Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations

Details Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dps....33.1921m&link_type=abstract

American Astronomical Society, DPS Meeting #33, #19.21; Bulletin of the American Astronomical Society, Vol. 33, p.1072

Astronomy and Astrophysics

Astronomy

2

Scientific paper

On July 16,17,18 2001, we observed Mars with the IRAM Plateau de Bure Interferometer (PdBI). Observations were obtained in the CO(2--1) and CO(1--0) rotational lines at 230.538 and 115.271 GHz respectively, with a spectral resolution up to 40 kHz. Mars' average angular size was equal to 19\arcsec and the spatial resolution in our CO(2--1) and CO(1--0) maps is about 2.5\arcsec and 5\arcsec, respectively. The observations sampled the period just after Northern Vernal Equinox (Ls ~ 196o). The high spectral resolution will allow us to determine and map Doppler shifts -- especially in the (1--0) line where the signal-to-noise is much higher than in the CO(2--1) line -- and therefore to directly investigate Mars' middle atmosphere (near 50 km) circulation. We already obtained such wind measurements on Mars with the PdBI (Moreno et al 1999, BAAS, 31, 1149), and found a strong retrograde flow for a similar season (Ls ~ 140o), which was at odds with Mars General Circulation Models (GCMs) which rather predict a weak prograde flow for this season. These new measurements will therefore provide additionals constraints to Mars GCMs in the poorly characterized middle--atmosphere. Preliminary wind results will be presented.

Affiliated with

Also associated with

No associations

Rating

Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations 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 Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mars' wind measurements at Equinox : IRAM PdB Interferometric CO observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1237561