Results 271 to 280 of about 14,550 (304)
Some of the next articles are maybe not open access.
Aircraft observations of the surface energy balance in TOGA‐COARE
Quarterly Journal of the Royal Meteorological Society, 1998AbstractThe 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
Aircraft observations of NH3 from agricultural sources
2023Ammonia (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 +8 more
openaire +1 more source
Clear-Air Turbulence: Simultaneous Observations by Radar and Aircraft
Science, 1967Ultrasensitive 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 +3 more
openaire +2 more sources
Nonlinear Double-Integral Observer and Application to Quadrotor Aircraft
IEEE Transactions on Industrial Electronics, 2015This 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 +2 more
openaire +1 more source
Spectral analysis of an aircraft observation of gravity waves
Quarterly Journal of the Royal Meteorological Society, 1971AbstractThe 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.
exaly +2 more sources
Aircraft observations of marine stratocumulus during JASIN
Quarterly Journal of the Royal Meteorological Society, 1982AbstractObservations of marine stratocumulus obtained by three research aircraft during the JASIN experiment are presented. Detailed measurements were made of the thermodynamic, cloud physics and radiation fields. These showed an essentially well‐mixed boundary layer with cloud liquid water contents close to their adiabatic values. The mean drop radius
A. Slingo, S. Nicholls, J. Schmetz
openaire +1 more source
A Model for Visual Detection of Aircraft by Ground Observers
1974Abstract : A model is presented for predicting the time cumulative probabilities of visual detection of a single aircraft by a ground observer searching an unstructured background. The important elements of the model are supported by appropriate references to psychophysical experimentation.
null Arthur C., III Poe
openaire +1 more source
Army Soldier Observing Four Aircraft
1917An Army soldier observes four aircraft flying in formation over the air show at Moraine, while additional planes can be seen on the ground and the crowd of spectators in the distance. Circa 1917-1919.
openaire +1 more source