Carbon footprint of India’s groundwater irrigation

India has an intricate nexus of groundwater irrigation, energy and climate. Subsidized electricity supply has led to unregulated groundwater pumping, causing a decrease in groundwater level and increase in carbon emissions. This complex nexus necessitates estimation of carbon emissions from groundwa...

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Main Authors: Abhishek Rajan, Kuhelika Ghosh, Ananya Shah
Format: Article
Language:English
Published: Taylor & Francis Group 2020-05-01
Series:Carbon Management
Subjects:
Online Access:http://dx.doi.org/10.1080/17583004.2020.1750265
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author Abhishek Rajan
Kuhelika Ghosh
Ananya Shah
author_facet Abhishek Rajan
Kuhelika Ghosh
Ananya Shah
author_sort Abhishek Rajan
collection DOAJ
description India has an intricate nexus of groundwater irrigation, energy and climate. Subsidized electricity supply has led to unregulated groundwater pumping, causing a decrease in groundwater level and increase in carbon emissions. This complex nexus necessitates estimation of carbon emissions from groundwater irrigation. The study uses actual pumping data on 20.5 million groundwater structures from the Fifth Minor Irrigation Census (reference year 2013–14) to estimate carbon emissions. The estimates show that groundwater irrigation emits 45.3–62.3 MMT of carbon annually, contributing 8–11% of India’s total carbon emission. This analysis shows deep tubewells have a huge carbon footprint, and their growing number is a serious environmental concern. Spatial analysis reveals India’s western and peninsular region, which houses 85% of the country’s over-exploited groundwater blocks, contributes most to carbon emission. Moreover, this region hosts 27 districts which are groundwater–energy–climate nexus hotspots, together accounting for 34% of carbon emissions from groundwater irrigation. Comparison with the previous estimate reveals that carbon emission from groundwater irrigation nearly doubled between 2000 and 2013. Findings of this study are vital to the discourse on the increasing environmental costs of groundwater pumping in the country and will contribute to carbon emission mitigation strategies.
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spelling doaj.art-43b37021d3dc412fa3871c07fa223b862023-09-21T15:09:06ZengTaylor & Francis GroupCarbon Management1758-30041758-30122020-05-0111326528010.1080/17583004.2020.17502651750265Carbon footprint of India’s groundwater irrigationAbhishek Rajan0Kuhelika Ghosh1Ananya Shah2IWMI-Tata Water Policy ProgramIWMI-Tata Water Policy ProgramInternational Water Management Institute, Colombo, Sri LankaIndia has an intricate nexus of groundwater irrigation, energy and climate. Subsidized electricity supply has led to unregulated groundwater pumping, causing a decrease in groundwater level and increase in carbon emissions. This complex nexus necessitates estimation of carbon emissions from groundwater irrigation. The study uses actual pumping data on 20.5 million groundwater structures from the Fifth Minor Irrigation Census (reference year 2013–14) to estimate carbon emissions. The estimates show that groundwater irrigation emits 45.3–62.3 MMT of carbon annually, contributing 8–11% of India’s total carbon emission. This analysis shows deep tubewells have a huge carbon footprint, and their growing number is a serious environmental concern. Spatial analysis reveals India’s western and peninsular region, which houses 85% of the country’s over-exploited groundwater blocks, contributes most to carbon emission. Moreover, this region hosts 27 districts which are groundwater–energy–climate nexus hotspots, together accounting for 34% of carbon emissions from groundwater irrigation. Comparison with the previous estimate reveals that carbon emission from groundwater irrigation nearly doubled between 2000 and 2013. Findings of this study are vital to the discourse on the increasing environmental costs of groundwater pumping in the country and will contribute to carbon emission mitigation strategies.http://dx.doi.org/10.1080/17583004.2020.1750265water–energy–climate nexusghg accountingcarbon emission
spellingShingle Abhishek Rajan
Kuhelika Ghosh
Ananya Shah
Carbon footprint of India’s groundwater irrigation
Carbon Management
water–energy–climate nexus
ghg accounting
carbon emission
title Carbon footprint of India’s groundwater irrigation
title_full Carbon footprint of India’s groundwater irrigation
title_fullStr Carbon footprint of India’s groundwater irrigation
title_full_unstemmed Carbon footprint of India’s groundwater irrigation
title_short Carbon footprint of India’s groundwater irrigation
title_sort carbon footprint of india s groundwater irrigation
topic water–energy–climate nexus
ghg accounting
carbon emission
url http://dx.doi.org/10.1080/17583004.2020.1750265
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