Newly Relevant Questions

• What is the wind regime that produces longitudinal dunes on Titan?

• Are the dunes confined to equatorial regions due to climate or wind circulation?

• What precisely is the sand that makes up the dunes composed of? Is the composition uniform across the globe, or is it regionally variable?

• How are sand-sized particles formed, and maintained? Is the computed particle size correct?

• Are Titan's dunes active today? If so, how can they stay active given continuous drizzle (Tokano et al., Adamkovics et al.)?

• Why don't the dunes penetrate into Xanadu?

• What causes variations in sand coverage and dune height?

• Are there particle sources and sinks?

• What science could a lander in the dunes do?

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