Ground-based mesospheric temperatures at mid-latitude derived from O2 and OH airglow SATI data: Comparison with SABER measurements

López-González, M. J.; García‐Comas, M.; Rodríguez‐López, C.; López‐Puertas, M.; Shepherd, M. G.; Shepherd, G. G.; Sargoytchev, S.; Aushev, V. M.; Smith, S. M.; Mlynczak, Martin G.; Russell, James M.; Brown, Stephen; Cho, Y.-M.; Wiens, R. H.

doi:10.1016/j.jastp.2007.07.004

Cited by 36 publications

(23 citation statements)

References 39 publications

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“…The ground-based temperatures were 4-5 K higher than SABER values, similar to earlier reports (von Savigny et al, 2004;Oberheide et al, 2006;Scheer et al, 2006;López-González et al, 2007;Mulligan and Lowe, 2008). As T OH derived from Meinel band line intensities strongly depend on the choice of transition probabilities (French et al, 2000), T OH were also derived using the transition probabilities given by Mies (1974), Turnbull and Lowe (1989) and Goldman (1998); however, the mean difference between T OH and SABER measurements increased from 3 to 15 K with their use.…”

Section: Resultssupporting

confidence: 90%

“…In each plot, the temperature measurements are shown by solid curves, while the broken curve symbolizes the OH 2.0 µVER over FWHM. Oberheide et al, 2006;López-González et al, 2007;Mulligan and Lowe, 2008), OH ground-based temperatures are found to be warmer than SABER measurements by 4-5 K on average in this present study. This study also indicates that the difference between two measurements is large (8 K or more) in cases when OH layer lay in the vicinity of large temperature inversions.…”

Section: Discussionsupporting

confidence: 42%

“…As hydroxyl emissions emanate from an extended altitude regime of ∼ 8-10 km width centred around 87 km (Baker et al, 2007;Nikoukar et al, 2007), an approach concerned with OH-equivalent temperature from the SABER kinetic temperature profiles was adopted by several investigators for fair comparison of ground-based and SABER measurements (Oberheide et al, 2006;López-González et al, 2007; Mulli- gan and Lowe, 2008;French and Mulligan, 2010). This concept is discussed in detail by French and Mulligan (2010).…”

Section: Oh-equivalent Temperatures From Saber Kinetic Temperature Prmentioning

confidence: 99%

“…Using the mesopause region temperature measurements by the CRISTA-1 and CRISTA-2 missions, Scheer et al (2006) performed such a comparison of groundbased OH temperature measurements at eight sites (spread over 38-63 • N and 32-69 • S). López-González et al (2007) reported the measurements of OH (6, 2) Meinel band and O 2 (0, 1) atmospheric band temperatures with Spectral Airglow Temperature Imager (SATI) at the Sierra Nevada Observatory (37 • N) and their comparison with SABER observations. These authors noted (i) a similar night-to-night as well as seasonal variation of the temperatures from the two datasets, (ii) SABER temperatures to be colder than SATI measurements by ∼ 5.7 K at 87 km and (iii) SATI temperatures to be colder than SABER measurements by ∼ 2.5 K at 95 km.…”

Section: Introductionmentioning

confidence: 99%

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A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

2017

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Abstract. Ground-based observations of OH (6, 2) Meinel band nightglow were carried out at Ranchi (23.3 • N, 85.3 • E), India, during January-March 2011, December 2011-May 2012 and December 2012-March 2013 using an all-sky imaging system. Near the mesopause, OH temperatures were derived from the OH (6, 2) Meinel band intensity information. A limited comparison of OH temperatures (T OH ) with SABER/TIMED measurements in 30 cases was performed by defining almost coincident criterion of ±1.5 • latitude-longitude and ±3 min of the ground-based observations. Using SABER OH 1.6 and 2.0 µm volume emission rate profiles as the weighing function, two sets of OHequivalent temperature (T 1.6 and T 2.0 respectively) were estimated from its kinetic temperature profile for comparison with OH nightglow measurements. Overall, fair agreement existed between ground-based and SABER measurements in the majority of events within the limits of experimental errors. Overall, the mean value of OH-derived temperatures and SABER OH-equivalent temperatures were 197.3 ± 4.6, 192.0 ± 10.8 and 192.7 ± 10.3 K, and the ground-based temperatures were 4-5 K warmer than SABER values. A difference of 8 K or more is noted between two measurements when the peak of the OH emission layer lies in the vicinity of large temperature inversions. A comparison of OH temperatures derived using different sets of Einstein transition probabilities and SABER measurements was also performed; however, OH temperatures derived using Langhoff et al. (1986) transition probabilities were found to compare well.

