Negative ions in the auroral mesosphere during a PCA event around sunset

Details Negative ions in the auroral mesosphere during a PCA event around sunset Negative ions in the auroral mesosphere during a PCA event around sunset

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999angeo..17..782d&link_type=abstract

Annales Geophysicae, vol. 17, Issue 6, pp.782-793

Physics

4

Scientific paper

This is a study of the negative ion chemistry in the mesosphere above Tromsø using a number of EISCAT observations of high energy proton precipitation events during the last solar maximum, and in particular around sunset on 23 October, 1989. In these conditions it is possible to look at the relative importance of the various photodetachment and photodissociation processes controlling the concentration of negative ions. The data analysed are from several UHF GEN11 determinations of the ion-plasma ACF together with the pseudo zero-lag estimate of the `raw' electron density, at heights between 55 km and 85 km, at less than 1 km resolution. The power profiles from the UHF are combined with the 55-ion Sodankylä model to obtain consistent estimates of the electron density, the negative ion concentrations, and the average ion mass with height. The neutral concentrations and ion temperature are given by the MSIS90 model. These parameters are then used to compare the calculated widths of the ion-line with the GEN11 determinations. The ion-line spectrum gives information on the effects of negative ions below 70 km where they are dominant; the spectral width is almost a direct measure of the relative abundance of negative ions.

Affiliated with

Also associated with

No associations

Rating

Negative ions in the auroral mesosphere during a PCA event around sunset 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 Negative ions in the auroral mesosphere during a PCA event around sunset, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Negative ions in the auroral mesosphere during a PCA event around sunset will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1497630