Reductions in India's crop yield due to ozone

TitleReductions in India's crop yield due to ozone
Publication TypeJournal Article
Year of Publication2014
AuthorsGhude SD, Jena C, Chate D.M, Beig G., Pfister G.G, Kumar R, Ramanathan V
JournalGeophysical Research Letters
Date Published2014/08
ISBN Number1944-8007
Keywords0345 Pollution: urban and regional; 0365 Troposphere: composition and chemistry; 3355 Regional modeling; crop loss; surface ozone; WRF-Chem

This bottom-up modeling study, supported by emission inventories and crop production, simulates ozone on local to regional scales. It quantifies, for the first time, potential impact of ozone on district-wise cotton, soybeans, rice, and wheat crops in India for the first decade of the 21st century. Wheat is the most impacted crop with losses of 3.5 ± 0.8 million tons (Mt), followed by rice at 2.1 ± 0.8 Mt, with the losses concentrated in central and north India. On the national scale, this loss is about 9.2% of the cereals required every year (61.2 Mt) under the provision of the recently implemented National Food Security Bill (in 2013) by the Government of India. The nationally aggregated yield loss is sufficient to feed about 94 million people living below poverty line in India.

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