Monthly Global Map of the CH4 column-averaged volume mixing ratios in 2.5 deg by 2.5 deg mesh(Bias-corrected FTS SWIR L2 XCH4) (V03.05)

The range of color scale in this XCH4 map is from 1.60 ppm to 2.05 ppm.
It was changed from its previous version.
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Jan. 2010
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Jan. 2011
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Jan. 2016
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Jan. 2024
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Feb. 2010
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Fab. 2024
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Mar. 2010
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Apr. 2009
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May 2009
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Jun. 2009
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Jul. 2009
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Aug. 2009
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Sep. 2009
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Oct. 2009
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Nov. 2009
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Dec. 2009
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Note)  In the processing of each column data (standard product), Numerical Weather Prediction Model GPV Data provided by Japan Meteorological Agency is used.
Note)  The CH4 column-averaged volume mixing ratio is the ratio of the total amount of CH4 to the total amount of dry air contained in a vertical column from ground surface to the top of the atmosphere. The CH4 column-averaged volume mixing ratio is designated XCH4.
Note)  Monthly Global Map in this page is generated using the bias-corrected FTS SWIR L2 CH4 product (V03.05).
Note)  Date in blue indicates FTS SWIR L2 XCH4 data insufficiency during the month.