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Gps technology improves weather forecasting - China Automobile DVD Players - Volvo DVD GPS by grehh hernjer
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Gps technology improves weather forecasting - China Automobile DVD Players - Volvo DVD GPS by GREHH HERNJER
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Article Posted: 04/15/2013 |
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Gps technology improves weather forecasting - China Automobile DVD Players - Volvo DVD GPS |
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Researchers at RMIT University's SPACE Research Centre and theBureau of Meteorology are using GPS and low earth orbit satellitesto provide an additional type of temperature profile observationfor use in weather forecasting computer models. The computer models draw on about a hundred thousand millioncurrent weather observations, including data from 30 to 40complementary satellite instruments, to generate the informationused by meteorologists to prepare weather forecasts RMIT Adjunct Professor John Le Marshall, Research Program leader atthe Bureau of Meteorology and former Inaugural Director of theJoint Center for Satellite Data Assimilation, a joint NOAA, NASAand DOD research initiative in Washington, said: "What we'vefound through our work with RMIT's SPACE research team is that theGPS data improves the real-time temperature field and thecross-calibration of the data from a number of satelliteinstruments. This in turn significantly increases the usablequality of the satellite observations. "We are actually able to measure the amount of bending in theGPS beam as it passes through the atmosphere. We can then use thatknowledge to more accurately measure atmospheric temperatures anduse this to improve temperature fields and calibrate othersatellite readings. This extra information, in the data-sparsesouthern hemisphere, is now making our forecasts moreaccurate." Professor Le Marshall said that "since the research wascompleted and began being used in forecasts this year, we estimatethe Bureau is now delivering forecasts of the same accuracy 10hours earlier." He predicts that, as techniques improve, GPS data will also play abigger role in climate monitoring and severe weather warnings. Professor Kefei Zhang, Director of the RMIT SPACE Research Centre,said that GPS as a revolutionary technology for Positioning,Navigation and Timing (PNT), provided a low-cost, powerful means ofprecise measurement of the earth environment. "Weather forecasting is dependent on accurate observations ofthe atmosphere surrounding the whole planet, but there is asignificant lack of ground-based meteorological observationstations. That and the shortage of accurate surface level data fromover the world's oceans and polar regions limits the reliability ofclimate and weather predictions. "This is particularly true for Australia, where people livealong long coastlines but forecasters can only draw on very limitedmeasurements from the middle of the continent and surroundingoceans. "GPS can fill that gap. It's revolutionary technology. It'sthe missing link," Professor Zhang said. The RMIT SPACE Research Centre is a multi-disciplinary andinternational collaboration supported through the FederalGovernment's Australian Space Research Program. I'm an expert responsible for promoting a good online shopping platform China Automobile DVD Players, it contains numerous high-quality items such as China Automobile DVD Players, for more information please visit our website! The e-commerce company in China offers quality products such as China Automobile DVD Players , Volvo DVD GPS, and more. For more , please visit Hyundai DVD Player today!
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