Results 71 to 80 of about 20,282 (172)
A comparison among four different retrieval methods for ice-cloud properties using data from CloudSat, CALIPSO, and MODIS [PDF]
, 2011 The A-Train constellation of satellites provides a new capability to measure vertical cloud profiles that leads to more detailed information on ice-cloud microphysical properties than has been possible up to now.
Delanoë, Julien +2 more
core +3 more sources
5. Long-term variations in meteor radar rates, meteor heights and radar-echo amplitudes [PDF]
Symposium - International Astronomical Union, 1968 An analysis of meteor radar rates, meteor end-point heights and radar-echo amplitudes observed over the period 1953–66 indicates a long-term variation in these quantities with highest values being recorded in 1963 near solar minimum. The phenomenon is explained in terms of a solar-controlled variation in air density at the 90- to 110-km level, with ...
openaire +1 more source
Describing the Global Gravity Field of Mars With Lithospheric Flexure and Deep Mantle Flow
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract The volcanic complex Tharsis Region on Mars is known for its numerous volcanoes on top of the crust, elevated topography (doming), and a long‐wavelength gravity anomaly correlated with the region. Flexural modeling of the lithosphere has commonly been used to understand the relationship between observed topography, crustal structure, and ...
Bart Root +3 more
wiley +1 more source
Physical and dynamical studies of meteors [PDF]
Distribution of meteors in streams detected in the synoptic-year meteor sample plus a study of the fragmentation characteristics of the synoptic-year meteor sample are presented.
Sekanina, Z., Southworth, R. B.
core +1 more source
, 2018 We investigate the possibility that sufficiently large electric fields and/or ionization during geomagnetic disturbed conditions may invalidate the assumptions applied in the retrieval of neutral horizontal winds from meteor and/or lidar measurements. As
Kumar, G. Kishore +2 more
core +1 more source
Small but mighty: Impact hazards from iron Near‐Earth Objects
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 224-240, February 2026.Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther +5 more
wiley +1 more source
A comparison of theoretical calculations with the results of radar meteor observations shows that the theory of radio meteors satisfactorily represents observational data.
Lebedinets, V. N.
core +1 more source
On the Energy Source of Green Emissions in Ghost
Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract The understanding on the formation mechanism of ghosts as a new category of transient luminous events and favorable conditions for their occurrence is limited. In this work, we examined six ground‐based observations of ghost events captured by digital SLR cameras.
Xin Huang +7 more
wiley +1 more source
Meteor observation by the Kyoto meteor radar [PDF]
The Kyoto Meteor Radar is a monostatic coherent pulsed Doppler radar operating on the frequency of 31.57 MH. The system is computer controlled and uses radio interferometry for echo height determination.
Kato, Susumu, Tsuda, Toshitaka
core +1 more source
Formation of plasma around a small meteoroid: 2. Implications for radar head echo [PDF]
, 2016 This paper calculates the spatial distribution of the plasma responsible for radar head echoes by applying the kinetic theory developed in the companion paper. This results in a set of analytic expressions for the plasma density as a function of distance
Dimant, Y. S., Oppenheim, M. M.
core +2 more sources