GWP: Updated Metric Emission For Dairy - May 2023

GWP: Updated Metric Emission For Dairy

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By Samuel Ansah

Last Updated December 16, 2022

Over the last several decades, the dairy sector in the United States has made significant progress in lowering greenhouse gas emissions. However, in order to comprehend the emissions produced by dairy and work toward lowering emissions by 30 percent by 2030 and zero by 2050, it is critical to understand how to precisely assess methane produced by cattle. According to a recent research, the dairy sector in the United States should strive for climate neutrality rather than net-zero GHG emissions.

A new study published in the Journal of Dairy Science highlights the disparities between the metric GWP100 — a defined criterion for measuring greenhouse gases — and GWP. While the GWP100 has been used to influence global warming policies and legislation, the new measure GWP addresses the actual emissions contributions produced by cow herds. GWP, developed by the University of Oxford, takes into account the 10-year Biogenic Carbon Cycle, in which methane is eliminated as it is added. Carbon dioxide and nitrous oxide, unlike methane, stay in the earth’s atmosphere for 1000 and 100 years, respectively.

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