Shubha Verma
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View article: Aerosols drive monsoon rainfall spatial modulations over the Indian subcontinent: anthropogenic and dust aerosols impact, mechanism, and control
Aerosols drive monsoon rainfall spatial modulations over the Indian subcontinent: anthropogenic and dust aerosols impact, mechanism, and control Open
Spatial modulations in monsoon rainfall over the Indian subcontinent, characterized by persistent weakening and strengthening patterns, are yet to be understood in the context of the role of spatial heterogeneity in aerosol species (anthro…
View article: Simulations of cumulative and relative impact of aerosol species over the Hindu Kush Himalayan region: validation, implications on glacier runoff, and source control
Simulations of cumulative and relative impact of aerosol species over the Hindu Kush Himalayan region: validation, implications on glacier runoff, and source control Open
The Hindu Kush Himalayan (HKH) region holds substantial strategic significance owing to its extensive reserves of pristine water in the form of glaciers. In recent years, significant levels of particulate pollution have been documented wit…
View article: Modelling of Haze Episode over Delhi Region using a Chemistry-Transport Model: Contribution of Emission and Meteorology
Modelling of Haze Episode over Delhi Region using a Chemistry-Transport Model: Contribution of Emission and Meteorology Open
Haze episodes are often shrouded over Delhi-NCR and most of the Northern Indo-Gangetic Plain during the Post-Monsoon and Winter seasons, posing a huge negative burden on human health, the environment, and the economy. The combined influenc…
View article: Cumulative and relative impact of aerosol species on snowmelt runoff from the Hindu Kush Himalayan glaciers
Cumulative and relative impact of aerosol species on snowmelt runoff from the Hindu Kush Himalayan glaciers Open
Himalayan glaciers are a significant contributor to the global supply of snowmelt water and serve as the primary source for major rivers in South Asia. In this study, we have evaluated the effect of aerosol species on glaciers in the Hindu…
View article: Organic carbon health burden in the Indo-Gangetic Plain: Exposures, risks, and mitigation
Organic carbon health burden in the Indo-Gangetic Plain: Exposures, risks, and mitigation Open
Organic carbon (OC) aerosols are complex carbon-containing particles suspended in the atmosphere. OC accounts for a large fraction of atmospheric aerosol and significantly affects air quality, atmospheric chemistry, human health, and clima…
View article: Radiative effects of pre-monsoon dust and anthropogenic aerosols over India
Radiative effects of pre-monsoon dust and anthropogenic aerosols over India Open
Recent investigation of aerosols from global aerosol multi-models show that forward model simulations were unable to reproduce the ground-based station-observed aerosol optical depth (AOD) and their spatial distribution over the Indian sub…
View article: Role of anthropogenic and dust aerosols in spatially modulating the rainfall over India
Role of anthropogenic and dust aerosols in spatially modulating the rainfall over India Open
An inconsistent prediction of aerosol species distribution over the Indian subcontinent has so far limited our understanding of their potential linkages to Indian Meteorological Department (IMD) measurements inferred spatial modulations (w…
View article: Identification of Critical Locations for Improvement of Air Quality Developing a Prioritized Clean Air Assessment Tool (PCAT)
Identification of Critical Locations for Improvement of Air Quality Developing a Prioritized Clean Air Assessment Tool (PCAT) Open
Fourteen Indian cities, including urban and rural locations, were chosen for the present study across India, with unhealthy air quality based on National Air Quality Index (NAQI > 100). However, it was found that NAQI values over the locat…
View article: Ambient aerosol variation in India during the COVID-19 lockdown : Simulations from high resolution chemical transport model (CHIMERE)
Ambient aerosol variation in India during the COVID-19 lockdown : Simulations from high resolution chemical transport model (CHIMERE) Open
On March 10th 2020, COVID-19 was categorised as a global pandemic by the World Health Organisation (WHO), concerned both by the alarming levels of spread and severity across 114 countries. On account of this, India announced the first nati…
View article: Black carbon health impacts in the Indo-Gangetic plain: Exposures, risks, and mitigation
Black carbon health impacts in the Indo-Gangetic plain: Exposures, risks, and mitigation Open
A large discrepancy between simulated and observed black carbon (BC) surface concentrations over the densely populated Indo-Gangetic plain (IGP) has so far limited our ability to assess the magnitude of BC health impacts in terms of popula…
View article: Wintertime direct radiative effects due to black carbon (BC) over the Indo-Gangetic Plain as modelled with new BC emission inventories in CHIMERE
Wintertime direct radiative effects due to black carbon (BC) over the Indo-Gangetic Plain as modelled with new BC emission inventories in CHIMERE Open
To reduce the uncertainty in climatic impacts induced by black carbon (BC) from global and regional aerosol–climate model simulations, it is a foremost requirement to improve the prediction of modelled BC distribution, specifically over th…
View article: Investigation of atmospheric aerosols over semi-urban and urban areas in Eastern Indo-Gangetic Plain: seasonal variability and source apportionment using PMF
