[PDF] Top 20 Polar mesosphere winter echoes during MaCWAVE
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Polar mesosphere winter echoes during MaCWAVE
... al.: Polar mesosphere winter echoes during MaCWAVE echo power is well known in the case of Polar Mesosphere Summer Echoes (PMSE) and it is there considered ... See full document
11
Annales Geophysicae The MaCWAVE program to study gravity wave influences on the polar mesosphere
... this MaCWAVE special ...coupling during North- ern Hemisphere summer in 2002 to small-scale neutral and plasma dynamics and layering under summer and winter ...the MaCWAVE results obtained to ... See full document
15
Infrasound – the cause of strong Polar Mesosphere Winter Echoes?
... the mesosphere and consti- tutes the D-region, the lowest part of the Earth’s ionosphere (see, ...radar echoes, with the strongest echoes appearing in the upper mesosphere in summer and ... See full document
17
Polar mesosphere summer echoes during the July 2000 solar protonevent
... 2 Institute for Astronomy and Astrophysics, University of Munich, D-81679 Munich, Germany Received: 30 January 2003 – Revised: 30 June 2003 – Accepted: 13 August 2003 – Published: 19 March 2004 Abstract. The influence of ... See full document
14
The dynamical background of polar mesosphere winter echoes from simultaneous EISCAT and ESRAD observations
... 2004 during a strong solar pro- ton event, layers of enhanced backscatter from altitudes be- tween 55 and 75 km have been observed by both ESRAD (52 MHz) and the EISCAT VHF (224 MHz) ...These echoes have ... See full document
9
The dynamical background of polar mesosphere winter echoes from simultaneous EISCAT and ESRAD observations
... 2004 during a strong solar pro- ton event, layers of enhanced backscatter from altitudes be- tween 55 and 75 km have been observed by both ESRAD (52 MHz) and the EISCAT VHF (224 MHz) ...These echoes have ... See full document
11
High-speed solar wind streams and polar mesosphere winter echoes at Troll, Antarctica
... In order for PWME to be detected by the radar, they have to be strong enough to exceed the noise level of the measure- ments. Several factors affect the strength of any radar echo from the mesosphere. Basically ... See full document
14
Polar mesosphere summer echoes during the July 2000 solar proton event
... 2 Institute for Astronomy and Astrophysics, University of Munich, D-81679 Munich, Germany Received: 30 January 2003 – Revised: 30 June 2003 – Accepted: 13 August 2003 – Published: 19 March 2004 Abstract. The influence of ... See full document
13
ANGEO - Geomagnetic control of polar mesosphere summer echoes
... MHz during the years 1994±1997 present- ed here, Bremer et ...observations during years at high solar/geomagnetic activity to decide if the detected dierences are caused by the levels of geomagnetic ... See full document
7
Investigation of Polar Mesosphere Summer Echoes in Northern Scandinavia
... obtained during the first complete season of PMSE observations using the Esrange MST radar are ...the echoes is not determined by large scale wind shear producing turbulence, but rather by small scale ... See full document
38
In-situ electron and ion measurements and observed gravity wave effects in the polar mesosphere during the MaCWAVE program
... current during the downleg portion of the flight was not depleted as strongly, but the current did go to a very small value, suggesting a “bite-out” over a narrow altitude ...flights during PMSE and NLC ... See full document
12
EISCAT and ESRAD radars observations of polar mesosphere winter echoes during solar proton events on 11–12 November 2004
... turbulent echoes, then strong turbulence dissipation rates of 100 mW kg −1 are re- quired in order to account for the observed PMWE spectral ...for echoes of turbulent ... See full document
14
Occurrence of polar mesosphere summer echoes at very high latitudes
... In the following, the general details of these properties will be discussed. 3.1 Seasonal variation Due to constraints in transmitter reliability and manpower limitations, it was not possible to sustain measurements ... See full document
12
Tristatic observation of polar mesosphere winter echoes with the EISCAT VHF radar on 8 January 2014: a case study
... Abstract Polar mesosphere winter echoes (PMWE) were observed at 70 km over Tromsø, Norway, on 8 January 2014 using the tristatic configuration of the European incoherent scatter VHF ...the ... See full document
12
Similarities and differences in polar mesosphere summer echoes observed in the Arctic and Antarctica
... Davis during austral summer of ...N) during the boreal summer of 2004 and Davis (69 ◦ S) during the austral summer of 2004/2005 on the basis of radar volume ... See full document
12
Polar mesosphere summer echoes: a comparison of simultaneous observations at three wavelengths
... made during summer 2005 as part of an international PMSE-EISCAT ...experiment during that ...strong echoes at about 84 km were detected with all three ... See full document
10
Polar mesosphere summer echoes (PMSE): review of observations and current understanding
... see Sect. 3). During the same campaign, Havnes et al. (1996b) also observed a layer of positively charged aerosol particles collocated with an electron enhancement (in- 15 stead of the more common biteout) in the ... See full document
101
Polar mesosphere summer echoes: a comparison of simultaneous observations at three wavelengths
... made during summer 2005 as part of an international PMSE-EISCAT ...experiment during that ...strong echoes at about 84 km were detected with all three ... See full document
11
VHF radar and MF/HF dynasonde observations during Polar Mesosphere Summer Echoes conditions at EISCAT
... The mesosphere is a particular difficult region of the at- mosphere to be ...strong echoes from the summer mesopause at VHF band has led to a pronounced interest in radio scattering from the ...These ... See full document
8
Occurrence frequencies of polar mesosphere summer echoes observed at 69 N during a full solar cycle
... Abstract. Polar mesosphere summer echoes (PMSE) are strong enhancements of received signal power at very high radar frequencies occurring at altitudes between about 80 and 95 km at polar ... See full document
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