Search Results - "Singer, Werner"

Seasonal variation of mesospheric waves at northern middle and high latitudes by Hoffmann, Peter, Becker, Erich, Singer, Werner, Placke, Manja

“…The seasonal variation of the wave activity in the mesosphere/lower thermosphere is investigated using wind measurements with meteor and MF radars at Juliusruh…”
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Seasonal and solar activity variability of D-region electron density at 69°N by Singer, Werner, Latteck, Ralph, Friedrich, Martin, Wakabayashi, Makato, Rapp, Markus

“…A narrow beam Doppler radar operating at 3.17 MHz and installed close to the Andøya Rocket Range in Andenes, Norway, (69.3°N, 16.0°E) has been providing…”
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Polar mesosphere and lower thermosphere dynamics: 1. Mean wind and gravity wave climatologies by Dowdy, Andrew J., Vincent, Robert A., Tsutsumi, Masaki, Igarashi, Kiyoshi, Murayama, Yasuhiro, Singer, Werner, Murphy, Damian J.

“…Mean wind and gravity wave climatologies are presented for the polar mesosphere and lower thermosphere (MLT). The data were derived using MF radars at Davis…”
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Polar mesosphere and lower thermosphere dynamics: 2. Response to sudden stratospheric warmings by Dowdy, Andrew J., Vincent, Robert A., Tsutsumi, Masaki, Igarashi, Kiyoshi, Murayama, Yasuhiro, Singer, Werner, Murphy, Damian J., Riggin, D. M.

“…The dynamical response of the polar mesosphere and lower thermosphere (MLT) to sudden stratospheric warmings is investigated using MF radars at Davis (69°S,…”
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The diurnal variation of polar mesospheric cloud frequency near 55°N observed by SHIMMER by Stevens, Michael H., Englert, Christoph R., Hervig, Mark, Petelina, Svetlana V., Singer, Werner, Nielsen, Kim

“…We present the first measurement of polar mesospheric cloud (PMC) occurrence frequency over the diurnal cycle from a satellite. The observations are made…”
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Inter-hemispheric asymmetry in polar mesosphere summer echoes and temperature at 69° latitude by Morris, Ray J., Klekociuk, Andrew R., Latteck, Ralph, Singer, Werner, Holdsworth, David A., Murphy, Damian J.

“…An inter-hemispheric asymmetry is found in the characteristics of polar mesosphere summer echoes (PMSE) and upper mesosphere temperatures at conjugate…”
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Ground-based noontime D-region electron density climatology over northern Norway by Renkwitz, Toralf, Sivakandan, Mani, Jaen, Juliana, Singer, Werner

“…The bottom part of the Earth's ionosphere is the so-called D region, which is typically less dense than the upper regions. Despite the comparably lower…”
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Climatology of quasi-2-day wave structure and variability at middle latitudes in the northern and southern hemispheres by Iimura, Hiroyuki, Fritts, David C., Lieberman, Ruth S., Janches, Diego, Mitchell, Nicholas J., Franke, Steven J., Singer, Werner, Hocking, Wayne K., Taylor, Michael J., Moffat-Griffin, Tracy

“…Climatological structure of the quasi-2-day wave (Q2DW) at middle latitudes in temperature and horizontal winds in the mesosphere and lower thermosphere (MLT)…”
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Gravity wave momentum fluxes in the MLT—Part II: Meteor radar investigations at high and midlatitudes in comparison with modeling studies by Placke, Manja, Hoffmann, Peter, Becker, Erich, Jacobi, Christoph, Singer, Werner, Rapp, Markus

“…For the analysis of gravity waves the method presented by Hocking (2005) is used, which enables us to derive wind variances and gravity wave momentum fluxes in…”
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High-altitude data assimilation system experiments for the northern summer mesosphere season of 2007 by Eckermann, Stephen D., Hoppel, Karl W., Coy, Lawrence, McCormack, John P., Siskind, David E., Nielsen, Kim, Kochenash, Andrew, Stevens, Michael H., Englert, Christoph R., Singer, Werner, Hervig, Mark

