Uncertainties in the current knowledge of some atmospheric trace gases associated with U.S. agriculture: A review

Sagar Krupa, Fitzerald Booker, Van Bowersox, Chris Topher Lehmann, David Grantz

Research output: Contribution to journalReview article

Abstract

Approximately 80 different crop species are grown in the United States in widely differing geographic areas, climatic and edaphic conditions, and management practices. Although the majority of cultivated acreage in the United States is planted with only about 10 primary crops, uncertainties associated with trace gas emissions arise from: (1) limited data availability, (2) inaccurate estimates because of large temporal and spatial variability in trace gas composition and magnitude of trace gas emissions from agricultural activities, (3) differing characteristics of pollutant emissions from highly dispersed animal feed-lots, and (4) limited understanding of the emissions of semi-volatile organic compounds (SVOCs) associated with agriculture. Although emission issues are of concern, so also is atmospheric deposition to cropping systems, including wet and dry nitrogen, minerals, and organic compounds. These can have feedback effects on trace gas emissions. Overall, the many gaps in our understanding of these aspects of agricultural systems deserve serious attention.

Original languageEnglish (US)
Pages (from-to)986-993
Number of pages8
JournalJournal of the Air and Waste Management Association
Volume58
Issue number8
DOIs
StatePublished - Aug 2008

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

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