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. Author manuscript; available in PMC: 2019 Mar 4.

Published in final edited form as: Icarus. 2018 Feb 10;307:124–145. doi: 10.1016/j.icarus.2018.02.004

Figure 5: — Mixing ratio profiles for key hydrocarbons (as labeled) on Neptune as a function of season for 3°N planetocentric latitude (Top), 45° planetocentric latitude (Middle), and 81° planetocentric latitude (Bottom). Seasons are shown every 30° in L_s. Data points are from various published observations (global average or low latitude, acquired during L_s = 230–300°) (Caldwell et al., 1988; Bézard et al., 1991; Bishop et al., 1992; Orton et al., 1992; Kostiuk et al., 1992; Yelle et al., 1993; Bézard et al., 1998; Schulz et al., 1999; Meadows et al., 2008; Fletcher et al., 2010; Greathouse et al., 2011; Lellouch et al., 2015), and unpublished Infrared Space Observatory hydrocarbon observations (Bruno Bézard, personal communication, 2001).

Figure 5: — Mixing ratio profiles for key hydrocarbons (as labeled) on Neptune as a function of season for 3°N planetocentric latitude (Top), 45° planetocentric latitude (Middle), and 81° planetocentric latitude (Bottom). Seasons are shown every 30° in L_s. Data points are from various published observations (global average or low latitude, acquired during L_s = 230–300°) (Caldwell et al., 1988; Bézard et al., 1991; Bishop et al., 1992; Orton et al., 1992; Kostiuk et al., 1992; Yelle et al., 1993; Bézard et al., 1998; Schulz et al., 1999; Meadows et al., 2008; Fletcher et al., 2010; Greathouse et al., 2011; Lellouch et al., 2015), and unpublished Infrared Space Observatory hydrocarbon observations (Bruno Bézard, personal communication, 2001).