TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

The Aircraft to Satellite Data Relay(ASDAR) programme is sponsored by an International meteorological group in order to augment the collection of upper air meteorological data, and thereby improve the accuracy of global weather forescasting. It has been developed by Matra Marconi Space, UK in collaboration with the WMO to enable aircraft to generate and transmit real-time meteorological reports via geostationary meteorological satellites for global relay. It is an automated system offering significant advantages, including reduced crew responsibility delays and errors. ASDAR, operating in conjunction with meteorological satellites, has proved to be a versatile tool in obtaining meteorological data automatically from flights over both oceans and continents, especially over areas not serviced by meteorological stations. In addition, during the ascent and descent phases of the aircraft, observations at regular pressure intervals provide a detailed vertical atmospheric temperature profile near the airports. The meteorological data provided by this system has proved to be very useful for improving the weather forecasting service.  1, record 1, English, - Aircraft%20to%20Satellite%20Data%20Relay

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 OBS

The principal aims of the GUAN(Global Upper Air Network) project are to ensure a relatively homogenous distribution of upper air stations that meet specific record length and homogeneity requirements outlined by GCOS(Global Climate Observing System) and to develop, and make available, their current and historical data.  2, record 2, English, - Global%20Upper%20Air%20Network

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Le Réseau de stations d'observation en altitude (GUAN) pour le (Système mondial d'observation du climat) SMOC, qui comprend environ 160 stations, et le réseau de stations d'observation en surface pour le SMOC (GSN) Global Surface Network), qui en comprend un millier, ont été conçus pour servir d'assise un réseau climatique mondial de qualité. En dépit d'accords nationaux d'exploitation, leur fonctionnement laisse cependant à désirer. Ainsi, plus de 35% des stations du GUAN n'ont pas fourni les observations requises au cours du dernier trimestre 1997.  2, record 2, French, - R%C3%A9seau%20de%20stations%20d%27observation%20en%20altitude

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 OBS

Biological Filter. High-rate treatment can also be obtained in a biological filter system. Biological filtration is a technique for promoting contact between a free-flowing wastewater and a stationary growth of microorganisms in the presence of atmospheric air. The system does not depend on filtration in the usual sense for its effect.... Biological filter systems(such as the trickling filter) have generally proven to be unsuitable for pulp and paper wastewaters, exhibiting even greater instability to waste variability than activated sludge systems. However, the rotary disc system(a more recent design of biological filter) has been successful on a number of wastewaters and appears to deserve consideration for future applications. In this system a biological growth is cultivated on the disc surfaces. A series of closely-spaced corrugated plastic discs are anchored to a rotating shaft and supported above a trough through which the wastewater is channeled at a controlled rate. The lower 30 to 40% of each disc extends into the wastewater, while the upper portion is exposed to air. Thus, an area of biological growth alternates between submergence to absorb food and exposure to air for oxidation. Any number of rotating assemblies can be used in series to achieve the desired degree of BOD removal.  1, record 4, English, - rotary%20disc%20biological%20filter

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Les lits bactériens (filtres biologiques) constituent un autre mode de traitement à haut rendement. La filtration biologique consiste à mettre un liquide résiduaire en écoulement naturel au contact d'une population fixe de micro-organismes en présence d'air atmosphérique. Ce procédé ne constitue pas une filtration au sens habituel du terme. [...] Cependant, il s'est avéré que le modèle récent de filtre biologique, à disque rotatif, était efficace pour le traitement de certains effluents, et l'avenir de cet appareil s'annonce donc prometteur. Ce filtre comporte un ensemble de disques rapprochés, en plastique ondulé, assemblés sur un arbre rotatif et installés au-dessus d'une cuve où arrive l'effluent à traiter. La base des disques (environ 30 à 40% de leur surface) plonge dans l'effluent, le haut étant à l'air libre. La zone de croissance biologique est donc alternativement immergée, ce qui lui permet d'absorber des nutriments, puis exposée à l'air pour que l'oxydation se produise. Le nombre d'appareils installés en série dépend de la réduction de DBO souhaitée.  1, record 4, French, - filtre%20biologique%20%C3%A0%20disques%20rotatifs

Record 4,  Textual support,  Spanish