A5080875193- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Air Quality and Health Impacts
- COVID-19 impact on air quality
- Global Energy and Sustainability Research
- Climate Change Policy and Economics
- Environmental Impact and Sustainability
- Meteorological Phenomena and Simulations
- Infection Control and Ventilation
- Climate Change and Health Impacts
- COVID-19 Pandemic Impacts
- COVID-19 and Mental Health
- Wind Energy Research and Development
- Energy Load and Power Forecasting
- Remote-Sensing Image Classification
- Urban Green Space and Health
- Atmospheric and Environmental Gas Dynamics
- Magnetic Properties and Synthesis of Ferrites
- Nanoparticle-Based Drug Delivery
- Iron oxide chemistry and applications
- Climate variability and models
- COVID-19 epidemiological studies
- Wind and Air Flow Studies
Birla Institute of Technology, Mesra
2015-2025
Indian Institute of Science Bangalore
2011-2013
Udaipur Solar Observatory
2005-2010
Anthropogenic aerosols play a crucial role in our environment, climate, and health. Assessment of spatial temporal variation anthropogenic is essential to determine their impact. Aerosols are natural origin together constitute composite aerosol system. Information about either component needs elimination the other from In present work we estimated fraction (AF) over Indian region following two different approaches inter-compared estimates. We espouse multi-satellite data analysis model...
Sea-salt aerosols, prominent natural aerosols over the ocean, play a vital role in direct and indirect radiative forcing. Since surface winds are prime cause of sea-salt generation, we have developed an empirical relationship between aerosol optical depth (AOD) sea-surface study region (60–70°E; 40°S–20°N). The latitudinal variation background (τ0) wind index (b) estimated as they essential inputs for estimation spatial used Arabian Sea (AS) to generate heterogeneity aerosols. τ0 b show...
Abstract Aerosols are an integral part of Earth's climate system and their effect on makes this field a relevant research problem. The artificial neural network (ANN) technique is upcoming in different fields. In the current work, we have evaluated performance ANN with its parameters simulating aerosol's properties. evaluation performed over three sites (Kanpur, Jaipur, Gandhi College) Indian region. We for model's hyperparameter (number hidden layers) optimizer's hyperparameters (learning...
Mineral dust constitutes the single largest contributor of natural aerosols over continents. The first step towards separating aerosol radiative impact from its anthropogenic counterparts continents is to gather information on aerosols. infrared (IR) radiance (10.5–12.5 μm) acquired Kalpana-I satellite (∼8-km resolution) was used retrieve regional characteristics Afro-Asian region during winter 2004, coinciding with a national campaign. Here, we aerosol-induced IR depression as an index...
Background: A novel coronavirus pneumonia pandemic broke out, which ultimately spread over the world and affected public health. Global growth has been impeded, societal instability brought about, overall mental health adversely by COVID-19 pandemic. Health care workers, especially nurses, experienced an extensive amount of occupational stress, emotional discomfort during this period. One positive factors that enable people to overcome psychological hardship enhance perseverance in their...
Abstract In the present work, we explored inherent characteristics of wind over a complex terrain site ‘Ranchi’ situated near strategic location monsoon trough with various mathematical and statistical tools, i.e., time-series analysis, Fast Fourier transform (FFT), FFT coefficients, wavelet decomposition, Weibull distribution. The analysis showed rapid day-to-day variability seasonal variation peak during summer. coefficients were concentrated for winter/post-monsoon, indicating lower...
In this paper, we evaluate the performance of chemical transport model 'CHIMERE' over large Indian region (4-37.5°N; 67-88.5°E) for multiple years (2006, 2007 and 2008) by comparing simulations with concurrent aerosol measurements from different locations. Model simulated near-surface black carbon mass concentrations agreed satisfactorily at various locations (oceanic, inland island sites), in general, except during monsoon months, when underpredicted measurements. Similar results were...
In order to understand the regional climate implications of aerosols over Indo-Gangetic Plains (IGP), a major Indo-US field experiment, Ganges Valley Aerosol Experiment (GVAX) was conducted during 2011-12. Atmospheric Radiation Measurement (ARM) mobile facility (AMF) deployed at northern Plain high-altitude site, Manora Peak, Nainital (29 degrees 21'33.84 `' N, 79 27'29.27 E, 1980 m amsl) in Central Himalayas, for an year-round measurement aerosols, clouds and other climate-relevant...