Search Results - "Häusler, B"

Sporadic Third Layer in the Ionosphere of Mars by Pätzold, M, Tellmann, S, Häusler, B, Hinson, D, Schaa, R, Tyler, G. L

“…The daytime martian ionosphere has been observed as a two-layer structure with electron densities that peak at altitudes between about 110 and 130 kilometers…”
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A homogeneous nucleus for comet 67P/Churyumov–Gerasimenko from its gravity field by Pätzold, M., Andert, T., Hahn, M., Asmar, S. W., Barriot, J.-P., Bird, M. K., Häusler, B., Peter, K., Tellmann, S., Grün, E., Weissman, P. R., Sierks, H., Jorda, L., Gaskell, R., Preusker, F., Scholten, F.

“…The precise mass, bulk density, porosity and internal structure of the nucleus of comet 67P/Churyumov–Gerasimenko are calculated, on the basis of its gravity…”
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Sulfuric acid vapor and sulfur dioxide in the atmosphere of Venus as observed by the Venus Express radio science experiment VeRa by Oschlisniok, J., Häusler, B., Pätzold, M., Tellmann, S., Bird, M.K., Peter, K., Andert, T.P.

“…The Venus Express radio science experiment VeRa provided more than 900 neutral atmospheric profiles between the years 2006 and 2014. About 800 of these could…”
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Observations of the nightside ionosphere of Mars by the Mars Express Radio Science Experiment (MaRS) by Withers, Paul, Fillingim, M. O., Lillis, R. J., Häusler, B., Hinson, D. P., Tyler, G. L., Pätzold, M., Peter, K., Tellmann, S., Witasse, O.

“…The vertical structure of the nightside ionosphere of Mars and its dependence on solar zenith angle are currently poorly determined, as is the importance of…”
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Dependence of Dayside Electron Densities at Venus on Solar Irradiance by Hensley, K., Withers, P., Girazian, Z., Pätzold, M., Tellmann, S., Häusler, B.

“…The ionosphere of Venus is a weakly ionized plasma layer embedded in the planet's upper atmosphere. Planetary ionospheres provide an excellent opportunity to…”
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The martian daytime convective boundary layer: Results from radio occultation measurements and a mesoscale model by Hinson, D.P., Tyler, D., Lewis, S.R., Pätzold, M., Tellmann, S., Häusler, B., Tyler, G.L.

“…We investigate the behavior of the Martian daytime convective boundary layer (CBL) through a combination of data analysis and modeling. This study relies on…”
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Asteroid 21 Lutetia: Low Mass, High Density by Pätzold, M., Andert, T. P., Asmar, S. W., Anderson, J. D., Barriot, J.-P., Bird, M. K., Häusler, B., Hahn, M., Tellmann, S., Sierks, H., Lamy, P., Weiss, B. P.

“…Asteroid 21 Lutetia was approached by the Rosetta spacecraft on 10 July 2010. The additional Doppler shift of the spacecraft radio signals imposed by 21…”
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Precise mass determination and the nature of Phobos by Andert, T. P., Rosenblatt, P., Pätzold, M., Häusler, B., Dehant, V., Tyler, G. L., Marty, J. C.

“…We report independent results from two subgroups of the Mars Express Radio Science (MaRS) team who independently analyzed Mars Express (MEX) radio tracking…”
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Small-scale temperature fluctuations seen by the VeRa Radio Science Experiment on Venus Express by Tellmann, S., Häusler, B., Hinson, D.P., Tyler, G.L., Andert, T.P., Bird, M.K., Imamura, T., Pätzold, M., Remus, S.

“…► Vertical small scale temperature perturbations in the Venus atmosphere are studied. ► Gravity wave activity is significantly enhanced above the tropopause. ►…”
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Mars Express 10 years at Mars: Observations by the Mars Express Radio Science Experiment (MaRS) by Pätzold, M., Häusler, B., Tyler, G.L., Andert, T., Asmar, S.W., Bird, M.K., Dehant, V., Hinson, D.P., Rosenblatt, P., Simpson, R.A., Tellmann, S., Withers, P., Beuthe, M., Efimov, A.I., Hahn, M., Kahan, D., Le Maistre, S., Oschlisniok, J., Peter, K., Remus, S.

