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Global temperature change potential of nitrogen use in agriculture: A 50-year assessment

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Title Global temperature change potential of nitrogen use in agriculture: A 50-year assessment
 
Creator R. K. Fagodiya, H. Pathak, A. Kumar, A. Bhatia & N. Jain
 
Subject Nitrogen use in Agriculture, Global Temperature Change Potential, Nitrous oxide emission
 
Description Nitrogen (N) use in agriculture substantially alters global N cycle with the short- and long-term effects
on global warming and climate change. It increases emission of nitrous oxide, which contributes 6.2%,
while carbon dioxide and methane contribute 76% and 16%, respectively of the global warming.
However, N causes cooling due to emission of NOx, which alters concentrations of tropospheric ozone
and methane. NOx and NH3 also form aerosols with considerable cooling effects. We studied global
temperature change potential (GTP) of N use in agriculture. The GTP due to N2O was 396.67 and
1168.32 Tg CO2e on a 20-year (GTP20) and 439.94 and 1295.78 Tg CO2e on 100-year scale (GTP100) during
years 1961 and 2010, respectively. Cooling effects due to N use were 92.14 and 271.39 Tg CO2e (GTP20)
and 15.21 and 44.80 Tg CO2e (GTP100) during 1961 and 2010, respectively. Net GTP20 was 369.44 and
1088.15 Tg CO2e and net GTP100 was 429.17 and 1264.06 Tg CO2e during 1961 and 2010, respectively.
Thus net GTP20 is lower by 6.9% and GTP100 by 2.4% compared to the GTP considering N2O emission
alone. The study shows that both warming and cooling effects should be considered to estimate the
GTP of N use.
 
Date 2018-09-10T10:14:05Z
2018-09-10T10:14:05Z
2017
 
Type Research Paper
 
Identifier Fagodiya, R. K., Pathak, H., Kumar, A., Bhatia, A., & Jain, N. (2017). Global temperature change potential of nitrogen use in agriculture: A 50-year assessment. Scientific Reports, 7, 44928.
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http://krishi.icar.gov.in/jspui/handle/123456789/6655
 
Language English
 
Publisher Nature publishing group