Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 17, issue 20
Articles | Volume 17, issue 20
https://doi.org/10.5194/acp-17-12633-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-17-12633-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 17, issue 20
Research article
 | 
24 Oct 2017
Research article |  | 24 Oct 2017

What controls the seasonal cycle of columnar methane observed by GOSAT over different regions in India?

Naveen Chandra, Sachiko Hayashida, Tazu Saeki, and Prabir K. Patra

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Short summary
This study shows difficulties in interpreting columnar dry-air mole fractions of methane (XCH4) for surface emissions of CH4 over the South Asia region, without separating the role of chemistry and transport. Using a chemistry-transport model, we suggest that a link between surface emissions and higher levels of XCH4 is not always valid in this region of complex monsoonal meteorology, although there is often a fair correlation between the seasonal variations in surface emissions and XCH4.
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