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Section: Resultssupporting

confidence: 90%

Section: Discussionsupporting

confidence: 42%

Section: Oh-equivalent Temperatures From Saber Kinetic Temperature Prmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

2017

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“…She and Lowe, 1998;Bittner et al, 2002;López-González et al, 2007). Similar studies in the Southern Hemisphere are rarer (e.g.…”

Section: Temperaturesmentioning

confidence: 94%

Seasonal MLT-region nightglow intensities, temperatures, and emission heights at a Southern Hemisphere midlatitude site

Spargo¹,

Woithe²,

Klekociuk³

et al. 2017

Ann. Geophys.

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Abstract. We consider 5 years of spectrometer measurements of OH(6-2) and O 2 (0-1) airglow emission intensities and temperatures made near Adelaide, Australia (35 • S, 138 • E), between September 2001 and August 2006 and compare them with measurements of the same parameters from at the same site using an airglow imager, with the intensities of the OH(8-3) and O( 1 S) emissions made with a filter photometer, and with 2 years of Aura MLS (Microwave Limb Sounder) v3.3 temperatures and 4.5 years of TIMED SABER (Thermosphere Ionosphere Mesosphere Energetics and Dynamics Sounding of the Atmosphere using Broadband Emission Radiometry) v2.0 temperatures for the same site. We also consider whether we can recover the actual emission heights from the intercomparison of the ground-based and satellite observations. We find a significant improvement in the correlation between the spectrometer OH and SABER temperatures by interpolating the latter to constant density surfaces determined using a meteor radar.

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Comparison of rotational temperature derived from ground‐based OH airglow observations with TIMED/SABER to evaluate the Einstein coefficients

Liu

Smith

et al. 2015

JGR Space Physics

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Ground‐based observations of the OH(9–4, 8–3, 6–2, 5–1, and 3–0) band airglows over Xinglong, China (40°24′N, 117°35′E) from December 2011 to 2014 are used to calculate rotational temperatures. The temperatures are calculated using five commonly used Einstein coefficient data sets. The kinetic temperature from Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics/Sounding the Atmosphere by Broadband Emission of Radiation (SABER) is completely independent of the OH rotational temperature. SABER temperatures are weighted vertically by weighting functions calculated for each emitting vibrational state from two SABER OH volume emission rate profiles. By comparing the ground‐based OH rotational temperature with SABER's, five Einstein coefficient data sets are evaluated. The results show that temporal variations of the rotational temperatures are well correlated with SABER's; the linear correlation coefficients are higher than 0.72, but the slopes of the fit between the SABER and rotational temperatures are not equal to 1. The rotational temperatures calculated using each set of Einstein coefficients produce a different bias with respect to SABER; these are evaluated over each of the vibrational levels to assess the best match. It is concluded that rotational temperatures determined using any of the available Einstein coefficient data sets have systematic errors. However, of the five sets of coefficients, the rotational temperature derived with Langhoff et al.'s (1986) set is most consistent with SABER. In order to get a set of optimal Einstein coefficients for rotational temperature derivation, we derive their ratios from ground‐based OH spectra and SABER temperatures statistically using 3 years of data. The use of a standard set of Einstein coefficients will be beneficial for comparing rotational temperatures observed at different sites.

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Ground-based mesospheric temperatures at mid-latitude derived from O2 and OH airglow SATI data: Comparison with SABER measurements

Cited by 36 publications

References 39 publications

A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

Seasonal MLT-region nightglow intensities, temperatures, and emission heights at a Southern Hemisphere midlatitude site

Comparison of rotational temperature derived from ground‐based OH airglow observations with TIMED/SABER to evaluate the Einstein coefficients

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Ground-based mesospheric temperatures at mid-latitude derived from O2 and OH airglow SATI data: Comparison with SABER measurements

Cited by 36 publications

References 39 publications

A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

Seasonal MLT-region nightglow intensities, temperatures, and emission heights at a Southern Hemisphere midlatitude site

Comparison of rotational temperature derived from ground‐based OH airglow observations with TIMED/SABER to evaluate the Einstein coefficients

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A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India

A comparison of ground-based hydroxyl airglow temperatures with SABER/TIMED measurements over 23° N, India