Other
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30r1093h&link_type=abstract
American Astronomical Society, DPS meeting #30, #41.P11; Bulletin of the American Astronomical Society, Vol. 30, p.1093
Other
2
Scientific paper
Infrared Heterodyne Spectroscopic observations of ro-vibrational emission line spectra of CO_2 on Mars and Venus and of C_2H_6 on Titan have been used to study molecular abundances and atmospheric dynamics to 2 ms(-1) accuracy. Interpretation of these observations were limited by the lack of a beam-integrated radiative transfer algorithm. Typically, a mean viewing angle was assumed in the analysis whereas the spectrometer FOV spans a range in velocity and mean viewing angle weighted by the spectrometer response. However, a beam-integrated spectrum is qualitatively distinct from a single viewing angle spectrum. For example, the 1" FOV on a 3-m telescope is comparable to Titan's disc and the observed beam includes dynamical contributions from all regions of the disc intercepted by the beam. Such differences affect molecular abundance and wind field retrievals. We will discuss analysis software which model beam-integrated observations. The model is characterized by an effective beam response, molecular abundance, and a wind field. It is numerically implemented by dividing the FOV into a grid of elements, calculating the emergent spectrum of each element, and convolving the results into a beam-integrated spectrum representative of the measurements. The application of the the software to dynamical studies of the Titan and Jupiter atmospheres will be discussed. The analysis techniques are general, with potential application to other molecular astrophysical sources.
Buhl David
Espenak Fred
Fast Kelly
Goldstein Jeffrey Jay
Hewagama Tilak
No associations
LandOfFree
Spectral Line Analysis for Planetary Atmospheric Dynamics Retrieval does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spectral Line Analysis for Planetary Atmospheric Dynamics Retrieval, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Line Analysis for Planetary Atmospheric Dynamics Retrieval will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-814052