Shwetal Shah

Spatial and Temporal variations of Organic Chemical compounds in Ambient Air from Ahmedabad City, Gujarat, India

Research Journal of Chemistry and Environment

Organic contaminants linked to atmospheric particulate matter have been a major source of worry a... more Organic contaminants linked to atmospheric particulate matter have been a major source of worry across the world since the last decade. The ambient air samples were collected from three sites in Ahmedabad city for spatial and temporal variation using a High-Volume Air Sampler (HVAS) to examine the morphology and elemental composition of fine and ultrafine particles by using a Scanning electron microscope (SEM) and an energy dispersive X-ray system (EDAX) from PM2.5. The Si, C, O, Cl, Na, Al, K, Ca and Mg were found to be quite abundant in the EDAX spectra. Transition elements such as Ti, Zn, Cu, S and Fe were registered, indicating the influence of industry in liberating the abundance of fine and ultrafine particles. In addition, the organic chemical compounds were screened by using GC–MS. A total of 230 organic chemicals were detected, including 187 aliphatic and 43 aromatic chemical compounds at three different locations. Results show that aliphatic and aromatic hydrocarbon compou...

Residential Energy Management System Using Fuzzy Logic

2023 IEEE 8th International Conference for Convergence in Technology (I2CT)

Uncertainty assessment for climate change impact on intense precipitation: how many model runs do we need?

International Journal of Climatology, 2017

Precipitation projections are typically obtained from general circulation model (GCM) outputs und... more Precipitation projections are typically obtained from general circulation model (GCM) outputs under different future scenarios, then downscaled for hydrological applications to a watershed or site-specific scale. However, uncertainties in projections are known to be present and need to be quantified. Although GCMs are commonly considered the major contributor of uncertainty for hydrological impact assessment of climate change, other uncertainty sources must be taken into account for a thorough understanding of the hydrological impact. This study investigates uncertainties related to GCMs, GCM initial conditions and representative concentration pathways (RCPs) and their sensitivity to the selection of GCM runs in order to quantify the impact of climate change on extreme precipitation and intensity/duration/frequency statistics. The results from a large ensemble of 140 CMIP5 GCM runs including 15 GCMs, 3-10 GCM initial conditions and 4 RCPs are analysed. Albeit the choice of GCM is the major contributor (up to 65% for some cases) to intense precipitation change uncertainty for all return periods (1 year, 10 years) and aggregation levels (1-, 5-, 10-, 15-and 30-day), uncertainties related to the GCM initial conditions and RCPs of up to 38 and 23%, respectively, are found in some cases. The sensitivity analysis reveals that the GCM, RCP and GCM initial condition uncertainties are greatly influenced by the set of climate model runs considered, especially for more extreme precipitation at finer time scales.

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Extreme Rainfall Analysis for Urban Vaodara

Zenodo (CERN European Organization for Nuclear Research), Jan 19, 2019

Methane Mitigation in Crossbred Bullocks by Urea Treated Wheat Straw & Lucerne Straw Based Total Mixed Ration

Current Journal of Applied Science and Technology

Present experiment was conducted to study the effect of feeding lucerne straw and urea treated wh... more Present experiment was conducted to study the effect of feeding lucerne straw and urea treated wheat straw based TMR (Total Mixed Ration) on nutrients intake, digestibility of nutrients, rumen parameters, rumen microbial protein synthesis and enteric methane emissions in crossbred bullocks. Experiment was conducted on 15 crossbred bullocks for 50 days using Completely Randomized Design. The animals in control group (T1) were fed TMR with 70% wheat straw and 30% concentrate. The animals in experimental group T2 were fed TMR with 35% urea treated wheat straw, 35% wheat straw and 30% concentrate whereas, animals in T3 group were fed TMR with 35% lucerne straw, 35% wheat straw and 30% concentrate. The intakes of nutrients and rumen parameters were not affected by the treatments. Digestibility coefficients of crude protein (CP), ether extract (EE) and hemicellulose (HC) did not differ significantly among the groups. Similarly, digestibility coefficients of dry matter (DM) and nitrogen-fr...

