Titan's aerosol and stratospheric ice opacities between 18 and 500 μm: Vertical and spectral characteristics from Cassini CIRS

► Titan's aerosol spectrum (500 to 18 μm) does not change chemical composition between 15°N and 58°S. ► The aerosol has an emission feature at 140 cm−1, perhaps due to PAHs or nitrogenated aromatics. ► Strong evidence that stratospheric clouds composed of condensed trace organics extend globally. ► The broad stratospheric ice feature at ∼160 cm−1 is most likely blended HCN and HC3N ices. ► The broad stratospheric ice feature derived near 80 cm−1 may be due to crystalline C2H6.