A5045886263- Lightning and Electromagnetic Phenomena
- Fire effects on ecosystems
- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Plant Water Relations and Carbon Dynamics
- Atmospheric chemistry and aerosols
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Precipitation Measurement and Analysis
- Atmospheric Ozone and Climate
- Thermal Analysis in Power Transmission
- Earthquake Detection and Analysis
- Radioactivity and Radon Measurements
- Plant responses to water stress
- High voltage insulation and dielectric phenomena
- Ocean Waves and Remote Sensing
- Solar and Space Plasma Dynamics
- Wind and Air Flow Studies
- Data Visualization and Analytics
- Electrohydrodynamics and Fluid Dynamics
- Oceanographic and Atmospheric Processes
- Plant responses to elevated CO2
- Impact of Light on Environment and Health
- Tree Root and Stability Studies
- Radio Wave Propagation Studies
Indian Institute of Tropical Meteorology
2014-2024
Ministry of Earth Sciences
2020-2024
The electrical conductivity measured over the Indian Ocean (15°N, 77°E to 20°S, 58°E) during Experiment (INDOEX‐1999) from 20 January 12 March 1999 has been analyzed. values two oceanic regions, one with very low aerosol concentration and another high concentration, are studied in relation meteorological parameters such as relative humidity sea level pressure. average is 0.295 × 10 −14 Sm −1 region of it 0.783 concentration. In both shows an inverse this effect more presence hydrate growth...
ABSTRACT The spatial distribution of convective available potential energy ( CAPE ) and lightning activity in different seasons over the Indian region have been studied to find out dependence on . It is observed that not controlled by alone during pre‐monsoon season. prevailing meteorological conditions orography northern India, central northeast Pakistan Bangladesh provide favourable for formation thunderstorms, hence, higher spite lower value these regions compared other parts region....
Abstract Many studies in recent times have suggested that long‐term changes Convective Available Potential Energy (CAPE) are associated with the convective activity and atmospheric energy budget and, hence, CAPE could be used as a potential indicator of climate change. Here, we analyse daily radiosonde data 32 stations over Indian region from 1984 to 2008 (25 years), study climatology CAPE, lower troposphere moisture content upper tropospheric temperature. Using gridded rainfall this region,...
Abstract Four years of Indian Institute Tropical Meteorology lightning location network observation data are used to determine the seasonal and spatial (over different geographical locations) distribution ratio intra‐cloud (IC) cloud‐to‐ground (CG) in thunderstorms over subcontinent. The is high (6–10) northwestern parts low (0.5–3.5) northeastern parts. No prominent latitudinal variation IC CG exists, but a climatological variability exists all regions. In pre‐monsoon season (March–May),...
Abstract During the Indian winter, southerly propagation of cold air at middle and upper altitudes is caused by a trough in westerly jet streams due to effect Western Disturbances (WDs). Sometimes, this advection dry above near‐surface moist warm can make atmosphere conditionally unstable. Therefore, these WDs are associated with thunderstorm formation lightning activity over northern India (north 20° north); however, occasionally, extends up entry point southern India. The satellite...
Abstract Lightning flash rate data measured by the Tropical Rainfall Measuring Mission (TRMM) for period 1996–2013 over India are analysed to study spatial and temporal variation of lightning during different seasons. The convective available potential energy (CAPE) other thermodynamic parameters same taken analysis. This confirms a systematic increase in density last two decades. annual is high along windward side Himalayan foothills with peaks, one northwestern parts (>50 flashes·km −2...
Abstract During August 2018 and 2019 the southern state of India, Kerala, received unprecedented heavy rainfall, which led to widespread flooding. We aim characterize convective nature these events large-scale atmospheric forcing, while exploring their predictability by three state-of-the-art global prediction systems: National Centers for Environmental Prediction (NCEP)-based India Meteorological Department (IMD) operational Global Forecast System (GFS), European Centre Medium-Range Weather...
Abstract With future global warming projections, how lightning activity changes in the warmer world is still a debated and challenging question. During Indian pre‐monsoon season (March–May), land surface heating moisture availability due to prevailing winds from neighbouring oceans provide favourable conditions for thunderstorm formation. Based on 24 years of data 2000 2023 detected by Lightning Imaging Sensor/Optical Transient Detector (LIS/OTD) Location Network (ILLN), trend flashes over...