Large-scale structures in hydroxyl rotational temperatures during DYANA

Scheer, J.; Reisin, Esteban Rodolfo; Espy, James P.; Bittner, Michael; Graef, H. H.; Offermann, D.; Аммосов, Петр; Ignatyev, V. M.

doi:10.1016/0021-9169(94)90005-1

Cited by 32 publications

(15 citation statements)

References 23 publications

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“…The black dots correspond to rotational temperatures of four different OH bands and one set of OH Doppler temperature measurements. In spite of the different techniques, vibrational levels, or transition probabilities, the SD is surprisingly low: only 5.4 K (but consistent with previous ad-hoc estimates of the systematic uncertainty due to instrumental and theoretical contributions, e.g., Scheer et al, 1994). Note especially that the figure suggests no noticeable dependence on the transition probabilities used for OH rotational temperatures (at DAV and YAK, coefficients other than those by Mies (1974) were employed).…”

Section: Article In Presssupporting

confidence: 57%

Use of CRISTA mesopause region temperatures for the intercalibration of ground-based instruments

Scheer

Reisin

Gusev

et al. 2006

Journal of Atmospheric and Solar-Terrestrial Physics

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Most available ground-based (GB) techniques for measuring temperatures in the upper mesosphere to lower thermosphere (or mesopause region) have systematic errors that are comparable to those of orbiting instruments. Determining these unknown biasses would normally require colocated observations that are only seldom feasible. Satellite measurements can be used as a ''transfer standard'' between GB observations that are not colocated. In this context, even with a reproducible or known bias in the satellite data, the comparison is still meaningful. Since Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere (CRISTA) temperatures cover the mesopause region with very good accuracy (statistical errors do not exceed 1.5 K and systematic uncertainties range from about 3-7.5 K), they are quite suitable for this purpose. Because of the nearly constant precision over the height range of interest, also rotational temperatures of airglow emissions from different altitudes like the OH and O 2 bands (or the OI 558 nm line) can be successfully compared with each other. In spite of the limited number of overpasses during the relatively short CRISTA missions, the feasibility of such an intercalibration is demonstrated for widely separated GB sites. Here, the results obtained for GB measurements at eight different sites, using CRISTA-1 and CRISTA-2 data, are presented. For OH temperatures, the standard deviation between the different instruments is only 5.4 K, confirming previous estimates. r

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Section: Article In Presssupporting

confidence: 57%

Use of CRISTA mesopause region temperatures for the intercalibration of ground-based instruments

Scheer

Reisin

Gusev

et al. 2006

Journal of Atmospheric and Solar-Terrestrial Physics

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“…Another possible source of this oscillation is a hemispheric 13.8d oscillation, propagating from below and apparently controlled by solar activity as shown by Ebel et al (1978). It is worth noting that oscillations with a similar periods were also detected in temperature variations during the DYANA campaign (Bittner et al, 1994). A comparison between the results of S-transform and sliding least-squares fit for this wave is shown in Table 2 (the least-squares fit errors are shown in brackets).…”

Section: Resultsmentioning

confidence: 80%

“…The interval between the observation of the wave at the two pairs of stations is equal to about 20 days and during this interval the occurrence of a warming distorts the 5-day wave, namely 3.7-4 days oscillations were observed around 12 February at Collm and Kuehlungsborn. The DYANA campaign study of Bittner et al (1994) clearly revealed a nearly monochromatic temperature oscillation of about 5 days (4.2-6.5 days) and this wave was observed at practically all stations. The related study of Sheer et al (1994) further investigated oscillations with periods near to 5 days and concluded that a 5.8-day oscillation, revealed in the OH-rotational temperature measurements at Yakutsk (63…”

Section: Resultsmentioning

confidence: 98%

Some results of S-transform analysis of the transient planetary-scale wind oscillations in the lower thermosphere

et al. 2014

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Technique appropriate to the analysis of lower thermospheric wind data recorded by global-scale networks of ground-based instruments are discussed. The S-transform technique is shown to be effective in the analysis of the main features of travelling planetary waves and this method is applied to the time series of horizontal-velocity data obtained during the DYANA campaign (January- March, 1990). The analysis reveals strongly transient behavior of the day-to-day lower thermosphere wind variations, as well as their specific longitudinal structure. In particular, it was found that the revealed quasi-15 day and quasi-5 day wind oscillations may be described as transient westwardpropagating waves with zonal wavenumber s = 1, while an oscillation with the a period near 7 days is tentatively identified as having a wavenumber s = 0.

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“…Takahashi et al, 1974;Armstrong, 1975;Meriwether, 1975;Myrabo, 1986;Offermann and Gerndt, 1990;Sivjee, 1992;Scheer et al, 1994;Bittner et al, 2000). Mesopause temperatures are not only of interest because they represent the coldest part of the atmosphere, but there are indications that tropospheric warming by enhanced greenhouse effects may lead to a coolCorrespondence to: J. L. Innis (john.innis@aad.gov.au) ing of the upper mesosphere (Roble and Dickinson, 1989;Hauchecorne et al, 1991;Golitsyn et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…This approach has been used in a number of studies in both southern and northern hemispheres, and at a range of latitudes (e.g. Scheer and Reisen, 1990;Scheer et al, 1994;Takahashi et al, 1994;Sahai et al, 1996;Mulligan et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Mesospheric temperatures from observations of the hydroxyl (6–2) emission above Davis, Antarctica: A comparison of rotational and Doppler measurements

et al. 2001

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Abstract. We present observations of the hydroxyl (6-2) airglow lines from ∼87 km altitude obtained at Davis station, Antarctica, in the austral winter of 1999. Nine nights of observations were made of the P-branch near λ840 nm with a Czerny-Turner scanning spectrometer (CTS); at the same time, high-resolution Fabry-Perot Spectrometer (FPS) spectra were collected of the Q 1 (1) doublet at λ834 nm. Rotational temperatures were determined from the CTS observations, while Doppler temperatures were derived from the line-widths of the FPS Q 1 (1) spectra. Absolute temperatures determined by these methods are uncertain by ∼2 and ∼20 K, respectively. For the comparison we set the value of the reflective finesse of the FPS at λ834 nm so the mean FPS temperature from one night of simultaneous data was equal to that from the CTS, and then looked at the measured variations in each data set for the other eight nights. Both instruments show the upper mesosphere temperature to vary in a similar manner to within the observational errors of the measurements, implying an equivalence of the rotational and Doppler temperatures. We believe that this is the first published simultaneous, same-site, comparison of rotational and Doppler temperatures from the OH emission.

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Large-scale structures in hydroxyl rotational temperatures during DYANA

Cited by 32 publications

References 23 publications

Use of CRISTA mesopause region temperatures for the intercalibration of ground-based instruments

Use of CRISTA mesopause region temperatures for the intercalibration of ground-based instruments

Some results of S-transform analysis of the transient planetary-scale wind oscillations in the lower thermosphere

Mesospheric temperatures from observations of the hydroxyl (6–2) emission above Davis, Antarctica: A comparison of rotational and Doppler measurements

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