<div class="eI0"> <div class="eI1">模å¼:</div> <div class="eI2"><h2><a href="http://www.meteofrance.fr/" target="_blank" target="_blank">Arpège</a>(Action de Recherche Petite Echelle Grande Echelle) from Meteo France</h2></div> </div> <div class="eI0"> <div class="eI1">æ›´æ–°:</div> <div class="eI2">4 times per day, from 08:00, 14:00, 20:00, and 00:00 UTC</div> </div> <div class="eI0"> <div class="eI1">æ ¼æž—å°¼æ²»å¹³æ—¶:</div> <div class="eI2">12:00 UTC = 20:00 北京时间</div> </div> <div class="eI0"> <div class="eI1">Resolution:</div> <div class="eI2">0.1° x 0.1° (欧洲)<br> 0.5° x 0.5°</div> </div> <div class="eI0"> <div class="eI1">å‚é‡:</div> <div class="eI2"><font face="夹å‘ç °" size="2"> 850百帕风:<br>850百帕ç‰åŽ‹é¢ä¸Šçš„风 </div> </div> <div class="eI0"> <div class="eI1">æè¿°:</div> <div class="eI2"> 这幅图显示æ¯ä¸ªæ¨¡å¼æ ¼ç‚¹(模å¼æ ¼è·çº¦ä¸º80公里)850百帕ç‰åŽ‹é¢ä¸Šæ¨¡å¼è®¡ç®—çš„å¹³å‡é£ŽçŸ¢é‡ã€‚ 850百帕ç‰åŽ‹é¢é«˜åº¦åœ¨1500米左å³ã€‚人们å¯ä»¥ä»Ž850百帕ä½åŠ¿é«˜åº¦å’Œæ¸©åº¦å›¾ä¸Šè¯»å‡ºå…¶å½“å‰é«˜ 度。这幅图对那些在1500米以下飞行的滑翔è¿åŠ¨çˆ±å¥½è€…å’Œçƒæ°”çƒé©¾é©¶å‘˜å分有用。 (<a href="javascript:NeuFenster()">风计算器</a>)<br><br> </div> </div> <div class="eI0"> <div class="eI1">Arpège:</div> <div class="eI2"><a href="http://www.cnrm.meteo.fr/spip.php?article121/" target="_blank">Arpège</a> <br> ARPEGE uses a set of primitive equations with a triangular spectral truncation on the horizontal, with a variable horizontal resolution, with a finite elements representation on the vertical and a “sigma-pressure†hybrid vertical coordinate. It also utilizes a temporal two time level semi-implicit semi-lagrangian scheme. The horizontal resolution of the ARPEGE model is around 7.5km over France and 37km over the Antipodes. It has 105 vertical levels, with the first level at 10m above the surface and an upper level at around 70km. Its time step is of 360 seconds.</br> </div></div> <div class="eI0"> <div class="eI1">NWP:</div> <div class="eI2">Numerical weather prediction uses current weather conditions as input into mathematical models of the atmosphere to predict the weather. Although the first efforts to accomplish this were done in the 1920s, it wasn't until the advent of the computer and computer simulation that it was feasible to do in real-time. Manipulating the huge datasets and performing the complex calculations necessary to do this on a resolution fine enough to make the results useful requires the use of some of the most powerful supercomputers in the world. A number of forecast models, both global and regional in scale, are run to help create forecasts for nations worldwide. Use of model ensemble forecasts helps to define the forecast uncertainty and extend weather forecasting farther into the future than would otherwise be possible.<br> <br>Wikipedia, Numerical weather prediction, <a href="http://zh.wikipedia.org/wiki/數值天氣é å ±" target="_blank">http://zh.wikipedia.org/wiki/數值天氣é å ±</a>(as of Feb. 9, 2010, 20:50 UTC).<br> </div></div> </div>