Non-LTE Modeling of the Stratosphere of Jupiter

Zhang, X., West, R. A., Shia, R. L., Yelle, R. V., Nixon, C. A., Orton, G. S., and

Yung Y. L.

AGU 2011

Why NON-LTE

López-Puertas & Taylor (2001)

C2H2C2H6

CIRS data (Nixon et al., 2007)

Model Atmosphere

Model Atmosphere

CH4 T

Nixon et al. (2007) Yelle (2001)

2D cooling spatial

Spectral Cooling Rate (in LOG10) H2-H2&H2-He C2H2-C2H6 CH4 Units: (erg/g/s/cm-1) 10μm ~5μm

Source Functions

CH4 C2H6

C2H2

H2-H2&H2-He

C2H2-C2H6

CH4 Total

Non-LTE Cooling Rate

Non-LTE C2H2-C2H6 SpectraLTE High Collision Low Collision

Non-LTE CH4 SpectraLTE High Collision Low Collision

Heating Rate

LTE Cooling

NLTE

Heating

Aerosol 3.3

1.1

7.7

1.3 1.7

2.3

Low Collision Case: T sensitivity

Low Collision Case: T sensitivityCIRS Test Seiff (1998)

Low Collision Case: T sensitivityCIRS Test Seiff (1998)

Other Heating Mechanisms?

Aerosol Heating at 3.4 micron NIR band?

Bellucci et al. (2009)

Gravity Wave Dissipation?

Young et al. (2005)

Ave Heat/cool compare

• Slope• Thermosphere compare