Work

Seasonal variation of methane flux from a California rice paddy

Year: 1983

Type: article

Abstract: To allow increased understanding of the global budget of atmospheric methane, individual methane sources require investigation. We have measured methane emissions from a California rice paddy during the entire 1982 growing season. A very strong seasonal dependence was observed. Methane emissions were highest in the last 2–3 weeks before harvest; daily emissions reached 5 g CH4/m2. Over the 100‐day season, daily emissions averaged about 0.25 g CH4/m2, higher than our previously reported values. Attempts to estimate global rice paddy emissions must recognize the possibility of seasonal variations. Soil temperature at 10‐cm depth correlated poorly with our measured fluxes; soil redox potential was a more reliable indicator.

Source: Journal of Geophysical Research Atmospheres

DOI: 10.1029/jc088ic15p11022

Authors: R. J. Cicerone, J. D. Shetter, C. C. Delwiche

Institutions: NSF National Center for Atmospheric Research, University of California, Davis

Language: English

Topic: Atmospheric and Environmental Gas Dynamics

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDGs: Climate action, Zero hunger

Open Access status: bronze

Funders: National Science Foundation, U.S. Department of Agriculture, Agricultural Research Service