Upper Limit for NH 3in the Stratosphere of Jupiter 16 and 21 Weeks after the SL9 Collision

Pedro V. Sada, Donald E. Jennings, George H. McCabe, Gordon L. Bjoraker, Drake Deming

Resultado de la investigación

1 Cita (Scopus)

Resumen

Spectroscopic observations of Jupiter at thermal-infrared wavelengths were performed on November 8-9 and December 14, 1994, 16 and 21 weeks after the fragments of comet Shoemaker-Levy 9 collided with Jupiter. Residual stratospheric ammonia was searched for in emission at 930.76 cm-1over the longitudes corresponding to the remnants of the D/G/R/S impact sites. We believe a small amount of ammonia may have been detected in November, but report an upper limit for both dates. The constant volume mixing ratio for pressure levels less than 10 mbar that best fits the observation on November 8 is no more than 3.6 ± 2.4 × 10-10. This upper limit decreased to ≤2.3 ± 3.0 × 10-10on December 14. These values are equivalent to upper limits of 1.9 ± 1.2 × 10-10on November 8 and ≤1.2 ± 1.5 × 10-10on December 14 if we adopt a constant volume mixing ratio above a base at 100 mbar. We also searched, without success, for stratospheric ammonia on November 9 over the K/W and L impact site remnants. Our upper limits place stronger constraints on the stratospheric ammonia lifetimes and photochemical depletion models.
Idioma originalEnglish
Páginas (desde-hasta)49-56
PublicaciónIcarus
Volumen130
N.º1
DOI
EstadoPublished - 1 nov 1997
Publicado de forma externa

Huella dactilar

stratosphere
Jupiter (planet)
Jupiter
ammonia
collision
collisions
mixing ratios
mixing ratio
Shoemaker-Levy 9 comet
comet
fragments
life (durability)

Citar esto

Sada, Pedro V. ; Jennings, Donald E. ; McCabe, George H. ; Bjoraker, Gordon L. ; Deming, Drake. / Upper Limit for NH 3in the Stratosphere of Jupiter 16 and 21 Weeks after the SL9 Collision. En: Icarus. 1997 ; Vol. 130, N.º 1. pp. 49-56.
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abstract = "Spectroscopic observations of Jupiter at thermal-infrared wavelengths were performed on November 8-9 and December 14, 1994, 16 and 21 weeks after the fragments of comet Shoemaker-Levy 9 collided with Jupiter. Residual stratospheric ammonia was searched for in emission at 930.76 cm-1over the longitudes corresponding to the remnants of the D/G/R/S impact sites. We believe a small amount of ammonia may have been detected in November, but report an upper limit for both dates. The constant volume mixing ratio for pressure levels less than 10 mbar that best fits the observation on November 8 is no more than 3.6 ± 2.4 × 10-10. This upper limit decreased to ≤2.3 ± 3.0 × 10-10on December 14. These values are equivalent to upper limits of 1.9 ± 1.2 × 10-10on November 8 and ≤1.2 ± 1.5 × 10-10on December 14 if we adopt a constant volume mixing ratio above a base at 100 mbar. We also searched, without success, for stratospheric ammonia on November 9 over the K/W and L impact site remnants. Our upper limits place stronger constraints on the stratospheric ammonia lifetimes and photochemical depletion models.",
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Upper Limit for NH 3in the Stratosphere of Jupiter 16 and 21 Weeks after the SL9 Collision. / Sada, Pedro V.; Jennings, Donald E.; McCabe, George H.; Bjoraker, Gordon L.; Deming, Drake.

En: Icarus, Vol. 130, N.º 1, 01.11.1997, p. 49-56.

Resultado de la investigación

TY - JOUR

T1 - Upper Limit for NH 3in the Stratosphere of Jupiter 16 and 21 Weeks after the SL9 Collision

AU - Sada, Pedro V.

AU - Jennings, Donald E.

AU - McCabe, George H.

AU - Bjoraker, Gordon L.

AU - Deming, Drake

PY - 1997/11/1

Y1 - 1997/11/1

N2 - Spectroscopic observations of Jupiter at thermal-infrared wavelengths were performed on November 8-9 and December 14, 1994, 16 and 21 weeks after the fragments of comet Shoemaker-Levy 9 collided with Jupiter. Residual stratospheric ammonia was searched for in emission at 930.76 cm-1over the longitudes corresponding to the remnants of the D/G/R/S impact sites. We believe a small amount of ammonia may have been detected in November, but report an upper limit for both dates. The constant volume mixing ratio for pressure levels less than 10 mbar that best fits the observation on November 8 is no more than 3.6 ± 2.4 × 10-10. This upper limit decreased to ≤2.3 ± 3.0 × 10-10on December 14. These values are equivalent to upper limits of 1.9 ± 1.2 × 10-10on November 8 and ≤1.2 ± 1.5 × 10-10on December 14 if we adopt a constant volume mixing ratio above a base at 100 mbar. We also searched, without success, for stratospheric ammonia on November 9 over the K/W and L impact site remnants. Our upper limits place stronger constraints on the stratospheric ammonia lifetimes and photochemical depletion models.

AB - Spectroscopic observations of Jupiter at thermal-infrared wavelengths were performed on November 8-9 and December 14, 1994, 16 and 21 weeks after the fragments of comet Shoemaker-Levy 9 collided with Jupiter. Residual stratospheric ammonia was searched for in emission at 930.76 cm-1over the longitudes corresponding to the remnants of the D/G/R/S impact sites. We believe a small amount of ammonia may have been detected in November, but report an upper limit for both dates. The constant volume mixing ratio for pressure levels less than 10 mbar that best fits the observation on November 8 is no more than 3.6 ± 2.4 × 10-10. This upper limit decreased to ≤2.3 ± 3.0 × 10-10on December 14. These values are equivalent to upper limits of 1.9 ± 1.2 × 10-10on November 8 and ≤1.2 ± 1.5 × 10-10on December 14 if we adopt a constant volume mixing ratio above a base at 100 mbar. We also searched, without success, for stratospheric ammonia on November 9 over the K/W and L impact site remnants. Our upper limits place stronger constraints on the stratospheric ammonia lifetimes and photochemical depletion models.

U2 - 10.1006/icar.1997.5790

DO - 10.1006/icar.1997.5790

M3 - Article

VL - 130

SP - 49

EP - 56

JO - Icarus

JF - Icarus

SN - 0019-1035

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