Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Insolation-forced Spin-ups Of Uranus' Zonal Winds In Epic
Authors:
Sussman, Michael; Dowling, T. E.; Chanover, N. J.
Affiliation:
AA(New Mexico State Univ), AB(Comparative Planetology Laboratory, University of Louisville), AC(New Mexico State Univ)
Publication:
American Astronomical Society, DPS meeting #40, #41.07; Bulletin of the American Astronomical Society, Vol. 40, p.470
Publication Date:
09/2008
Origin:
AAS
Bibliographic Code:
2008DPS....40.4107S

Abstract

We present modifications made to the EPIC general climate model to include forcing effects produced by solar insolation patterns with specific application to Uranus. We implemented a gray, latitudinally- and longitudinally-varying radiative forcing term to simulate both the diurnal as well as extreme seasonal fluctuations of solar insolation experienced by Uranus. In keeping with the radiative context of these modifications, we elected to forego EPIC's default Newtonian cooling scheme in favor of implementing a gray radiative cooling term based on H2-H2 collision-induced absorption and subsequent reemission in the mid- and far-infrared. We compare the results of this scheme with measurements of Uranus' temperature-pressure profile made by the Voyager spacecraft.

Additionally, we demonstrate dynamical results of this radiative scheme. We present our initial spin-up experiments from rest of Uranus' zonal and meridional winds with both equinoctial and solstice radiative forcing patterns. We compare our simulated zonal wind results to those derived from both Voyager-era solstice observations as well as recent equinox observations, which may exhibit seasonal change.

This work was funded by the National Science Foundation.

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints