Another is in inches or millimeters of mercury (Hg). The top of the rain gauge is ideally 0.3 m above the ground with no nearby objects to alter the wind flow. The unit used to measure the volume of sound is the decibel (dB). To measure rainfall, the stick is inserted through the orifice of collector funnel and allowed to extend to the bottom of the measuring tube. The MODIS Tools section has a complete listing of web-based tools that can be used to access a wide variety of MODIS Data, along with an array of links and a summary of each tool. Infrared imagery is used to monitor aerosols, clouds, thunderstorms, hurricanes, rainfall, moisture, atmospheric motion, and volcanic ash. TMI is a multi-channel, dual polarized, conical scanning passive microwave radiometer designed to measure rain rates over a wide swath under the TRMM satellite. In the equatorial Pacific, as the warm pool propagates eastward, clouds and rainfall move with it and leave the Western Pacific in dry conditions that often lead to drought across Indonesia, southeast Asia, and northern Australia. [1805–15; independent use of -meter,influenced in some senses by mete 1]-meter. A number of sensing technologies are used in precision agriculture, providing data that helps farmers monitor and optimize crops, as well as adapt to changing environmental factors including: Location Sensors use signals from GPS satellites to determine latitude, longitude, and altitude to within feet. Visit Group's Website. If you've used a fan, air conditioner or even the sound of clothes tumbling in a dryer to help you fall asleep, you're far from alone. The instrument's three main parts are a radar, a radiometer and the largest rotating mesh antenna ever deployed in space. 2. parking meter. The sextant consists of two primary assemblies. For example, trace amounts of precipitation, less than 0.2 mm, are not recorded by the instruments. The second critical component of celestial navigation is to measure the angle formed at the observer's eye between the celestial body and the sensible horizon. Among the channels that are expected to be fully available is the band that is used for fog/cloud identification at night and for fire/hot spot detection, which will be critical for forecasters in the western U.S. For each layer of cloud identified by the instrument a time weighted average is used to derive the average amount. Visit Group's Website. An indicator is an instrument that helps you measure change over time. The number of instruments can vary, but most personal weather stations include instruments to measure temperature, relative humidity, pressure, rain fall, and wind speed and direction. 4. to process (mail) by means of a postage meter. How the Ear Works. There are two types of rain gauges, non-recording type and recording type. Instrument: Rain Gauge (or Rain Gage) Rainfall impacts all of us, from the lack of rain during times of drought to the dangers of flash floods when we receive too much rain too fast. OUTER EAR. All of the weather stations on this page feature an anemometer for wind speed, a self-emptying "tipping bucket" rain gauge to measure rainfall, a hygrometer to measure humidity and a thermometer to measure temperature. The EcoWitt was within 4% of the rainfall measured by a Stratus accumulator gauge mounted next to it. In the future, the Aquarius team wants to use another instrument aboard Aquarius/SAC-D, the Argentine-built Microwave Radiometer, to gauge the presence of intense rain simultaneously to salinity readings, so that scientists can flag data collected during heavy rainfall. Throughout Victoria, the Dines pluviograph was initially used to measure rainfall intensity and were replaced with RIMCO TBRGs from the early 1990s. Scheduled for launch on Jan. 29, 2015, NASA's Soil Moisture Active Passive (SMAP) instrument will measure the moisture lodged in Earth's soils with an unprecedented accuracy and resolution. An important difference between the instruments is that the TBRGs that were used have a minimum resolution of 0.2 mm, the quantity of water required to cause a “tip” while the pluviographs do not have a minimum resolution. Calibration. A rain gauge is an instrument used by meteorologists and hydrologists to measure liquid precipitation (rain) in a certain amount of time. Tiltmeters are highly sensitive instruments used to measure ground tilt (rotation) near faults and volcanoes caused by fault slip and volcanic uplift. The ancillary data inputs and implementation of the L2_SM_AP may differ from those used by L2_SM_P because of the spatial resolution differences at 9 and 36 km. The Tropical Rainfall Measuring Mission (TRMM) was launched November 27, 1997 carrying 5 instruments, one of which is the TRMM Microwave Imager (TMI). For some interests - such as gardeners, farmers, and meteorologists - rain gage data is critical information. The retrieval algorithm used to estimate soil moisture from the disaggregated 9 km brightness temperatures uses the same approach as the L2_SM_P radiometer-only soil moisture product. Gauge definition is - a measurement ( as of linear dimension ) according some. Of a postage meter celestial bodies above the horizon accumulator gauge mounted next it! Type of instrument used by meteorologists and hydrologists to measure ground tilt ( rotation ) near faults volcanoes. 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