Anthropogenic forcing exacerbating the urban heat islands in India

Raj, Sarath; Paul, Saikat Kumar; Chakraborty, Arun; Kuttippurath, J.

doi:10.1016/j.jenvman.2019.110006

Cited by 73 publications

(23 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was reported that estimated anthropogenic heat from the image was greater than source-specific field data-centric estimated heat ( Wang et al., 2020 ), but field data based in situ measurements are highly dependent on data availability ( Firozjaei et al., 2020 ) and in the third world country which puts a hindrance on such studies. On the other hand, remote sensing-based image data has become an alternative which helps to retrieve AHF of larger geographical area ( Raj et al., 2020 ). From the previous studies, it became clear that with increasing human pressure and anthropogenic activities, AHF is getting enhanced and the global eco-environment has become more vulnerable ( Nguyen and Liou, 2019a , b ).…”

Section: Introductionmentioning

confidence: 99%

Effects of lockdown due to COVID-19 outbreak on air quality and anthropogenic heat in an industrial belt of India

Pal

Das

Mandal

et al. 2021

Journal of Cleaner Production

View full text Add to dashboard Cite

Highly urbanized and industrialized Asansol Durgapur industrial belt of Eastern India is characterized by severe heat island effect and high pollution level leading to human discomfort and even health problems. However, COVID-19 persuaded lockdown emergency in India led to shut-down of the industries, traffic system, and day-to-day normal work and expectedly caused changes in air quality and weather. The present work intended to examine the impact of lockdown on air quality, land surface temperature (LST), and anthropogenic heat flux (AHF) of Asansol Durgapur industrial belt. Satellite images and daily data of the Central Pollution Control Board (CPCB) were used for analyzing the spatial scale and numerical change of air quality from pre to amid lockdown conditions in the study region. Results exhibited that, in consequence of lockdown, LST reduced by 4.02 °C, PM 10 level decreased from 102 to 18 μg/m 3 and AHF declined from 116 to 40W/m 2 during lockdown period. Qualitative upgradation of air quality index (AQI) from poor to very poor state to moderate to satisfactory state was observed during lockdown period. To regulate air quality and climate change, many steps were taken at global and regional scales, but no fruitful outcome was received yet. Such lockdown (temporarily) is against economic growth, but it showed some healing effect of air quality standard.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of lockdown due to COVID-19 outbreak on air quality and anthropogenic heat in an industrial belt of India

Pal

Das

Mandal

et al. 2021

Journal of Cleaner Production

View full text Add to dashboard Cite

show abstract

“…Amaravati has a Köppen Climate Classification subtype "Aw", i.e., ‘Tropical Savanna Wet’ climate with an average annual temperature is 28.6 °C. A study by Raj et al (2019) on cities that lie within 20 kms from Amaravati, showed that the annual mean urban heat island (UHI) intensity varied between 3−4 °C. Thereby increasing the cooling demand in the region.…”

Section: Methodsmentioning

confidence: 99%

“…In India a study of 44 cities having more than one million population, showed that the night-time urban heat island intensity was positive throughout the year. This suggested slow warming of urban and rural areas indicating the higher impact of global warming ( Raj, Paul, Chakraborty, & Kuttippurath, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

REST framework: A modelling approach towards cooling energy stress mitigation plans for future cities in warming Global South

Bardhan

Debnath

Gama

et al. 2020

Sustainable Cities and Society

View full text Add to dashboard Cite

Highlights Higher cooling energy stress due to future urbanisation in Global South. Urban energy stress modelling using an integrated geo-spatial energy network. Residential decentralised energy system as grid energy stress management strategy. Distributive energy justice through urban planning and peer-to-peer energy sharing.

show abstract

“…In addition, the higher temperatures in the region are also weighted by many cities in the IGP region (e.g. Raj et al, 2020). We have done similar analyses for all seasons, and are shown in Fig.…”

Section: Impact Of Meteorological Factorsmentioning

confidence: 99%

Record high levels of atmospheric ammonia over India: Spatial and temporal analyses

Kuttippurath

Singh

Dash

et al. 2020

Science of The Total Environment

View full text Add to dashboard Cite

Atmospheric ammonia (NH 3) is an alkaline gas and a prominent constituent of the nitrogen cycle that adversely affects ecosystems at higher concentrations. It is a pollutant, which influences all three spheres such as haze formation in the atmosphere, soil acidification in the lithosphere, and eutrophication in water bodies. Atmospheric NH 3 reacts with sulfur (SO x) and nitrogen (NO x) oxides to form aerosols, which eventually affect human health and climate. Here, we present the seasonal and inter-annual variability of atmospheric NH 3 over India in 2008-2016 using the IASI (Infrared Atmospheric Sounding Interferometer) satellite observations. We find that Indo-Gangetic Plains (IGP) is one of the largest and rapidly growing NH 3 hotspots of the world, with a growth rate of +1.2% yr −1 in summer (June-August: Kharif season), due to intense agricultural activities and presence of many fertilizer industries there. However, our analyses show insignificant decreasing trends in annual NH 3 of about −0.8% yr −1 in all India, about −0.4% yr −1 in IGP, and −1.0% yr −1 in the rest of India. Ammonia is positively correlated with total fertilizer consumption (r = 0.75) and temperature (r = 0.5) since high temperature favors volatilization, and is anti-correlated with total precipitation (r = from −0.2, but −0.8 in the Rabi season: October-February) as wet deposition helps removal of atmospheric NH 3. This study, henceforth, suggests the need for better fertilization practices and viable strategies to curb emissions, to alleviate the adverse health effects and negative impacts on the ecosystem in the region. On the other hand, the overall decreasing trend in atmospheric NH 3 over India shows the positive actions, and commitment to the national missions and action plans to reduce atmospheric pollution and changes in climate.

show abstract

Anthropogenic forcing exacerbating the urban heat islands in India

Cited by 73 publications

References 37 publications

Effects of lockdown due to COVID-19 outbreak on air quality and anthropogenic heat in an industrial belt of India

Effects of lockdown due to COVID-19 outbreak on air quality and anthropogenic heat in an industrial belt of India

REST framework: A modelling approach towards cooling energy stress mitigation plans for future cities in warming Global South

Record high levels of atmospheric ammonia over India: Spatial and temporal analyses

Contact Info

Product

Resources

About