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Developing baseline for future research on microplastic contamination in urban waters of Gujarat, through rapid evaluation of major water bodies in Ahmedabad

MICRO 2018. Fate and Impact of Microplastics: Knowledge, Actions and Solutions, 2018, ISBN 9788409064779, págs. 379-380, 2018

An Assessment of Impacts of Climate Change on Ambient Air Quality of Industrial, Urban and Rural Belts in and around Ahmedabad Metro City, Gujarat, India

Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute direc... more Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute directly by natural processes or indirectly through anthropogenic changes in the composition of the atmosphere. The impacts of climate change due to deforestation, industrialization, urbanization and agricultural practices on air quality and human health and ecosystem are vulnerable. The aim of this study was to correlate impacts of climate change on ambient air quality (AAQ: NOx, SOx, NH3, PM2.5, PM10 - µg/m3), meteorological parameters (MET: Temperature (°C), Surface Temp. (°C), Light Intensity (Lux), Wind Speed (kmh), Relative Humidity (%), greenhouse gases (GHG: CO2, N2O, CH4 - ppmv) and air quality index (AQI) of industrial (IN), urban (UR) and rural (RU) belts in and around Ahmedabad Metro City (AMC), Gujarat, India during Phase-I (P-I, January), Phase-II (P-II, February) and Phase-III (P-III, March) in 2021. Gradients of AAQ in studied zones was NOx (IN: 35.21, UR: 26.85, RU: 15.41), S...

Assessment of Climate Change Impact on Ambient Air Quality of Industrial, Urban and Rural Belts in and around Ahmedabad Metro City, Gujarat, India

Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute direc... more Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute directly by natural processes or indirectly through anthropogenic changes in the composition of the atmosphere. The impacts of climate change due to deforestation, industrialization, urbanization and agricultural practices on air quality and human health and ecosystem are vulnerable. The aim of this study was to correlate impacts of climate change on ambient air quality (AAQ: NOx, SOx, NH3, PM2.5, PM10 - µg/m3), meteorological parameters (MET: Temperature (°C), Surface Temp. (°C), Light Intensity (Lux), Wind Speed (kmh), Relative Humidity (%), greenhouse gases (GHG: CO2, N2O, CH4 - ppmv) and air quality index (AQI) of industrial (IN), urban (UR) and rural (RU) belts in and around Ahmedabad Metro City (AMC), Gujarat, India during Phase-I (P-I, January), Phase-II (P-II, February) and Phase-III (P-III, March) in 2021. Gradients of AAQ in studied zones was NOx (IN: 35.21, UR: 26.85, RU: 15.41), S...

Trend analysis of hydro-meteorological parameters and influence of anthropogenic activities in lower Narmada River basin, India

Physics and Chemistry of the Earth, Parts A/B/C

Acute need of Legal Framework for management of marine debris and Microplastics in India

Monitoring of Climate Change Impact on Air Quality of Industrial, Urban and Rural Belts in and around Ahmedabad Metro City, Gujarat, India

Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute direc... more Intergovernmental Panel on Climate Change (IPCC) stated that climate change could attribute directly by natural processes or indirectly through anthropogenic changes in the composition of the atmosphere. The impacts of climate change due to deforestation, industrialization, urbanization and agricultural practices on air quality and human health and ecosystem are vulnerable. The aim of this study was to correlate impacts of climate change on ambient air quality (AAQ: NOx, SOx, NH3, PM2.5, PM10 - µg/m3), meteorological parameters (MET: Temperature (°C), Surface Temp. (°C), Light Intensity (Lux), Wind Speed (kmh), Relative Humidity (%), greenhouse gases (GHG: CO2, N2O, CH4 - ppmv) and air quality index (AQI) of industrial (IN), urban (UR) and rural (RU) belts in and around Ahmedabad Metro City (AMC), Gujarat, India during Phase-I (P-I, January), Phase-II (P-II, February) and Phase-III (P-III, March) in 2021. Gradients of AAQ in studied zones was NOx (IN: 35.21, UR: 26.85, RU: 15.41), S...

