Results 221 to 230 of about 11,923 (261)

Multiparameter Radar and in Situ Aircraft Observation of Graupel and Hail

IEEE Transactions on Geoscience and Remote Sensing, 2000
Documenting simultaneous multiparameter radar observations of precipitation in conjunction with in situ hydrometeor sampling is important for the interpretation of multiparameter radar observations. In situ observation using aircraft-mounted probes is one of the best ways to collect such data.
V N Bringi
exaly   +2 more sources

Aircraft observations of convective cloud electrification

Journal of Atmospheric and Terrestrial Physics, 1959
Abstract A horizontal component of the potential gradient in and around developing trade-wind and extra-tropical cumulus clouds has been measured with field meters mounted in the wingtips of an airplane. Characteristic similarities and differences in the electrostatic behaviour of all-water and of mixed-phase clouds studied in 1953–1955 are discussed.
D.R. Fitzgerald, H.R. Byers
openaire   +1 more source

Clear-Air Turbulence: Simultaneous Observations by Radar and Aircraft

Science, 1967
Ultrasensitive radars and uninstrumented jet aircraft in concert have probed regions of the clear atmosphere in search of clear-air turbulence. All sources of clear-air radar echoes above 6 kilometers that were probed simultaneously by the aircraft were found to be turbulent.
J J, Hicks, I, Katz, C R, Landry, K R, Hardy   +3 more
openaire   +2 more sources

Observations and predictions of secondary neutrons on space shuttle and aircraft

Advances in Space Research, 1998
The Cosmic Radiation Effects and Activation Monitor has flown on six Shuttle flights between September 1991 and February 1995 covering the full range of inclinations as well as altitudes between 220 and 570 km, while a version has flown at supersonic altitudes on Concorde between 1988 and 1992 and at subsonic altitudes on a SAS Boeing 767 between May ...
P R, Truscott, C S, Dyer, H E, Evans, A J, Sims, C L, Peerless, P R, Knight, M, Cosby, J C, Flatman, C, Comber, N D, Hammond   +9 more
openaire   +2 more sources

Aircraft observations of the surface energy balance in TOGA‐COARE

Quarterly Journal of the Royal Meteorological Society, 1998
AbstractThe TOGA‐COARE (Tropical Ocean/Global Atmosphare Coupled Ocean‐Atomspahere Response Experiment) was in an international observational campaign designed to study the processes that occur in the Pacific warm pool region. Data from the Meteorologiacal Research Flight C130 aircraft are presented to illustrate some of the characteristics of the ...
ALM GRANT, P HIGNETT
openaire   +1 more source

Nonlinear Double-Integral Observer and Application to Quadrotor Aircraft

IEEE Transactions on Industrial Electronics, 2015
This paper presents a nonlinear double-integral observer based on finite-time stability. The proposed double-integral observer can estimate the onefold and double integrals of a signal synchronously, and the stability in time domain is analyzed. The merits of the presented double-integral observer include its finite-time stability, ease of parameter ...
Xinhua Wang 0001, Bijan Shirinzadeh, Marcelo H. Ang   +2 more
openaire   +2 more sources

Aircraft observations of NH3 from agricultural sources

2023
Ammonia (NH3) is mainly emitted in the atmosphere by anthropogenic activities, especially by agriculture. Excess emissions greatly disturb ecosystems, biodiversity, and air quality. Despite our awareness of these deleterious consequences, NH3 concentrations are increasing in most industrialized countries.
Lara Noppen, Lieven Clarisse, Frederik Tack, Thomas Ruhtz, Alexis Merlaud, Martin Van Damme, Michel Van Roozendael, Dirk Schuettemeyer, Pierre Coheur   +8 more
openaire   +1 more source

Aircraft observations of sea‐breeze frontal structure

Quarterly Journal of the Royal Meteorological Society, 1999
AbstractDetailed aircraft observations of sea‐breeze frontal structure and dynamics are presented for two cases of well defined sea‐breeze fronts near the east coast of England. In the first case the sea‐breeze was advancing into a well mixed convective boundary layer with strong turbulence and an offshore breeze of around 3 m s‐1.
R. Wood, I. M. Stromberg, P. R. Jonas
openaire   +1 more source

Microphysical variability in stratiform clouds: Aircraft observations

Quarterly Journal of the Royal Meteorological Society
Abstract The microphysical variability of stratiform precipitation over North China is investigated using in situ aircraft observations from eight vertical spirals in three stratiform events sampled during the ‘Demonstration Project for Precipitation Enhancement and Hail Suppression on the Eastern Side of Taihang ...
Xiangfeng Hu, Shaoyu Hou, Yinghui Lu, Kun Zhao, Shuwen Zhao, Rong Zhang, Yi Cui, Wuyi Wang, Hao Huang   +8 more
openaire   +1 more source

Spectral analysis of an aircraft observation of gravity waves

Quarterly Journal of the Royal Meteorological Society, 1971
AbstractThe characteristics of a full spectral analysis of an aircraft observation of gravity waves in the lower stratosphere are demonstrated. It is shown that the cross‐spectral quantities associated with the waves have characteristic properties which can be looked for in the analysis of more complex situations.
openaire   +1 more source