First observation of mesospheric and thermospheric winds by a Fabry-Perot interferometer in China

Yuan, Wei; Xu, Jiyao; Ma, Ruiping; Wu, Qian; Jiang, Guoying; Gao, Han; Liu, Xiao; Chen, SunZheng

doi:10.1007/s11434-010-4192-2

Cited by 38 publications

(41 citation statements)

References 11 publications

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“…Nevertheless, Yuan et al (2010) reported a 4-month oscillation in their seasonal analysis of NmF2 ionosonde data from 33 stations at three different longitudes from 1969 to 1986. They also found a good phase match between annual and semiannual oscillations as well as for the terannual oscillation; on this basis they concluded that the terannual oscillation could be the response to a nonlinear interaction between annual and semiannual oscillations.…”

Section: Discussionmentioning

confidence: 99%

Multi-year observations of gravity wave momentum fluxes at low and middle latitudes inferred by all-sky meteor radar

et al. 2015

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• W) were used to estimate the GW momentum fluxes and variances in the MLT region. Our analysis can provide monthly mean altitude profiles of vertical fluxes of horizontal momentum for short-period (less than 2-3 h) GWs. The averages for each month throughout the entire data series have shown different behavior for the momentum fluxes depending on latitude and component. The meridional component has almost the same behavior at the three sites, being positive (northward), for most part of the year. On the other hand, the zonal component shows different behavior at each location: it is positive for almost half the year at Cariri and SM but predominantly negative over CP. Annual variation in the GW momentum fluxes is present at all sites in the zonal component and also in SM at 89 km in the meridional component. The seasonal analysis has also shown a 4-month oscillation at 92.5 km over SM in the zonal component and over CP at the same altitudes but for the meridional component.

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Section: Discussionmentioning

confidence: 99%

Multi-year observations of gravity wave momentum fluxes at low and middle latitudes inferred by all-sky meteor radar

et al. 2015

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“…We have performed some preliminary studies based on the FPI data. Firstly, we compared the FPI winds during the period of 5 April-12 May 2010 with HWM93 (Yuan et al, 2010). Our comparisons showed that the winds from FPI agreed well with those from HWM93 at the altitudes of ∼ 87 and ∼ 98 km and exhibited apparent semidiurnal variations.…”

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confidence: 83%

“…Thus, the time resolution is ∼ 1 h (Jiang et al, 2012). From the interference patterns of airglow radiations, horizontal winds at the altitudes of ∼ 87, ∼ 98 and ∼ 250 km are derived with a time interval of ∼ 1 h. A detailed description of the FPI and data processing method can be found in Wu et al (2004) and Yuan et al (2010). Here, we concentrate on the distributions of the available wind data from April 2010 to July 2012.…”

Section: Instrument and Datamentioning

confidence: 99%

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FPI observations of nighttime mesospheric and thermospheric winds in China and their comparisons with HWM07

Yuan

Liu

et al. 2013

Ann. Geophys.

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We analyzed the nighttime horizontal neutral winds in the middle atmosphere (~ 87 and ~ 98 km) and thermosphere (~ 250 km) derived from a Fabry–Perot interferometer (FPI), which was installed at Xinglong station (40.2° N, 117.4° E) in central China. The wind data covered the period from April 2010 to July 2012. We studied the annual, semiannual and terannual variations of the midnight winds at ~ 87 km, ~ 98 km and ~ 250 km for the first time and compared them with Horizontal Wind Model 2007 (HWM07). Our results show the following: (1) at ~ 87 km, both the observed and model zonal winds have similar phases in the annual and semiannual variations. However, the HWM07 amplitudes are much larger. (2) At ~ 98 km, the model shows strong eastward wind in the summer solstice, resulting in a large annual variation, while the observed strongest component is semiannual. The observation and model midnight meridional winds agree well. Both are equatorward throughout the year and have small amplitudes in the annual and semiannual variations. (3) There are large discrepancies between the observed and HWM07 winds at ~ 250 km. This discrepancy is largely due to the strong semiannual zonal wind in the model and the phase difference in the annual variation of the meridional wind. The FPI annual variation coincides with the results from Arecibo, which has similar geomagnetic latitude as Xinglong station. In General, the consistency of FPI winds with model winds is better at ~ 87 and ~ 98 km than that at ~ 250 km. We also studied the seasonally and monthly averaged nighttime winds. The most salient features include the following: (1) the seasonally averaged zonal winds at ~ 87 and ~ 98 km typically have small variations throughout the night. (2) The model zonal and meridional nighttime wind variations are typically much larger than those of observations at ~ 87 km and ~ 98 km. (3) At ~ 250 km, model zonal wind compares well with the observation in the winter. For spring and autumn, the model wind is more eastward before ~ 03:00 LT but more westward after. The observed nighttime zonal and meridional winds on average are close to zero in the summer and autumn, which indicates a lack of strong stable tides. The consistency of FPI zonal wind with model wind at ~ 250 km is better than the meridional wind

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“…The FPI in Kelan observes at wavelength of OH 892.0, OI 557.7, and OI 630.0 nm to derive the nighttime wind and temperature at 87, 97, and 250 km, respectively, and is designed almost the same as the one in Xinglong (40.2 • N, 117.4 • E) [36]. More details of the mechanism can be found in Yu et al [30].…”

Section: Fpi Datamentioning

confidence: 99%

Properties of the Long-Term Oscillations in the Middle Atmosphere Based on Observations from TIMED/SABER Instrument and FPI over Kelan

et al. 2017

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Abstract:The properties of the long-term oscillations in the middle atmosphere have been investigated using the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) temperature data and Fabry-Perot interferometer (FPI) data. Results for SABER temperature show that the semiannual oscillation (SAO) has three amplitude maxima at altitudes of 45, 75, and 85 km, respectively, and shows prominent seasonal asymmetries there. The SAOs in the upper mesosphere (75 km) are out of phase with those in the mesopause (85 km) in the tropical regions, which can generate an enhancement of 11 K on average at each equinox, contributing to the lower mesospheric inversion layer (MIL). It is shown that stronger enhancement can be found at the spring equinox than at the autumn equinox. The triennial oscillation (TO) is significant in the tropical region. The spectral peak of the TO is probably a sub-peak of the quasi-biennial oscillation (QBO) and is due to modulation of QBO. In addition, there may be potential interaction of the TO with SAO at 85 km at the equator. The relation between ENSO and TO has also been discussed. The ENSO signal may modulate the amplitude of the TO, mainly in the lower stratosphere. The annual oscillation (AO) and SAO are analyzed over Kelan by FPI data. Generally, the amplitudes of FPI wind are smaller than those of the Horizontal Wind Model (HWM07). The comparison between FPI and TIMED Doppler Interferometer (TIDI) winds shows relatively large discrepancy. This may be due to the tidal aliasing in the nighttime results derived from the FPI data. Results also show that the algorithm to derive FPI temperature needs improvements.

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First observation of mesospheric and thermospheric winds by a Fabry-Perot interferometer in China

Cited by 38 publications

References 11 publications

Multi-year observations of gravity wave momentum fluxes at low and middle latitudes inferred by all-sky meteor radar

Multi-year observations of gravity wave momentum fluxes at low and middle latitudes inferred by all-sky meteor radar

FPI observations of nighttime mesospheric and thermospheric winds in China and their comparisons with HWM07

Properties of the Long-Term Oscillations in the Middle Atmosphere Based on Observations from TIMED/SABER Instrument and FPI over Kelan

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