Chetankumar Jalihal

Chetankumar Jalihal
Max Planck Institute for Meteorology | MPIMET · Department of The Ocean in the Earth System

Doctor of Philosophy

About

15
Publications
2,580
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56
Citations
Introduction
I am a postdoctoral scientist at the Max Planck Institute for Meteorology. My research is concerned with the centennial-to-millennial scale oscillations in climate during the ice age. In my Ph.D. I studied the energetics of the Indian monsoon variability since the peak of ice age 22,000 years ago, under the supervision of Prof. J. Srinivasan and Prof. Arindam Chakraborty.
Additional affiliations
December 2020 - present
Max Planck Institute for Meteorology
Position
  • PostDoc Position
August 2020 - November 2020
Max Planck Institute for Meteorology
Position
  • Intern
Education
August 2015 - November 2020
Indian Institute of Science
Field of study
  • Climate Science
August 2013 - July 2015
Indian Institute of Science
Field of study
  • Climate Science
August 2009 - July 2013
Goa Engineering College
Field of study
  • Electronics and Telecommunication

Publications

Publications (15)
Article
Full-text available
Plain Language Summary Modern observations suggest that the upwelling along the western boundary of the Arabian Sea is primarily controlled by the strength of the low‐level jet (LLJ). The strength of the LLJ and the Indian summer monsoon rainfall are also positively correlated. Hence, proxies of upwelling have been used to infer the variations in t...
Conference Paper
Full-text available
Modern observations suggest a positive correlation between Indian summer monsoon rainfall and coastal upwelling along the western boundary of the Arabian Sea. It was assumed that this relation is valid in climates of the past and has been the basis of several monsoon reconstructions. Such reconstructions indicate that monsoon increases when local s...
Article
Full-text available
Previous studies based on multiple paleoclimate archives suggested a prominent intensification of the South Asian Monsoon (SAM) during the mid-Holocene (MH, ∼6000 years before present). The main forcing that contributed to this intensification is related to changes in the Earth's orbital parameters. Nonetheless, other key factors likely played impo...
Conference Paper
Full-text available
Monsoons were traditionally considered to be land-based systems. Recent definitions of monsoons based on either the seasonal reversal of winds or the local summer precipitation accounting for more than 50% of the annual precipitation suggests that monsoon domains extend over oceanic regions as well. The concept of global monsoon combines all the mo...
Conference Paper
Full-text available
Proxies of monsoons indicate a nearly synchronous fluctuation across northern monsoon domains on orbital timescales. Using a transient climate simulation, we have shown that precipitation evolves differently over tropical land and ocean. During the deglacial (22 ka to 11 ka) precipitation over land and ocean are in phase, whereas they are out of ph...
Preprint
Full-text available
Previous studies based on multiple paleoclimate archives suggested a prominent intensification of the South Asian Monsoon (SAM) during the mid-Holocene (MH, ~ 6000 years before present day). The main forcing that contributed to this intensification is related to changes in the Earth’s orbital parameters. However, other key factors likely played imp...
Article
Full-text available
Various proxies suggest a nearly in-phase variation of monsoons with local summer insolation. Oceanic proxies of monsoons document a more complex response. Climate model simulations also indicate that the response is different over land and ocean. Here using a transient simulation by a climate model over the last 22,000 years we have unraveled the...
Conference Paper
Full-text available
In the paleo literature, the emphasis has been on the role of insolation in driving monsoons on orbital timescales, but not on the role of feedbacks internal to the climate system. Here, using the energetics framework, we have underscored the effect of water vapor on the Indian summer monsoon over the last 22,000 years in transient climate simulati...
Article
Full-text available
To predict how monsoons will evolve in the 21st century, we need to understand how they have changed in the past. In paleoclimate literature, the major focus has been on the role of solar forcing on monsoons but not on the amplification by feedbacks internal to the climate system. Here we have used the results from a transient climate simulation to...
Presentation
Full-text available
Substantial evidence from proxies suggests that monsoon variations in the past are due to insolation. Our model-based study indicates, however, that surface energy fluxes and the vertical stability of the atmosphere can be dominant. We have used a simple diagnostic based on the energetics of monsoon, to understand the precipitation response to prec...
Article
Full-text available
The changes in Earth's precession have an impact on the tropical precipitation. This has been attributed to the changes in seasonal solar radiation at the top of the atmosphere. The primary mechanism that has been proposed is the change in thermal gradient between the two hemispheres. This may be adequate to understand the zonal mean changes, but c...
Article
Full-text available
The changes in Earth's precession have an impact on tropical precipitation. These changes have been ascribed to the changes in solar radiation at the top of the atmosphere, but this cannot explain the variations in precipitation over oceans. Using energy and moisture budget equations we have shown that the surface energy fluxes, as well as vertical...
Poster
The changes in Earth’s precession have an impact on tropical precipitation. Speleothem records show that, the intensity of monsoon is directly proportional to insolation on orbtial timescales. However, model based studies suggest that, while this is true over land, precipitation over tropical oceans are in general, inversely related to insolation....
Poster
Volcanoes were one of the major forcing agents during the last millennium. We have used the CMIP5 MPI-ESM’s past1000 experiment to examine the variability of Indian monsoon. Global annual mean precipitation reduces after a major volcanic eruption. The Indonesian monsoon was most affected during those years. The Indian Monsoon does not show any sign...

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