Weather instruments

The Aerosol Sampling Station ASS-500 (produced by the Central Laboratory for Radiological-Protection, Warsaw, Poland) is used for routine environmental air monitoring. The station is a stand-alone, all-weather instrument for continuous air aerosol collection. The high air-flow rate (up to 550 m h ) through a chlorinated vinyl... 

The best example of this is the hydrogen fire that destroyed the German airship Hindenburg, as it was landing in New Jersey on May 6, 1937 (see sidebar and photo on pages 258 and 259). Today, hydrogen balloons are used for lifting weather instruments into the upper atmosphere. 

Because helium does not burn, it is used rather than the iighter gas, hydrogen, to carry weather instruments into upper ieveis of the atmosphere. The instruments gather information on weather and atmospheric conditions. 

Relative humidity is measured by two kinds of additional weather instruments, the psychrometer and the hair gygrometer. 

Other standard weather instrumentation that has been used includes wind direction and velocity equipment and rain gages. 

BA-5590 30.0/15.0 24.0/12.0 7.2/14.4 1021 Radios (SINCGARS) Satelhte radios Scramblers Radar Loudspeakers LfHF radios Range finders Counter measures Weather instruments Jammers Cooling systems... 

For records on weather maps, meteoroiogists customariiy correct barometer readings to sea ievei, and some barometers may be caiibrated accordingiy. Such instruments are not suitabie for iaboratory use where true pressure under standard conditions is required. Scaie corrections shouid be specified in the maker s instructions with the instrument, and are aiso indicated by the iack of correspondence between a gauge mark usuaiiy piaced exactiy 76.2 cm from the zero point and the 76.2-cm scaie graduation. 

In cold weather, the trace heating on instruments that form part of trip and alarm systems should be inspected regularly. This can be part of the test routine, but more frequent testing may be necessary. 

Temperature Control (Manual) (Automatic). Instruments Controls (Weather Protected) (Explosion ProoO Level Controls - To Be Pressure Gauges To Be Condenser Cooling Water ... 

Meteorites on Mars. Meridiani Planum is the first Iron meteorite discovered on the surface of another planet, at the landing site of the Mars Exploration rover Opportunity [359]. Its maximum dimension is 30 cm (Fig. 8.38). Meteorites on the surface of solar system bodies can provide natural experiments for monitoring weathering processes. On Mars, aqueous alteration processes and physical alteration by Aeolian abrasion, for example, may have shaped the surface of the meteorite, which therefore has been investigated intensively by the MER instruments. Observations at mid-infrared wavelengths with the Mini-TES... 

The gravitation of the earth attracts the gaseous components of the air, which exert a force, known as atmospheric pressure, on the surface of the planet. The pressure on any particular place on the earth s surface depends on the amount of air above the place. It follows that the atmospheric pressure decreases at high altitudes, increases at low altitudes and below sea level, and is also affected by changes in weather. Measuring the atmospheric pressure is usually done with physical instruments known as barometers (see Fig. 83). 

Weather derivatives are another kind of financial instrument used by companies to hedge against the risk of weather-related losses. Weather derivatives pay out on a specified trigger, for example, temperature over a specified period rather than proof of loss. The investor providing a weather derivative charges the buyer a premium for access to capital. If nothing happens, then the investor makes a profit. 

The instrument for measurement of radon with weather parameters and water use was designed, calibrated and used in the field for 1.5 years with excellent results. The power surge and power interruptions were the only limitations on the use of the instrument. The system software was written mostly during the design phase of the project. However, modifications were made in the software to permit better data collection during power interruptions. Battery backup was needed to keep the data during interruptions of our one week studies. 

ISO 9370, Plastics - Instrumental determination of radiant exposure in weathering tests - General guidance and basic test method, 1997. 

The general requirements for accelerated weathering apparatus are given in ISO 4892-1 [29], whilst ISO 4892 Parts 2-4 [26-28] deal more specifically with xenon arcs, fluorescent tubes and carbon arcs respectively. ISO 4892 refers to ISO 9370 [30] (Instrumental determination of radiant exposure in weathering tests), and CIE publication 85 (Solar spectral irradiance) [31]. 

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