Department of Meteorology · University of Reading
Postdoctoral Research Scientist in Climate Dynamics
I study how the ocean and atmosphere interact to shape climate variability, from year-to-year swings to changes over decades, using observations, climate models and numerical experiments.
About
I am a climate dynamics researcher at the Department of Meteorology, University of Reading. I work on ocean–atmosphere coupling; variability on interannual, decadal and multidecadal timescales; oceanic mixed-layer processes; and Southern Hemisphere climate dynamics.
My current work looks at what drives tropical Atlantic multidecadal variability and how it links to the extratropical Atlantic. I also study the atmospheric impacts of AMOC variability as part of the EPOC project, and contribute UKESM ocean experiments to TIPMIP for CMIP6+/CMIP7. During my PhD at IIT Kharagpur I identified a new coupled circumpolar wavenumber-4 pattern in the Southern Hemisphere ocean and atmosphere.
Research
I showed that mixed-layer depth and ocean–atmosphere interaction play a pivotal role in tropical Atlantic multidecadal variability. My recent work describes it as a seasonally evolving coupled phenomenon: it grows each summer and decays each winter, and this cycle repeats over decades. It is not simply a warming or cooling of the annual mean.
A circumpolar pattern of eight loading centers, four positive and four negative, alternating with each other in the Southern Hemisphere. It is found in both subtropical and mid-latitude sea surface temperature and the atmosphere. I studied how it forms, its life cycle, its decadal variability and its effect on rainfall, using observations and SINTEX-F2 coupled-model experiments.
I study the atmospheric impacts of AMOC variability and how AMOC-related climate responses change with model resolution (EPOC project). I also run UKESM ocean experiments for TIPMIP, for future CMIP6+/CMIP7 applications.
I also work with collaborators and PhD students on Indian Ocean climate: a horseshoe-shaped salinity pattern, meridional dipole modes in ocean heat content, and how a weaker Hadley circulation delays the onset of the Indian summer monsoon.
Publications
Nature Communications Under review
Journal of Climate · doi:10.1175/JCLI-D-25-0730.1
Geophysical Research Letters · doi:10.1029/2025GL120701
Geophysical Research Letters, 51(15), e2024GL110057 · doi:10.1029/2024GL110057 Media coverage
Journal of Geophysical Research: Oceans, 129(7), e2023JC020801 · doi:10.1029/2023JC020801 #1 JGR-Oceans · Altmetric 665
Dynamics of Atmospheres and Oceans · doi:10.1016/j.dynatmoce.2023.101412
Geophysical Research Letters, e2022GL099046 · doi:10.1029/2022GL099046
Climate Dynamics · doi:10.1007/s00382-021-06040-z
Journal of the Indian Society of Remote Sensing · doi:10.1007/s12524-022-01561-4
Polar Geography · doi:10.1080/1088937X.2022.2105969
ACS Environmental Au · doi:10.1021/acsenvironau.2c00042
Scientific Reports · doi:10.1038/s41598-020-80492-x
Full and up-to-date list on Google Scholar and ORCID.
Experience
Department of Meteorology, University of Reading, UK
I lead research on the mechanisms of tropical Atlantic multidecadal variability and on the atmospheric impacts of AMOC variability (EPOC), and I contribute to TIPMIP ocean experiments with UKESM.
Application Laboratory, JAMSTEC, Japan
A six-month research visit funded by the British Antarctic Survey's Antarctic Science Bursary. I ran coupled-model sensitivity experiments with SINTEX-F2.
Education
Indian Institute of Technology Kharagpur, India
Thesis: Circumpolar Wavenumber-4 Pattern in the Southern Hemisphere
Berhampur University, India
First Rank with Gold Medal
Talcher Autonomous College, Utkal University, India
Distinction, first-class first position
Talks
Teaching
University of Reading · Spring 2024
Taught global circulation dynamics to MSc students and guided their practical work.
University of Reading · Autumn 2023
Led problem-solving sessions for MSc students.
University of Reading · Autumn 2023 & Autumn 2024
Ran laboratory sessions and marked lab work for postgraduate students.
University of Reading · Autumn 2023
Instructed meteorological observation and analysis in the field.
CORAL, IIT Kharagpur · Jan – May 2022
Ran laboratory and data-analysis sessions for postgraduate students.
Mentoring
MSc student, University of Reading · 2026
Role of internal and external forcing in the tropical arm of Atlantic multidecadal variability
PhD student, IIT Kharagpur · 2023 – present
Drivers of the delayed onset of the Indian summer monsoon
PhD student, IIT Kharagpur · 2023 – present
A horseshoe salinity pattern in the Indian Ocean
Service
Recognition
To present my PhD research at AGU Fall Meeting 2022.
Awarded by the British Antarctic Survey for a six-month research visit to APL, JAMSTEC, Japan. The work led to a JGR-Oceans paper.
All India Rank 63. Independent CSIR research fellowship and eligibility for Assistant Professor posts in India.
Independent doctoral fellowship awarded to about 1 in 1,000 top basic-science students in India.
First rank, M.Sc. Oceanography, Berhampur University.
B.Sc. Physics (Hons.), Talcher Autonomous College.
Altmetric 665 · #1 in JGR-Oceans
Covered by Phys.org, MSN, Technology Networks, The Inertia, Yahoo! News, Pravda, CNN Indonesia, ScienceAlert and others. I was also interviewed by BBC Studios for Blue Planet about this research.
Read the paperGeophysical Research Letters
Covered by EurekAlert!, Phys.org, Eurasia Review, Mirage News and others.
Read the paperBlog · 15 Dec 2023
A plain-language article for Weather and Climate @ Reading, the Department of Meteorology blog.
Read the postContact
I welcome enquiries about collaboration, seminars, student projects and media requests.