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Gpm grabit7/6/2023 Relative to the TRMM precipitation radar, the DPR is more sensitive to light rain rates and snowfall. The DPR originally collected data over a swath of 78 and 152 miles (125 and 245km) for the Ka and Ku band radars respectively, but since May 2018 the swath now covers 152 miles (245 km) for both radars. DPR provides three-dimensional measurements of precipitation structure and characteristics. The DPR instrument consists of a Ka-band precipitation radar (KaPR) operating at 35.5 GHz and a Ku-band precipitation radar (KuPR) operating at 13.6 GHz. The GPM Core Observatory carries the first space-borne Ku/Ka-band Dual-frequency Precipitation Radar (DPR) and a multi-channel GPM Microwave Imager (GMI). The Core Observatory acts as a reference standard for the precipitation estimates acquired by the GPM constellation of sensors. This capability drives the designs of both the active and passive microwave instruments on GPM. Since light rain and falling snow account for significant fractions of precipitation occurrences in middle and high latitudes, a key advancement of GPM over TRMM is the extended capability to measure light rain (< 0.5 mm hr-1), solid precipitation and the microphysical properties of precipitating particles. The GPM Core Observatory design is an extension of TRMM’s highly successful rain-sensing package, which focused primarily on heavy to moderate rain over tropical and subtropical oceans. The GPM Core Observatory continues this sampling from a non-Sun-synchronous orbit and extends coverage to higher latitudes to provide a near global view of precipitation. TRMM showed the importance of taking observations from a non-Sun-synchronous orbit at different times of the day, between observations by polar orbiting sensors at fixed times of the day, to improve near real-time monitoring of hurricanes and accurate estimates of rainfall accumulation over time. It also provided a foundation for merging rainfall information from other satellites. The Tropical Rainfall Measuring Mission (TRMM), launched by NASA and JAXA in 1997, used both active and passive microwave instruments to measure rainfall in the tropics. The GPM Core Observatory launched on February 27th, 2014 at 1:37pm EST from Tanegashima Space Center, Japan. GPM, initiated by NASA and the Japan Aerospace Exploration Agency (JAXA) as a global successor to TRMM, comprises a consortium of international space agencies, including the Centre National d’Études Spatiales (CNES), the Indian Space Research Organization (ISRO), the National Oceanic and Atmospheric Administration (NOAA), the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), and others. Through improved measurements of precipitation globally, the GPM mission is helping to advance our understanding of Earth's water and energy cycles, improve forecasting of extreme events that cause natural hazards and disasters, and extend current capabilities in using accurate and timely information of precipitation to directly benefit society. Building upon the success of the Tropical Rainfall Measuring Mission (TRMM), the GPM concept centers on the deployment of a “Core Observatory” satellite carrying an advanced radar / radiometer system to measure precipitation from space and serve as a reference standard to unify precipitation measurements from a constellation of research and operational satellites. In essence, all you need to do it enter any two variables you know and the GPM calculator will determine the third one.The Global Precipitation Measurement (GPM) mission is an international network of satellites that provide next-generation global observations of rain and snow. To find time - e.g., how long it'll take to fill a pool:Įnter the volume of a container in the first field of the GPM calculator.Įnter the flow rate of water in the last field. You'll find the result in the "Volume" row. Reset the water flow rate calculator using the arrow symbol below it. To find volume - e.g., know how much water you'll use for a 15-minute shower : You can change it to a different GPM unit as you please. You'll find the flow rate in the last field of the gallons per minute calculator. Input the volume of the liquid in the first field.Ĭhoose the unit of time in which the given volume of water flowed. For a myriad of other units of volume, you may find our separate volume calculator very interesting. To find the flow rate - e.g., when you ask " How many gallons per minute does a shower use?", follow the points below:Ĭhoose the unit in which you will count the volume.
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