Insolation in Titan's troposphere

Juan M. Lora, Paul J. Goodman, Joellen L. Russell, Jonathan I. Lunine

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Seasonality in Titan's troposphere is driven by latitudinally varying insolation. We show that the latitudinal distributions of insolation in the troposphere and at the surface, based on Huygens DISR measurements, can be approximated analytically with nonzero extinction optical depths τ, and are not equivalent to that at the top of the atmosphere (τ= 0), as has been assumed previously. This has implications for the temperature distribution and the circulation, which we explore with a simple box model. The surface temperature maximum and the upwelling arm of thermally-direct meridional circulation reach the midlatitudes, not the poles, during summertime.

Original languageEnglish (US)
Pages (from-to)116-119
Number of pages4
JournalIcarus
Volume216
Issue number1
DOIs
StatePublished - Nov 1 2011

Keywords

  • Radiative transfer
  • Titan

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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