A5055732060- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Cryospheric studies and observations
- Tropical and Extratropical Cyclones Research
- Plant-Microbe Interactions and Immunity
- Solar Radiation and Photovoltaics
- Meteorological Phenomena and Simulations
- Plant Genetic and Mutation Studies
- Climate variability and models
- Water Quality Monitoring and Analysis
- Air Quality and Health Impacts
- Remote Sensing in Agriculture
- Advanced Differential Geometry Research
- Earthquake and Tsunami Effects
- Geological and Geophysical Studies
- Legume Nitrogen Fixing Symbiosis
- High Altitude and Hypoxia
- Radiative Heat Transfer Studies
- Plant tissue culture and regeneration
- COVID-19 impact on air quality
- Nuclear Physics and Applications
Bhagwant University
2024-2025
Sharda University
2011-2014
Chapman University
2010-2012
CSIR National Physical Laboratory of India
1991-2008
Indian Institute of Technology Kanpur
2005
George Mason University
2005
Aerosol mixtures composed of coarse mode desert dust combined with fine combustion generated aerosols (from fossil fuel and biomass burning sources) were investigated at three locations that are in and/or downwind major global aerosol emission source regions. Multiyear monitoring data Robotic Network sites Beijing (central eastern China), Kanpur (Indo‐Gangetic Plain, northern India), Ilorin (Nigeria, Sudanian zone West Africa) utilized to study the climatological characteristics optical...
Abstract. We present the first Multi-Axis-(MAX-) DOAS observations in India performed during April 2010 and January 2011 Delhi nearby regions. The MAX-DOAS instrument was mounted on a car roof, which allowed us to perform measurements along individual driving routes. From closed circles around Delhi, together with information wind speed direction, NOx emissions from greater area were determined: our estimate of 4.4 × 1025 molecules s−1 is found be slightly lower than corresponding emission...
Abstract. Atmospheric aerosols over south Asia constitute a major environmental and climate issue. Thus, extensive land cruise campaigns have been conducted the area focusing on investigating aerosol properties implications. Except from ground-based instrumentation, several studies dealt with analyzing space, mainly spatial distribution of optical depth (AOD) possible feedbacks monsoon system. However, except some works using instrumentation or satellite observations specific region, there...
A synergy of satellite and ground‐based radiometric observations, along with chemical transport modeling, was used for the assessment influence drought monsoon conditions 2002 prolonged dry pre‐monsoon period 2003 on aerosol properties over south Asia, emphasis northern India. Reanalysis data are also examined studying anomalous from climatological mean, that show prevalence westerlies under anticyclonic circulation subsidence favoring accumulation aerosols. TRMM observations Asia indicate...
Twenty one isolates of Trichoderma spp. were isolated from the rhizosphere chickpea evaluated for salt and thermo tolerance, plant growth promoter antagonists to Rhizoctonia bataticola causing dry root rot in chickpea. Eleven (Tr5, Tr6, Tr8, Tr9, Tr10, Tr11, Tr13, Tr16, Tr17, Tr20 Tr21) exhibited high antagonistic activity against R. (more that 70% inhibition fungal growth). Our findings indicated significant correlation between promotion antagonism rot. Four namely & Tr13 showed more...
Ganga basin extends 2000 km E-W and about 400 N-S is bounded by Himalayas in the north. This unequivocally found to be affected high aerosols optical depth (AOD) (>0.6) throughout year. restricts movement of toward north as a result dynamic nature aerosol seen over basin. High AOD this region has detrimental effects on health more than 460 million people living part India besides adversely affecting clouds formation, monsoonal rainfall pattern Normalized Difference Vegetation Index (NDVI)....
The aim of this study was to find and characterize Trichoderma isolates by antagonistic enzymatic activity evaluate their potential as biocontrol agents against Dry root rot (DRR). were isolated from thepulses rhizosphere different districts Uttar Pradesh. Twenty one identified using ribosomal DNA internal transcribed spacer (ITS) regions translation elongation factor 1-alpha (tef1). In addition, profiling done indicated strong cell wall degrading enzyme activities plant growth promoting...
Measurements of direct UV irradiances (using a MICROTOPS II Sunphotometer) carried out from high‐latitude site, Antarctica are presented. The instantaneous at 305±0.9, 312±0.9 and 320±1.0 nm during no‐ozone‐hole (13 December 2004) an ozone‐hole (4 October period have been observed to be about 0.031, 0.150 0.299 W m−2 0.010, 0.049 0.102 m−2, respectively local noontime. observations the compared with tropospheric ultraviolet visible (TUV) radiation transfer model calculations. estimate shows...