and historical period (ce 1901–1999) indicate that the ISM rainfall was lowest during the LGM, and strongest during the MH. The simulations, relative to the historical time period, suggest highest low-level convergence over the Indian region during MH and lowest during LGM. These slow changes in large-scale circulation patterns resulted in relatively highest simulated ISM rainfall during the MH, and lowest in the LGM.

Original language	English (US)
Pages (from-to)	316-327
Number of pages	12
Journal	Current Science
Volume	119
Issue number	2
DOIs	https://doi.org/10.18520/cs/v119/i2/316-327
State	Published - Jul 25 2020
Externally published	Yes

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Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

General

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.18520/cs/v119/i2/316-327

Cite this

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title = "The past climate of the Indian region as seen from the modelling world",

abstract = "Proxy-reconstruction studies suggest several waxing and waning epochs of the Indian summer monsoon (ISM) since Last Glacial Maximum (LGM; ≃21 kyr bp). These fluctuations in the ISM are attributed to several internal and external factors. The few available past climate modelling studies for various epochs also support the results from the reconstruction studies for India. Our results, based on an analysis of five CMIP5-PMIP3 simulations for the periods of LGM, Mid-Holocene (MH; ≃6 kyr bp), last-millennium and historical period (ce 1901–1999) indicate that the ISM rainfall was lowest during the LGM, and strongest during the MH. The simulations, relative to the historical time period, suggest highest low-level convergence over the Indian region during MH and lowest during LGM. These slow changes in large-scale circulation patterns resulted in relatively highest simulated ISM rainfall during the MH, and lowest in the LGM.",

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AU - Tejavath, Charan Teja

AU - Upadhyay, Pankaj

AU - Ashok, Karumuri

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21

PY - 2020/7/25

Y1 - 2020/7/25

N2 - Proxy-reconstruction studies suggest several waxing and waning epochs of the Indian summer monsoon (ISM) since Last Glacial Maximum (LGM; ≃21 kyr bp). These fluctuations in the ISM are attributed to several internal and external factors. The few available past climate modelling studies for various epochs also support the results from the reconstruction studies for India. Our results, based on an analysis of five CMIP5-PMIP3 simulations for the periods of LGM, Mid-Holocene (MH; ≃6 kyr bp), last-millennium and historical period (ce 1901–1999) indicate that the ISM rainfall was lowest during the LGM, and strongest during the MH. The simulations, relative to the historical time period, suggest highest low-level convergence over the Indian region during MH and lowest during LGM. These slow changes in large-scale circulation patterns resulted in relatively highest simulated ISM rainfall during the MH, and lowest in the LGM.

AB - Proxy-reconstruction studies suggest several waxing and waning epochs of the Indian summer monsoon (ISM) since Last Glacial Maximum (LGM; ≃21 kyr bp). These fluctuations in the ISM are attributed to several internal and external factors. The few available past climate modelling studies for various epochs also support the results from the reconstruction studies for India. Our results, based on an analysis of five CMIP5-PMIP3 simulations for the periods of LGM, Mid-Holocene (MH; ≃6 kyr bp), last-millennium and historical period (ce 1901–1999) indicate that the ISM rainfall was lowest during the LGM, and strongest during the MH. The simulations, relative to the historical time period, suggest highest low-level convergence over the Indian region during MH and lowest during LGM. These slow changes in large-scale circulation patterns resulted in relatively highest simulated ISM rainfall during the MH, and lowest in the LGM.

UR - https://wwwops.currentscience.ac.in/Volumes/119/02/0316.pdf

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The past climate of the Indian region as seen from the modelling world

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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