SO2 (IT)
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Rewriting SO2 retrieval, incoporating new version of RTTOV and new ECMWF data.
CH4 (LV)
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Looking at IMS CH4 data for Methane Plus project.
Plot of methane trend v latitude 2009-2017. Some positive anomalies since 2015,
possibly associated with spectral interference from Volcanic activity? But might
also be present in TCCON.