“…A global numerical weather prediction system is extended to the mesosphere and lower thermosphere (MLT) and used to assimilate high-altitude satellite…”
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Preface: Recent progress from networked studies based around MST radar by Lehmann, Volker, Singer, Werner, Yamamoto, Masayuki

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Seasonal and solar activity variability of D-region electron density at 69 degree N by Singer, Werner, Latteck, Ralph, Friedrich, Martin, Wakabayashi, Makato, Rapp, Markus

“…A narrow beam Doppler radar operating at 3.17MHz and installed close to the Andeya Rocket Range in Andenes, Norway, (69.3 degree N, 16.0 degree E) has been…”
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Scientific Results from Networked and Multi-Instrument Studies Based around MST Radar by HOCKING, Wayne, SINGER, Werner, HOOPER, David, URBINA, Julio

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Mesosphere summer echoes, temperature, and meridional wind variations at mid- and polar latitudes by Zeller, Olof, Hoffmann, Peter, Bremer, Jürgen, Singer, Werner

“…VHF Radar echoes in the summer mesosphere at mid- and polar latitudes ([P]MSE—[polar] mesosphere summer echoes) are connected with very cold temperatures where…”
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The Hotel Payload 2 campaign: Overview of NO, O and electron density measurements in the upper mesosphere and lower thermosphere by Enell, Carl-Fredrik, Hedin, Jonas, Stegman, Jacek, Witt, Georg, Friedrich, Martin, Singer, Werner, Baumgarten, Gerd, Kaifler, Bernd, Hoppe, Ulf-Peter, Gustavsson, Björn, Brändström, Urban, Khaplanov, Mikhail, Kero, Antti, Ulich, Thomas, Turunen, Esa

“…The ALOMAR eARI Hotel Payload 2 (HotPay 2) rocket campaign took place at Andøya Rocket Range, Norway, in January 2008. The rocket was launched on January 31,…”
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Radar Backscatter from Underdense Meteors and Diffusion Rates by Singer, Werner, Latteck, Ralph, Millan, Luis Federico, Mitchell, Nick J., Fiedler, Jens

“…Many meteoroids burn up between about 120 km and 70 km, deposit metals and dust and form ionized trails which are detected by radars. Model studies about the…”
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The diurnal variation of polar mesospheric cloud frequency near 55°N observed by SHIMMER: Global Perspectives on the Aeronomy of the Summer Mesopause Region by STEVENS, Michael H, ENGLERT, Christoph R, HERVIG, Mark, PETELINA, Svetlana V, SINGER, Werner, NIELSEN, Kim

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Inter-hemispheric asymmetry in polar mesosphere summer echoes and temperature at 69° latitude: Global Perspectives on the Aeronomy of the Summer Mesopause Region by MORRIS, Ray J, KLEKOCIUK, Andrew R, LATTECK, Ralph, SINGER, Werner, HOLDSWORTH, David A, MURPHY, Damian J

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Radar measurements of turbulence, electron densities, and absolute reflectivities during polar mesosphere winter echoes (PMWE) by Lübken, Franz-Josef, Singer, Werner, Latteck, Ralph, Strelnikova, Irina

“…On January 21, 2005, strong radar echoes known as ‘polar mesosphere winter echoes’ (PMWE) were observed by the ALWIN VHF radar at 69°N. Peak reflectivites of…”
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The Hotel Payload 2 campaign: Overview of NO, O and electron density measurements in the upper mesosphere and lower thermosphere: Layered Phenomena in the Mesopause Region by ENELL, Carl-Fredrik, HEDIN, Jonas, BRÄNDSTRÖM, Urban, KHAPLANOV, Mikhail, KERO, Antti, ULICH, Thomas, TURUNEN, Esa, STEGMAN, Jacek, WITT, Georg, FRIEDRICH, Martin, SINGER, Werner, BAUMGARTEN, Gerd, KAIFLER, Bernd, HOPPE, Ulf-Peter, GUSTAVSSON, Bjorn

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