The summer intensity variations of [OI] 6300 A in the tropics

Barbier, D.; Roach, F. E.; Steiger, Walter R.

doi:10.6028/jres.066d.017

Cited by 10 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the calculated I 630 spread widely for the same N m F 2 values. This is consistent with the results shown in previous studies [ Barbier et al , ; Sojka et al , ].…”

Section: Discussionsupporting

confidence: 94%

“…The F region nighttime airglow (or nightglow) had been studied for decades even before detailed polar patch studies were initiated [e.g., Peterson et al , ; Hays et al , , and references therein]. Barbier et al [] showed, empirically, that the brightness of 630.0 nm airglow is proportional to ( f o F 2 ) 2 × exp[−( h ′ F 2 −200)/41.3], where f o F 2 is the critical frequency of the F 2 layer and h ′ F 2 is the virtual height of the F 2 layer. As ( f o F 2 ) 2 is directly proportional to the peak electron density of the F 2 layer, the above expression means that the brightness is proportional to the F 2 layer density and negatively correlated to the F 2 layer altitude.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Storm time enhancements of 630.0 nm airglow associated with polar cap patches

et al. 2014

View full text Add to dashboard Cite

We examined the brightness of 630.0 nm airglow, I630, associated with polar cap patches observed during a magnetic storm that occurred on 22 January 2012. Brightness was measured using an all‐sky imager (ASI) located at Longyearbyen, Svalbard. The observed I630 was compared with the F region electron density observed by the European Incoherent Scatter Svalbard Radar (ESR). The I630 was positively correlated with the F2 layer peak electron density, NmF2, and inversely correlated with the altitude of the F2layer peak electron density, hmF2, as expected from the known relationship between these parameters. To estimate the altitude of the peak emission of the airglow, we performed model calculations of the volume emission rate, V630, under quiet and disturbed conditions, using Mass Spectrometer Incoherent Scatter modeled neutral gas profiles and the electron density profile obtained from the ESR data. In order to validate the V630 calculation, I630 was calculated by integrating the V630 along altitude and then compared with the ASI‐observed I630. During the observation periods the measured brightness frequently exceeded the calculated I630; we infer that in most cases, low‐energy particle precipitation is responsible for the extra brightness. However, when there was less particle precipitation, the observed values were in good agreement with the calculated values. Under the magnetically disturbed conditions during our observations, the model calculation showed that the altitude of V630 peak increases, the thickness of the emission layer increases, and patch brightness increases.

show abstract

“…As a result, the calculated I 630 spread widely for the same N m F 2 values. This is consistent with the results shown in previous studies [ Barbier et al , ; Sojka et al , ].…”

Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Storm time enhancements of 630.0 nm airglow associated with polar cap patches

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The essential validity of the theory is confirmed by the good correlation between the observed and computed intensities of the 6300 A emission [cf. Barbier, 1959;Barbier et al, 1962].…”

Section: Introductionmentioning

confidence: 99%

F-region nightglow emissions of atomic oxygen: 1. Theory

Peterson¹,

Vanzandt²,

Norton³

1966

J. Geophys. Res.

View full text Add to dashboard Cite

The theory of the normal 6300 A [O I] nightglow, as previously given by other authors, is refined and generalized to include the other F‐region nightglow oxygen emissions. The assumptions made in both this refined theory and in the earlier ones are examined critically. The height variations of the emission profiles are then discussed and various approximate expressions, appropriate to different height ranges, are developed. A generalized justification is presented for assuming quasi‐equilibrium in the pertinent continuity equations.

show abstract

“…Only a few examples of sky maps representing red airglow in the tropics have been published. The work most relevant to the present investigation is that of Barbier et al [1962]. This paper included sky maps depicting 6300 A airglow for four nights during June 1961 at Maul (approximately geomagnetically conjugate to Townsville).…”

mentioning

confidence: 99%

Seasonal variation of the [O I] 6300 a airglow at Townsville from isophote sky maps

Carman¹,

Gibson-Wilde²

1964

J. Geophys. Res.

View full text Add to dashboard Cite

Sky maps of red airglow at Townsville show a progressive development of an after mid‐night anomaly from quiescent winter conditions to early summer. The enhancement is most prominent in the northern sky. Comparison is made with similar experiments carried out by other workers at an approximately conjugate station at Maui. The observations are discussed in terms of ionospheric parameters h′ƒ and ƒoF2 indicating the influence of ionospheric tilts and electron density on the results. Electron density appears to have a definite influence.

show abstract

The summer intensity variations of [OI] 6300 A in the tropics

Cited by 10 publications

References 1 publication

Storm time enhancements of 630.0 nm airglow associated with polar cap patches

Storm time enhancements of 630.0 nm airglow associated with polar cap patches

F-region nightglow emissions of atomic oxygen: 1. Theory

Seasonal variation of the [O I] 6300 a airglow at Townsville from isophote sky maps

Contact Info

Product

Resources

About