Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/20.500.11765/1606
Growth rate, seasonal, synoptic, diurnal variations and budget of methane in the lower atmosphere
Título : Growth rate, seasonal, synoptic, diurnal variations and budget of methane in the lower atmosphere
Autor : Patra, Prabir K.; Takigawa, Masayuki; Ishijima, Kentaro; Choi, Byoung-Choel; Cunnold, Derek; Dlugokencky, Edward J.; Fraser, Paul; Gómez Peláez, Ángel Jesús; Goo, Tae-Young; Kim, Jeong-Sik; Krummel, Paul B.; Langenfelds, Ray L.; Meinhardt, Frank; Mukai, Hitoshi; O’Doherty, Simon; Prinn, Ronald G.; Simmonds, Peter; Steele, Paul; Tohjima, Yasunori; Tsuboi, Kazuhiro; Uhse, Karin; Weiss, Ray F.; Worthy, Douglas E.; Nakazawa, Takakiyo
Palabras clave : Atmospheric general circulation model; Chemistry transport model; Methane; Model simulation
Fecha de publicación : 2009
Editor: Meteorological Society of Japan
Citación : Journal of the Meteorological Society of Japan. 2009, 87(4), p. 635-663
Versión del editor: https://dx.doi.org/10.2151/jmsj.87.635
Resumen : We have used an AGCM (atmospheric general circulation model)-based Chemistry Transport Model (ACTM) for the simulation of methane (CH4) in the height range of earth’s surface to about 90 km. The model simulations are compared with measurements at hourly, daily, monthly and interannual time scales by filtering or averaging all the timeseries appropriately. From this model-observation comparison, we conclude that the recent (1990–2006) trends in growth rate and seasonal cycle at most measurement sites can be fairly successfully modeled by using existing knowledge of CH4 flux trends and seasonality. A large part of the interannual variability (IAV) in CH4 growth rate is apparently controlled by IAV in atmospheric dynamics at the tropical sites and forest fires in the high latitude sites. The flux amplitudes are optimized with respect to the available hydroxyl radical (OH) distribution and model transport for successful reproduction of latitudinal and longitudinal distribution of observed CH4 mixing ratio at the earth’s surface.
URI : http://hdl.handle.net/20.500.11765/1606
ISSN : 0026-1165
2186-9057
Colecciones: Artículos científicos 2005-2009


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