Excitation of O2 atmospheric bands in the aurora

Wallace, L.; Chamberlain, Joseph W.

doi:10.1016/0032-0633(59)90060-1

Cited by 47 publications

(19 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9] Wallace and Chamberlain [1959] have previously reported seeing hot 1-1 band emission but in an aurora. In fact, their analysis, based on the relative strengths of the P-and R-branches, also produced a temperature of 700 K. They deduced that the emission must be ionospheric, from an altitude not less than 150 km.…”

Section: Resultsmentioning

confidence: 99%

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow

2003

View full text Add to dashboard Cite

[1] O 2 (b 1 AE g + À X 3 AE g À ) atmospheric band emission, when viewed from the ground outside the auroral zone, is considered to originate in the 90-100 km altitude region, from O-atom recombination. However, the v = 0,1 levels of the b 1 AE g + state can also be generated through an energy transfer process, when O( 1 D) collides with O 2 . In the absence of specific altitude information, as in ground-based measurements, the two sources can still be distinguished because of different characteristic temperatures. We have analyzed sky spectra from the Keck I and II telescopes on Mauna Kea, contrasting solar minimum and maximum conditions and variations with time of night. Utilizing the O 2 (b-X) 1-1 band, we find that in averaged solar minimum conditions, $75% of the emission comes from an altitude corresponding to 200 K, while $25% has a temperature near 700 K and therefore originates at high altitude. The fraction of high-temperature emission is often considerably greater early in the evening. At solar maximum, the high altitude component can be dramatically enhanced in the early evening; emission in the 1-1 band reaches intensitities of 100-150 R, with a rotational temperature near 1000 K. We also observe high-J b-X 0-0 band lines penetrating the Fraunhofer A-band region, the normal absorption becoming emission. Emission intensites deduced from such observations indicate that the ionospheric 0-0 band is at least as intense as the 1-1 band, as expected.

show abstract

Section: Resultsmentioning

confidence: 99%

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow

2003

View full text Add to dashboard Cite

show abstract

“…In fact, their chemical and photochemical behavior is a nodal point in oxygenÕs activity, for example in many atmospheric phenomena of widespread interest like ozone equilibria [1,2], day [3] -and night [4] -light, aurorae [5], etc.…”

Section: Introductionmentioning

confidence: 99%

Line-strength of the 1.27-μm atmospheric transition of oxygen

Stefano

2006

Chemical Physics

View full text Add to dashboard Cite

“…Radiative decay from b 1 + g to the ground state, X 3 − g , results in Atmospheric band emission, which is an important component of the terrestrial dayglow, 1-3 nightglow, [4][5][6] and the aurora. 7,8 Recent observations of the Atmospheric band emission from the International Space Station have been used to determine altitude profiles of the temperature in the lower thermosphere. 9,10 Detailed knowledge of the relevant production and removal processes of O 2 (b 1 + g ) by atmospheric colliders is essential for modeling and correctly interpreting the altitude profiles of the Atmospheric band emission.…”

Section: Introductionmentioning

confidence: 99%

O2($b^1 \Sigma _g^ +$b1Σg+, υ = 0, 1) relative yields in O(1D) + O2 energy transfer

Pejaković

Copeland

Slanger

et al. 2014

The Journal of Chemical Physics

View full text Add to dashboard Cite

Energy transfer from O((1)D) to O2 is the main source of O2(b(1)Σ(+)(g) in vibrational levels υ = 0 and 1 in the Earth's thermosphere. Knowledge of the relative yields for O2(b(1)Σ(+)(g) production in υ = 0 and 1 is essential for a reliable interpretation and modeling of the O2 atmospheric band emissions (b(1)Σ(+)(g) - X (3)Σ(-)(g) from these two vibrational levels. We report laboratory measurements of the relative yields at room temperature. In the experiments, O2(b(1)Σ(+)(g), υ = 0, 1) is generated by O((1)D) + O2 collisions following partial photodissociation of O2 at 157.6 nm. O2(b(1)Σ(+)(g), υ = 0, 1) emission detection is used to monitor the temporal evolution of the vibrational level populations. The measured fractional yield for υ = 1 is 0.8 ± 0.1, in contrast with the results of previous studies that indicated dominant O2(b(1)Σ(+)(g), υ = 0) production. A revision is warranted of the values used for these relative yields in atmospheric models.

show abstract

Excitation of O2 atmospheric bands in the aurora

Cited by 47 publications

References 15 publications

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow

Line-strength of the 1.27-μm atmospheric transition of oxygen

O2($b^1 \Sigma _g^ +$b1Σg+, υ = 0, 1) relative yields in O(1D) + O2 energy transfer

Contact Info

Product

Resources

About

Excitation of O2 atmospheric bands in the aurora

Cited by 47 publications

References 15 publications

Ground‐based observation of high‐altitude, high‐temperature emission in the O2 atmospheric band nightglow

Ground‐based observation of high‐altitude, high‐temperature emission in the O2 atmospheric band nightglow

Line-strength of the 1.27-μm atmospheric transition of oxygen

O2($b^1 \Sigma _g^ +$b1Σg+, υ = 0, 1) relative yields in O(1D) + O2 energy transfer

Contact Info

Product

Resources

About

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow

Ground‐based observation of high‐altitude, high‐temperature emission in the O₂ atmospheric band nightglow