Analysis of seasonal variability of methane over global land area

In this study, we determine the global emission concentration of methane using the scanning imaging absorption spectrometer for atmospheric chartography data. We analyzed land and sea area to investigate the 9-year changes in methane concentrations from 2003 to 2011. Moreover, by subtracting the concentration of methane from land and sea, we can found the methane emission concentration of land. As a result, it is cleared that a big amount of CH4 emission concentration was found not only in the northern Hemisphere paddy fields but also in the southern Hemisphere broadleaf evergreen areas (central Africa and south America). We also found that the global land CH4 growth rate is 3–5 ppb/year during 9 years.

[1]  Z. H I-P I N G W A N G,et al.  Aerobic Methane Emission from Plants in the Inner Mongolia Steppe , 2007 .

[2]  Miguel Ángel Martínez,et al.  Atmospheric oxidation capacity sustained by a tropical forest , 2008, Nature.

[3]  M. Wahlen,et al.  Interannual extremes in the rate of rise of atmospheric carbon dioxide since 1980 , 1995, Nature.

[4]  Kristen Averyt,et al.  Climate change 2007: Synthesis Report. Contribution of Working Group I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Summary for Policymakers. , 2007 .

[5]  E. Dlugokencky,et al.  Airborne measurements indicate large methane emissions from the eastern Amazon basin , 2007 .

[6]  Robert J. Scholes,et al.  The Carbon Cycle and Atmospheric Carbon Dioxide , 2001 .

[7]  Martin Heimann,et al.  Global and hemispheric CO2 sinks deduced from changes in atmospheric O2 concentration , 1996, Nature.

[8]  W. C. Mcroberts,et al.  Methoxyl groups of plant pectin as a precursor of atmospheric methane: evidence from deuterium labelling studies. , 2008, The New phytologist.

[9]  M. Buchwitz,et al.  Comparisons between SCIAMACHY and ground-based FTIR data for total columns of CO, CH 4 , CO 2 and N 2 O , 2005 .

[10]  J. F. Meirink,et al.  Assessing Methane Emissions from Global Space-Borne Observations , 2005, Science.

[11]  J. Lelieveld.  Climate change: A nasty surprise in the greenhouse , 2006, Nature.

[12]  J. Pyle,et al.  The impact of meteorology on the interannual growth rate of atmospheric methane , 2002 .

[13]  J. Houghton,et al.  Climate change 2001 : the scientific basis , 2001 .

[14]  Pieter P. Tans,et al.  Evidence for interannual variability of the carbon cycle from the National Oceanic and Atmospheric Administration/Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network , 1994 .

[15]  P. Crill,et al.  Emission of methane from plants , 2009, Proceedings of the Royal Society B: Biological Sciences.

[16]  R. Francey,et al.  Interannual growth rate variations of atmospheric CO2 and its δ13C, H2, CH4, and CO between 1992 and 1999 linked to biomass burning , 2002 .

[17]  Patrick M. Crill,et al.  A source of methane from upland forests in the Brazilian Amazon , 2006 .

[18]  R. Sepanski,et al.  TRENDS '90: A compendium of data on global change , 1991 .

[19]  F. Keppler,et al.  Methane emissions from terrestrial plants under aerobic conditions , 2006, Nature.

[20]  Peter Bergamaschi,et al.  Tropical methane emissions: A revised view from SCIAMACHY onboard ENVISAT , 2008 .

[21]  S. Aoki,et al.  Temporal and spatial variations of the carbon isotopic ratio of atmospheric carbon dioxide in the western Pacific region , 1997 .