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Microwave absorptivity by sulfuric acid in the Venus atmosphere: First results from the Venus Express Radio Science experiment VeRa by Oschlisniok, J., Häusler, B., Pätzold, M., Tyler, G.L., Bird, M.K., Tellmann, S., Remus, S., Andert, T.

“…► 3.6cm Radio absorption in the Venus atmosphere between 2006 and 2011 is studied. ► A distinct latitudinal variation in the southern hemisphere is observed. ►…”
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The depth of the convective boundary layer on Mars by Hinson, D.P., Pätzold, M., Tellmann, S., Häusler, B., Tyler, G.L.

“…We are using observations obtained with Mars Express to explore the structure and dynamics of the martian lower atmosphere. We consider a series of radio…”
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Phobos mass determination from the very close flyby of Mars Express in 2010 by Pätzold, M., Andert, T.P., Tyler, G.L., Asmar, S.W., Häusler, B., Tellmann, S.

“…•Closest spacecraft flby at the Mars moon Phobos.•Mass, bulk density determined.•Gravity field could not be resolved.•Phobos interior modeled.•Phobos probably…”
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Radiative energy balance of Venus based on improved models of the middle and lower atmosphere by Haus, R., Kappel, D., Tellmann, S., Arnold, G., Piccioni, G., Drossart, P., Häusler, B.

“…•Radiative forcing of Venus’ atmosphere is studied based on VEX data.•Cooling strongly responds to atmospheric parameter changes, heating is less…”
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Dynamical properties of the Venus mesosphere from the radio-occultation experiment VeRa onboard Venus Express by Piccialli, A., Tellmann, S., Titov, D.V., Limaye, S.S., Khatuntsev, I.V., Pätzold, M., Häusler, B.

“…► Venus mesosphere was studied by the radio-occultation experiment VeRa/Venus Express. ► Zonal winds were derived by VeRa pressure profiles using the…”
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Internal structure of a coronal mass ejection revealed by Akatsuki radio occultation observations by Ando, H., Shiota, D., Imamura, T., Tokumaru, M., Asai, A., Isobe, H., Päzold, M., Häusler, B., Nakamura, M.

“…A coronal mass ejection (CME) was observed at the heliocentric distance of 12.7 Rυ by radio occultation measurements using the Akatsuki spacecraft. The…”
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A sporadic layer in the Venus lower ionosphere of meteoric origin by Pätzold, M., Tellmann, S., Häusler, B., Bird, M. K., Tyler, G. L., Christou, A. A., Withers, P.

“…The Venus Express Radio Science (VeRa) experiment aboard Venus Express has detected, by means of radio occultation, distinct, low‐lying layers of electron…”
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Update of the Venus density and temperature profiles at high altitude measured by SOIR on board Venus Express by Mahieux, A., Vandaele, A.C., Bougher, S.W., Drummond, R., Robert, S., Wilquet, V., Chamberlain, S, Piccialli, A., Montmessin, F., Tellmann, S., Pätzold, M., Häusler, B., Bertaux, J.L.

“…The SOIR instrument on board Venus Express regularly sounds the Venus atmosphere using the solar occultation technique. The density and temperature profiles…”
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Vertical structure of the Venus cloud top from the VeRa and VIRTIS observations onboard Venus Express by Lee, Y.J., Titov, D.V., Tellmann, S., Piccialli, A., Ignatiev, N., Pätzold, M., Häusler, B., Piccioni, G., Drossart, P.

“…► Venus cloud top structure is retrieved from the joint analysis of VeRa and VIRTIS. ► Cloud top altitudes show a pole ward decent trend from ∼ 67 km to ∼ 63…”
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Comment on the paper “Mars Express radio occultation data: A novel analysis approach” by Grandin et al. (2014) by Pätzold, M., Bird, M. K., Häusler, B., Peter, K., Tellmann, S., Tyler, G. L.

“…In their recent paper, Grandin et al. (2014) claim to have developed a novel approach, principally a ray tracing method, to analyze radio sounding data from…”
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