Increasing Delhi's Tree Cover Could Lower Heat Stress by 1°C
Raising Delhi’s tree cover from 3 to 11% can lower ‘felt heat’ by 1°C: Report
Hindustan Times
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A report by Artha Global and data.org reveals that raising tree cover in Delhi from 3% to 11% can reduce experienced temperatures by up to 1°C during peak summer. This cooling effect is significantly greater than the warming caused by urbanization, highlighting the importance of urban greening in combating heat stress.
- 01Increasing tree cover from 3% to 11% can lower experienced temperatures by 1°C.
- 02Urbanization raises temperatures by only 0.6°C when built-up area increases from 25% to 55%.
- 03Micro-level heat action plans are recommended to address localized heat issues.
- 04Access to air conditioning correlates with better sleep but widens economic disparities.
- 05A 3°C rise in experienced heat is linked to increased illness and work absenteeism.
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A report titled *Mapping Heat Inequality Across Neighbourhoods in Delhi* by Artha Global and data.org highlights the significant cooling potential of increasing tree cover in Delhi. The study indicates that enhancing tree coverage from 3% to 11% in a one square kilometer area can lower experienced temperatures by 1°C during peak summer conditions. In contrast, urbanization, which increases built-up areas from 25% to 55%, only raises temperatures by about 0.6°C. Neelanjan Sircar, a co-author of the report, emphasized that modest greening is a more effective strategy for reducing heat stress than increasing concrete structures. The report advocates for micro-level heat action plans focusing on ward-level 'hot pockets' and suggests integrating vegetation as essential infrastructure in urban planning. It also reveals that a 3°C increase in experienced heat correlates with a 15% rise in reported illnesses and a 10% increase in work absenteeism. Households with air conditioning report significantly better sleep quality, but only 30% of residents own an AC, exacerbating economic inequalities.
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Enhancing tree cover could significantly reduce heat stress in Delhi, benefiting residents' health and well-being.
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