Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

Iwagami, N.; Shibaki, T.; Suzuki, Toshio; Sekiguchi, Hiroyuki; Takegawa, N.; Morrow, William H.

doi:10.1016/j.jastp.2003.08.002

Cited by 14 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The WAVE2000 campaign was carried out over Kagoshima, Japan, in January 2000. This campaign was planned to study the formation process of wave structures in the airglow image from both dynamical and chemical perspectives [ Iwagami et al , 2002, 2003]. The second campaign, WAVE2004, was conducted at the same place, Kagoshima, in January 2004.…”

Section: Wave Campaignsmentioning

confidence: 99%

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

Koizumi¹,

Kubota²,

Murayama³

et al. 2009

J. Geophys. Res.

View full text Add to dashboard Cite

[1] In order to investigate the dynamics of the mesopause region, foil chaff experiments were carried out successfully during the WAVE2000 and WAVE2004 campaigns at Kagoshima, Japan. In the WAVE2004 campaign, the height profiles of the horizontal and vertical wind speeds were obtained. The wind shear layers of >40 m/s/km were located around the altitudes of 89 and 95 km, and the profile of the Richardson number reveals the existence of dynamically unstable layers at about the same height region. Ripple observations using the all-sky imagers also support the possibility of dynamical instabilities. In the WAVE2000 campaign, a prominent small-scale feature around an altitude of 90.5 km appeared in both the horizontal and vertical chaff motions. These results demonstrate that the foil chaff technique is a valuable tool for in situ observation of small-scale turbulence features around the mesopause.

show abstract

Section: Wave Campaignsmentioning

confidence: 99%

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

Koizumi¹,

Kubota²,

Murayama³

et al. 2009

J. Geophys. Res.

View full text Add to dashboard Cite

show abstract

“…Model calculations of chemical species represent characteristics of large‐scale global distributions. Rocket observations of atomic oxygen indicate that the density of the atomic oxygen was often significantly perturbed by the passage of an atmospheric gravity wave or tide, and by the subsequent convective or dynamical instabilities induced by superposition of that wave [ Iwagami et al , 2003; Howlett et al , 1980; Melo et al , 1996; Hecht et al , 2004]. So, the density of atomic oxygen used in the temperature retrieval can be quite different from the local oxygen profile over the lidar site or rocket trajectory.…”

Section: Database Used and Analysis Proceduresmentioning

confidence: 99%

Comparison between the temperature measurements by TIMED/SABER and lidar in the midlatitude

Xu¹,

She²,

Yuan³

et al. 2006

J. Geophys. Res.

View full text Add to dashboard Cite

[1] Comparisons of monthly mean nighttime temperature profiles observed by the sodium lidar at Colorado State University and TIMED/SABER overpasses are made. In the altitude range from 85 km to about 100 km, the two observations are in very good agreement. Though within each other's error bars, important differences occur below 85 km in the entire year and above 100 km in the summer season. Possible reasons for these difference are high photon noise below 85 km in lidar observations and less than accurate assumptions in the concentration of important chemical species like oxygen (and its quenching rate) in the SABER retrieval above 100 km. However, the two techniques both show the two-level mesopause thermal structure, with the times of change from one level to the other in excellent agreement. Comparison indicates that the highlevel (winter) mesopause altitudes are also in excellent agreement between the two observations, though some difference (2-3 km) may exist in the low-level (summer) mesopause altitudes between ground-based and satellite-borne data. In addition, the difference in local time dependency between lidar and SABER is investigated; this difference makes the comparison of mesopause altitudes difficult.

show abstract

“…2.2 557.7-nm all-sky camera and Fabry-Perot interferometer An all-sky CCD imager for measuring OI 557.7-nm airglow in the lower thermosphere has been operated at Shigaraki to obtain two-dimensional airglow intensity maps (512×512 pixels) every 5.5 min with an exposure time of 105 s (Shiokawa et al, 1999). As the 557.7-nm emission occurs mostly at altitudes of 90-100 km with its peak intensity at around 96 km (McDade et al, 1986;Iwagami et al, 2003), we assume the emission altitude of 96 km in this paper. A Fabry-Perot interferometer (FPI) has also been operated at Shigaraki to measure the Doppler shift of 557.7-nm emission at zenith angles of 50 • ±4.75 • and at four azimuthal directions of N, S, E, and W, every 15 min, and to obtain neutral wind speed for the first and second fringes independently (Shiokawa et al, 2001).…”

Section: The Mu Radarmentioning

confidence: 99%

The first coordinated observations of mid-latitude <i>E</i>-region quasi-periodic radar echoes and lower thermospheric 557.7-nm airglow

et al. 2005

View full text Add to dashboard Cite

Abstract. We present the first coordinated observations of quasi-periodic (QP) radar echoes from sporadic-E (E s ) field-aligned irregularities (FAIs), OI 557.7-nm airglow, and neutral winds in a common volume over Shigaraki, Japan (34.9 • N, 136.1 • E) on the night of 5 August 2002 during the SEEK-2 campaign. QP echo altitudes of 90-110 km were lower than usual by 10 km, enabling us to make a detailed comparison among QP echoes, airglow intensity, and neutral wind at around 96 km altitude. Eastward movement of the QP echo regions is consistent with the motions of neutral winds, airglow structures, and FAIs, suggesting that the electrodynamics of E s -layers is fundamentally controlled by the neutral atmospheric dynamics. During the QP echo event, the echo altitudes clearly went up (down) in harmony with an airglow enhancement (subsidence) that also moved to the east. This fact suggests that the eastward-moving enhanced airglow region included an upward (downward) component of neutral winds to raise (lower) the altitude of the windshear node responsible for the E s formation. The airglow intensity, echo intensity, and Doppler velocity of FAIs at around 96 km altitude fluctuated with periods from 10 min to 1 h, indicating that these parameters were modulated with short-period atmospheric disturbances. Some QP echo regions below 100 km altitude contained small-scale QP structures in which very strong neutral winds exceeding 100 m/s existed. The results are compared with recent observations, theories, and simulations of QP echoes.

show abstract

Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

Cited by 14 publications

References 28 publications

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

Comparison between the temperature measurements by TIMED/SABER and lidar in the midlatitude

The first coordinated observations of mid-latitude <i>E</i>-region quasi-periodic radar echoes and lower thermospheric 557.7-nm airglow

Contact Info

Product

Resources

About

Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

Cited by 14 publications

References 28 publications

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

In situ observations of instabilities in the mesopause region using foil chaff technique during the Waves in Airglow Structures Experiment (WAVE) campaigns

Comparison between the temperature measurements by TIMED/SABER and lidar in the midlatitude

The first coordinated observations of mid-latitude &lt;i&gt;E&lt;/i&gt;-region quasi-periodic radar echoes and lower thermospheric 557.7-nm airglow

Contact Info

Product

Resources

About

The first coordinated observations of mid-latitude <i>E</i>-region quasi-periodic radar echoes and lower thermospheric 557.7-nm airglow