Professor
Centre for Ocean, River, Atmosphere and Land Sciences (CORAL)
+91-3222-281820
My research career spans over three and half decades, focusing on process-level understanding of the atmospheric boundary layer (ABL) and its role in weather extremes, urban climates, air–sea interactions, and coastal vulnerability, with emphasis on the Indian region. A key contribution is establishing physical linkages between surface processes and high-impact weather and climate extremes. Using field experiments, long-term observations, and high-resolution numerical modelling, the research has shown how land–atmosphere interactions, surface energy balance, and boundary-layer turbulence govern the initiation and evolution of pre-monsoon thunderstorms, fog, heatwaves, and mesoscale convective systems, improving understanding of predictability limits at convective scales in the tropics.
A major strength is pioneering contributions to urban climate science in India. Integrating satellite remote sensing, urban canopy models, and regional climate models, quantified urban heat island intensity, energy balance, aerosol–radiation interactions, and outdoor thermal comfort in major cities. The findings demonstrate how rapid urbanization and land-use change intensify heat stress, alter boundary-layer structure, and influence extreme rainfall, providing a basis for climate-resilient urban planning. Contributions to air–sea interaction and coastal processes include advancing understanding of marine boundary-layer dynamics, ocean mixed-layer processes, barrier layers, and cyclone–ocean feedbacks over the Bay of Bengal and the Indian Ocean. The research on tropical cyclone intensity, storm surge, coastal inundation, and compound flooding, supporting coastal risk reduction.
Methodologically, the research integrates major field campaigns (CTCZ, STORM, BOBMEX, INDOEX, MONTBLEX, LASPEX) with process-based diagnostics and model evaluation, improving parameterizations in boundary-layer, land-surface, and dispersion models. Beyond publications, the work has had lasting impact through supervision of M.Tech and PhD students contributing to academia, research institutions, and operational agencies. Overall, this research has strengthened India’s capacity in urban climate studies, extreme weather modelling, and coastal hazard assessment while contributing to broader understanding of tropical boundary-layer processes under climate change.
Area of Research: Observations and Modeling of Extreme Events
Area of Research: Atmospheric Modeling
Area of Research: Urban Boundary Layer climate - LULC changes
Area of Research: Tropical Cyclone Track Prediction and > its impact using Machine Learning
Area of Research: Land Surface Modeling
Thesis Title: Impact of Soil Moisture on Simulation of Bay of Bengal Tropical Cyclones after Landfall: Optimization of Noah Land Surface Model
Area of Research: Predictability analysis using multifractal cascade dynamics
Thesis Title: Predictability and Multiscaling behavior of Spatially Anisotropic Multifractal Cascades: Geophysical Implications
Area of Research: Prediction of thunderstorms
Thesis Title: Coupling of Land-Atmosphere Feedback for Prediction of Summer Monsoon Processes over India
Area of Research: Coastal Vulnarability
Thesis Title: Coastal Vulnerability Assessment Studies for the West Bengal Coast, India
Area of Research: Urban Boundary Layer
Thesis Title: Modelling and Assessment of Outdoor Thermal Comfort Using WRF-UCM and ML Approaches over Indian Cities
Area of Research: AirPollution Modeling and Meteorological Applications
Thesis Title: Dispersion of Oxides of Nitrogen using offline coupled Mesoscale Atmospheric and Dispersion Models over Inland and Coastal Regions
Area of Research: Observations and Modeling of Atmospheric Processes
Thesis Title: High-Resolution Retrieval and Spatiotemporal Analysis of Aerosol Optical Depth Over Cities of the Indo-Gangetic Plain: Impacts of Land Use Change
Area of Research: Dynamics of Atmospheric Processes
Thesis Title: Impact of urbanization on Urban Heat Island and Surface Energy Balance over Indian Cities using Remote Sensing and Mesoscale Modelling
Area of Research: Observations and Modeling of Thunderstorms
Thesis Title: Mesoscale Modeling of Trailing Stratiform Squall Lines over the Gangetic West Bengal Region of India:Impact of 3DVAR Data Assimilation
Area of Research: Meso-scale modeling of Air Pollution Dispersion modeling over a complex coastal terrain
Thesis Title: Modeling of Atmospheric Dispersion of Nitrogen Oxides over Complex Terrain and Coastal Regions using Mesoscale Lagrangian Particle Dispersion Model
Area of Research: Simulation of Indian Summer Monsoon using Regional Climate Model
Thesis Title: Investigation of Interannual and Intraseasonal Variability of Indian Summer Monsoon using high resolution Regional Climate Model
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