Navroz K. Dubash, India in a Warming World – Integrating Climate Change and Development (New Delhi: Oxford University Press, 2019)

Liberal Studies, Jun 30, 2020

While focusing on India's reaction to Donald Trump's August 21st address to the US nation, this p... more While focusing on India's reaction to Donald Trump's August 21st address to the US nation, this piece gives a brief overview of reactions in Pakistan (both by the civilian leadership and the military). The piece will then give an overview of reactions in India, to both the harsh words used by Pakistan, as well as the US President's call to India to do more in Afghanistan. While it is tough to predict how US policy will pan out towards Afghanistan, one major shift in Trump's approach is that unlike previous US administration's he has not really drawn any red lines for India's role in Afghanistan.

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Understanding Uncertainty: Views from Kachchh, Mumbai, and Sundarbans

by Dr. Upasona Ghosh, SHIBAJI BOSE, and Shwetal Shah

Book Review - Navroz K. Dubash, India in a Warming World – Integrating Climate Change and Development (New Delhi: Oxford University Press, 2019)

In this book, Navroz Dubash has brought to its readers' various perspectives of different exp... more In this book, Navroz Dubash has brought to its readers' various perspectives of different experts from the field of climate science and policy and created a comprehensive volume in order to understand the Indian perspective on <em>Climate Change</em>. It is one such comprehensive and authentic compilation and also the first on this subject after the crucial Paris Agreement in 2015, comprising of different articles by various experts. Moreover, this edited volume is beyond scientific facts of climate change and comprises important angles of social, political, and financial issues associated with global development in this domain.

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Analysis of Climate Change Impacts on Rainfall Trends in the Orsang River Basin, India

World Environmental and Water Resources Congress 2019, 2019

Understanding Uncertainty: Views from Kachchh, Mumbai, and Sundarbans

Analysis of Long-Term Rainfall in the Watersheds of Mazam and Watrak River in a Sabarmati River Basin, India, for Climate Change Assessment

Lessons from Two Case Studies

Introduction India’s transportation sector produces over 13 percent of the country’s CO2 emission... more Introduction India’s transportation sector produces over 13 percent of the country’s CO2 emissions. As one of the most rapidly growing sectors in the country, transportation contributes to poor air quality and congestion in cities. Transportation is a leading cause of air pollution in Indian cities, and most fail to meet the national ambient air quality standards. Health impacts from exposure to high levels of ambient particulate matter are a significant public health challenge in India.1 The sector is heavily dependent on oil imports, which poses a major challenge to India’s energy security. Clean transport is therefore a priority policy goal at the national and subnational level. India’s business-as-usual projections show travel demand will increase from 6,962 billion passenger kilometres (bpkm) in 2010 to 30,517 bpkm in 2050.2 Driven by increasing population, incomes, and urbanisation, India’s transportation emissions are projected to increase six fold by 2050 from current levels.

Exploring public views on the issue of microplastics in relation to the recent government imposed plastic ban in western part of India: perceived causes, perception of stakeholders and the degree of change in the understanding of the issue

How States Can Drive the Next Era of Climate Management in India: Perspectives in Mainstreaming Climate Actions from Gujarat

International Journal of Environment and Climate Change

At the September 2019 UN climate action summit, India vowed to upscale its climate action by focu... more At the September 2019 UN climate action summit, India vowed to upscale its climate action by focusing on a low carbon pathway through renewables and other forms of clean energy, adopting sustainable mobility, preserving water, and securing finances for this transition. Implementing and up scaling these actions form an influential agenda under India’s Nationally Determined Contributions (NDCs) to the Paris Agreement. The emphasis on national determination and its success strongly hinges on the ambition of the states and the seriousness it has for driving climate actions. The initial step is to streamline such activities at sub-national levels to achieve climate change goals. Indian states, like countries, are too at different starting points with dissimilarities in their economic and developmental interests. Climate priorities took center stage for a few states, while many others have not been too aspirational due to misplaced prerogatives and differing capabilities. Thus, a pertinen...

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