[PDF] Top 20 The gradient wind in the mesosphere and lower thermosphere
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The gradient wind in the mesosphere and lower thermosphere
... Finally, the effects of diurnal tides upon the terms in Eq. (10) are examined. Figure 10(a) shows a monthly mean com- posite of diurnal temperatures at the equator. This plot is analogous to Fig. 4(a), obtained by ... See full document
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Do minor sudden stratospheric warmings in the Southern Hemisphere (SH) impact coupling between stratosphere and mesosphere–lower thermosphere (MLT) like major warmings?
... the lower thermo- sphere, we present the GAIA zonal mean zonal winds at three altitudes (100, 130 and 140 km) in ...mesopause/lower thermosphere altitude (100 km), the wind reversal can be ... See full document
8
Cooperative wind observation in the upper mesosphere and lower thermosphere with foil chaff technique, the MU radar, and Yamagawa MF radar
... observe wind fields in the mesosphere and lower thermosphere (80–98 km in ...that wind fluctuations with a vertical scale of ∼ 2 km at 82–85 km are quite consistent with gravity wave ... See full document
11
Retrieval of sodium number density profiles in the mesosphere and lower thermosphere from SCIAMACHY limb emission measurements
... Meteoroids enter the Earth’s atmosphere at supersonic speed and are decelerated and frictionally heated by colli- sions with air molecules. These processes lead to the me- teoric ablation of metals and nonmetals into the ... See full document
17
Retrieval of nitric oxide in the mesosphere and lower thermosphere from SCIAMACHY limb spectra
... We present details of the retrieval algorithm, first re- sults, and initial comparisons to data from the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS). Our results agree on average well with MIPAS ... See full document
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Production and transport mechanisms of NO in the polar upper mesosphere and lower thermosphere in observations and models
... the lower ther- mosphere efficiently cools the atmosphere after periods of enhanced geomagnetic ...the mesosphere and lower thermosphere (MLT) region, the need for an improved representation ... See full document
15
Novel specular meteor radar systems using coherent MIMO techniques to study the mesosphere and lower thermosphere
... Abstract. Typical specular meteor radars (SMRs) use one transmitting antenna and at least a five-antenna interfero- metric configuration on reception to study the mesosphere and lower thermosphere ... See full document
15
Some anomalies of mesosphere/lower thermosphere parameters during the recent solar minimum
... The lower thermosphere wind reversal is owing to mo- mentum deposition of gravity waves (GWs) in the upper ...with wind speed amplitudes exceeding the intrinsic phase speed, ...mean ... See full document
6
Kelvin waves in stratosphere, mesosphere and lower thermosphere temperatures as observed by TIMED/SABER during 2002–2006
... the lower stratosphere commonly occur with periods of or- der 10–20 days and are known as “slow” Kelvin waves or “Wallace-Kousky” waves (Wallace and Kousky, 1968; Maruyama, ...stratosphere- mesosphere are ... See full document
7
Coordinated observations of the dynamics and coupling processes of mesosphere and lower thermosphere winds with MF radars at the middle high latitude
... the mesosphere into the dynamo region is probably disturbed by the sud- den increase of the eastward ...the mesosphere and the dynamo ...the wind field of the mesosphere and lower ... See full document
8
Three-dimensional tomographic reconstruction of atmospheric gravity waves in the mesosphere and lower thermosphere (MLT)
... Abstract. Gravity waves (GWs) have been intensively stud- ied over recent decades because of their dominant role in the dynamics of the mesosphere and lower thermosphere (MLT). The momentum ... See full document
15
Seasonal variability of atmospheric tides in the mesosphere and lower thermosphere: meteor radar data and simulations
... the mesosphere and lower thermosphere (MLT) is characterised by a variety of waves including at- mospheric gravity waves (GWs), tides, and planetary waves ...the thermosphere and ... See full document
6
Radar observations of the diurnal tide in the tropical mesosphere lower thermosphere region: Longitudinal variabilities
... the mesosphere and lower thermosphere (MLT) ...background wind, planetary waves or gravity ...radar wind observations of different durations from five equatorial/low latitude sites in ... See full document
12
The terdiurnal tide in the mesosphere and lower thermosphere over Wuhan (30°N, 114°E)
... Winds measured by an all-sky meteor radar have been used to investigate the terdiurnal tide in the mesosphere and lower thermosphere (MLT) region over Wuhan (30.6 ◦ N, 114.4 ◦ E). We present a ... See full document
6
Atomic oxygen number densities in the mesosphere–lower thermosphere region measured by solid electrolyte sensors on WADIS-2
... Abstract. Absolute profiles of atomic oxygen number den- sities with high vertical resolution have been determined in the mesosphere–lower thermosphere (MLT) region from in situ measurements by ... See full document
17
El Niño–Southern Oscillation effect on quasi biennial oscillations of temperature diurnal tides in the mesosphere and lower thermosphere
... zonal wind, and the U30 index ...zonal wind and DW1 amplitude with period near ...osphere, mesosphere and lower thermosphere to the ENSO warm phase of ... See full document
10
The dynamics of the mesosphere and lower thermosphere: a brief review
... the mesosphere-lower thermosphere (MLT) (60 to 110 km) is dominated by waves and their ...the thermosphere/ionosphere. Major disturbances lower in the atmosphere, such as wintertime ... See full document
13
Connection between the length of day and wind measurements in the mesosphere and lower thermosphere at mid and high latitudes
... the mesosphere and lower thermosphere (MLT) and changes in the intensity of solar ...upper mesosphere expands due to an increased radiation intensity, which results in changes in density at ... See full document
14
A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere
... mesosphere and lower thermosphere is presented. The instru- ment consists of a monolithic spatial heterodyne spectrome- ter (SHS), which is able to resolve the rotational structure of the R-branch of ... See full document
10
The 8-h tide in the mesosphere and lower thermosphere over Collm (51.3 N; 13.0 E), 2004–2011
... TDT phases (Fig. 2c and d) clearly change between winter and summer. Phase change with height is very small dur- ing winter, and therefore the vertical wavelength is very long then, generally exceeding 200 km. Since the ... See full document
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