Investigation of atmospheric aerosols over semi-urban and urban areas in Eastern Indo-Gangetic Plain: seasonal variability and source apportionment using PMF Open
<p>The study investigates the chemical composition and source of aerosol origin at a semi-urban (Kharagpur&#8211;Kgp) and urban (Kolkata&#8211;Kol) region during the period February 2015 to January 2016 and September 2010 to …
View article: Sensitivity of the hydrological cycle to aerosol type and amount using high-resolution&#160;weather research and forecasting model over India
Sensitivity of the hydrological cycle to aerosol type and amount using high-resolution weather research and forecasting model over India Open
<p>The present study is aimed to provide a quantitative prediction of the comparative impact of aerosol types on the changing pattern of the Indian summer monsoon (ISM) rainfall over recent years. Specific regions with contrasting fe…
View article: Black carbon sanitary burden in the Indo-Gangetic plain: exposures, risks and mitigation
Black carbon sanitary burden in the Indo-Gangetic plain: exposures, risks and mitigation Open
A large discrepancy between simulated and observed black carbon (BC) surface concentrations over the densely populated Indo-Gangetic plain (IGP) has so far limited our ability to assess the magnitude of BC sanitary impacts in terms of popu…
View article: Wintertime radiative effects of black carbon (BC) over Indo-Gangetic Plain as modelled with new BC emission inventoriesin CHIMERE
Wintertime radiative effects of black carbon (BC) over Indo-Gangetic Plain as modelled with new BC emission inventoriesin CHIMERE Open
To reduce the uncertainty in the black carbon (BC) induced climatic impacts from the global and regional aerosol-climate model simulations, it is a foremost requirement to improve the prediction of modelled BC distribution. And that specif…
View article: Evaluation of emission strength efficacy in simulating black carbon burden with CHIMERE: estimating wintertime radiative effect over Indo-Gangetic Plain
Evaluation of emission strength efficacy in simulating black carbon burden with CHIMERE: estimating wintertime radiative effect over Indo-Gangetic Plain Open
<p>Black carbon (BC) aerosols over the Indian subcontinent have been represented inadequately so-far in chemical transport models restricting the accurate assessment of BC-induced climate impacts. The divergence between simulated and…
View article: Simulations of black carbon (BC) aerosol impact over Hindu-Kush Himalayan sites: validation, sources, and implications on glacier runoff
Simulations of black carbon (BC) aerosol impact over Hindu-Kush Himalayan sites: validation, sources, and implications on glacier runoff Open
<p>Absorbing aerosols such as black carbon (BC) affects the cryospheric equilibrium by altering the ablation rate of snow. The influence of the albedo change on the glacial mass balance due to excess and earlier snow melting, and the…
View article: Simulations of black carbon (BC) aerosol impact over Hindu Kush Himalayan sites: validation, sources, and implications on glacier runoff
Simulations of black carbon (BC) aerosol impact over Hindu Kush Himalayan sites: validation, sources, and implications on glacier runoff Open
We estimated the black carbon (BC) concentration over the Hindu Kush Himalayan region (HKH), its impact on snow albedo reduction, and sensitivity on annual glacier runoff over the identified glaciers. These estimates were based on free-run…
View article: Long-term groundwater recharge rates across India by in situ measurements
Long-term groundwater recharge rates across India by in situ measurements Open
Groundwater recharge sustains groundwater discharge, including natural discharge through springs and the base flow to surface water as well as anthropogenic discharge through pumping wells. Here, for the first time, we compute long-term (1…
View article: Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain
Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain Open
Ambient fine aerosols and their sources were evaluated in an eastern Indian megacity, Kolkata (KOL), from September 2010 to August 2011. A submicron aerosol sampler (SAS) with two stage stacked filter units (SFU) was devised for simultaneo…
View article: Simulations of black carbon (BC) aerosol impact over Hindu-Kush Himalayan sites: validation, sources, and implications on glacier runoff
Simulations of black carbon (BC) aerosol impact over Hindu-Kush Himalayan sites: validation, sources, and implications on glacier runoff Open
We estimated the black carbon (BC) concentration over the Hindu Kush Himalayan region (HKH), its impact on snow-albedo reduction and sensitivity on annual glacier runoff over the identified glaciers. These estimates were based on free-runn…
View article: Data for: Dataset of pre-monsoon aerosol species optical depth and concentration estimated from constrained simulation approach over the Indian subcontinent
Data for: Dataset of pre-monsoon aerosol species optical depth and concentration estimated from constrained simulation approach over the Indian subcontinent Open
The specifications of the dataset of constrsimu estimates is given in Table 1. The data provided with this article (refer to Table 2) comprises of estimate of aerosol concentration and aerosol optical depth obtained from constrsimu. The pr…
View article: Long-term groundwater recharge rates across India by in situ measurements
Long-term groundwater recharge rates across India by in situ measurements Open
Groundwater recharge sustains groundwater discharge, including natural discharge through springs and base flow to surface water as well as anthropogenic discharge through pumping wells. Here, for the first time, we compute long-term (1996–…