A5027474285- Climate variability and models
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Geophysics and Gravity Measurements
- earthquake and tectonic studies
- Plant Water Relations and Carbon Dynamics
- Precipitation Measurement and Analysis
- Atmospheric aerosols and clouds
- Earthquake Detection and Analysis
- COVID-19 impact on air quality
- Hydrology and Drought Analysis
- Air Quality Monitoring and Forecasting
- GNSS positioning and interference
- High-pressure geophysics and materials
- Lightning and Electromagnetic Phenomena
- Air Quality and Health Impacts
- Geological and Geochemical Analysis
- Marine and coastal ecosystems
- Soil Moisture and Remote Sensing
- Underwater Acoustics Research
- Coastal and Marine Dynamics
- Fire effects on ecosystems
- Seismic Waves and Analysis
National Institute of Technology Rourkela
2015-2024
Indian Institute of Technology Kharagpur
2011-2013
In recent years, and particularly from 2000 onwards, the North Indian Ocean (NIO) has been acting as a major sink of ocean heat that is clearly visible in sub-surface warming trend. Interestingly, part NIO—the Arabian Sea (AS) sector—witnessed dramatic variations direct repercussion on intense Tropical Cyclone (TC) activity. This study investigated possible causative factors physical mechanisms towards multi-decadal trends surface waters over AS region. Responsible are examined using...
Abstract Groundwater usage in the Indo‐Gangetic plains exceeds replenishment of aquifers, leading to substantial reduction mass. Such anthropogenic crustal unloading may promote long‐term fault slip or modulate seismic activity adjoining Himalayan region. Our simulation using Gravity Recovery and Climate Experiment data hydrological models such a process indicates that thrust earthquakes on Main Thrust (MHT), including recent 25 April 2015 Mw 7.8 Gorkha, Nepal earthquake, are probably...
Abstract The interaction between seasonally-induced non-tectonic and tectonic deformation along the Himalayan plate boundary remains debated. Here, we propose that this can be significantly influenced by induced hydrological loading cycles. We explore seasonal mass oscillations continental water storage in Southeast Asia arc region using continuous Global Positioning System measurements satellite data from Gravity Recovery Climate Experiment. suggest substantially higher transient...
Abstract. Particulate emissions can alter the physical and dynamical properties of cloud systems and, in turn, amplify rainfall events over orographic regions downwind highly polluted urban areas. The Indo-Gangetic Plain, one most world, is located upwind Himalayan foothills. region, therefore, provides an opportunity for studying how aerosol effects, connection with forcing, affect extreme events. This study uses 17 years (2001–2017) observed rain rate, optical depth (AOD), meteorological...
Abstract The sensitivity of the simulated tropical cyclone (TC) intensity and tracks to different ocean mixed‐layer depth (MLD) initializations is studied using coupled weather research forecasting (WRF) (OML) models. Four sets numerical experiments are conducted for two TCs formed during pre‐ post‐monsoon. In control run (CONTROL), WRF model initialized without coupling. second experiment, WRF‐OML by prescribing MLD as a constant 50 m (MLD‐CONST). third spatial varying obtained from...
Abstract The non-tectonic deformation, either of natural or anthropogenic origin, may influence the earthquake occurrence process and seismicity rate along plate-boundary ‘stable’ plate-interiors domains. low magnitude but moderate Delhi region on stable domains India, exhibits significant variation both in short-term at annual seasonal scale long-term decadal scale. It correlates with groundwater pumping for extensive irrigation, urban activities, seasonally controlled hydrological loading...
Abstract India experienced several unprecedented floods in the recent decades. The increase extreme rainfall events (EREs) is primary cause for these floods, manifesting its societal impacts. daily downscaled and bias corrected (DBC) Coupled Model Intercomparison Project Phase 6 (CMIP6) sea surface temperature (SST) are prepared Indian region utilized to examine characteristics of EREs. DBC products capture characteristic features EREs baseline period, which inspired us assess over CMIP6...
The variability of mixed layer depth (MLD) and barrier thickness (BLT) has profound implications on energy exchange processes at the air-sea interface. More important is role MLD BLT in genesis intensification weather systems. physical chemical changes that take place within these layers have significance biological productivity oceans. In this study, monthly evolution for Indian Ocean was compared using state-of-art world ocean atlas (WOA) a recently developed comprehensive [referred to as...
Our study aims to understand the variability of oceanic mesoscale eddies during contrasting (2009 and 2013) monsoon seasons role such on atmospheric deep convection over Bay Bengal (BoB). Oceanic are detected tracked using sea surface height anomalies (SSHA), by employing Okubo-Weiss parameter eddy detection method. Significant differences in SSHA activity evident years. During year 2013 (2009), anticyclonic predominant (absent) eastern BoB longer (shorter) lifespans cyclonic observed...
The present work analyses climatological variations of Convective Available Potential Energy (CAPE) and Inhibition (CIN) over the eastern India (Odisha, West Bengal Jharkhand) during pre-monsoon season, where thunderstorms are frequent disastrous. utilises European Centre for Medium-Range Weather Forecast (ECMWF) reanalysis data: ERA-5 1987-2016, supplemented with information about thunderstorm occurrences region from Meteorological Department (IMD). CAPE CIN values can differentiate days...