Results 211 to 220 of about 10,801 (245)

Analysis of observed aircraft-to-aircraft separations

2008 Integrated Communications, Navigation and Surveillance Conference, 2008
As air traffic demand continues to increase in the coming years, the need for concepts, procedures and tools that can improve airspace efficiency will likewise increase. Reduction of terminal and en-route separation minima has been the focus of many of the concepts and emerging technologies developed to respond to this need.
Stephen Szurgyi, Sanjiv Shresta, Dejan Neskovic, James DeArmon, Scott Williams   +4 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

Aircraft observations near jet streams

Quarterly Journal of the Royal Meteorological Society, 1963
AbstractThe results of an analysis of 22 flights through jet streams by aircraft of the Meteorological Research Flight are presented. The average distributions of wind speed, vertical and horizontal wind shear, potential temperature, water vapour, cirrus cloud and ozone are obtained in relation to the jet core, and are discussed in relation to existing
J. Briggs, W. T. Roach
openaire   +1 more source

Melting layer observations with radar and aircraft

Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2002
Multiparameter radar measurements with the DLR polarimetric radar are combined with a vertical looking Doppler radar to study the melting of snow. The interpretation of the microphysical processes during melting by radar measurements is supported by in situ observations of the melting particles. >
Hagen, M. (Vortragender), Hubbert, J. (1), Richter, C. (2), Bringi, V.N. (1), Meischner, P.   +4 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 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