<div class="eI0"> <div class="eI1">模å¼:</div> <div class="eI2"><h2><a href="http://www.emc.ncep.noaa.gov/GFS/doc.php" target="_blank">GFS</a> (Global Forecast System) Global Model from the "National Centers for Environmental Prediction" (NCEP)</h2></div> </div> <div class="eI0"> <div class="eI1">æ›´æ–°:</div> <div class="eI2">4 times per day, from 3:30, 09:30, 15:30 and 21:30 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">0.5° x 0.5° for forecast time <= 384 hrs</div> </div> <div class="eI0"> <div class="eI1">å‚é‡:</div> <div class="eI2"><font face="夹å‘ç °" size="2"> RH 3000-6000:<br>地é¢ä»¥ä¸Š3000到6000米之间的平å‡ç›¸å¯¹æ¹¿åº¦ </div> </div> <div class="eI0"> <div class="eI1">æè¿°:</div> <div class="eI2"> 这幅图显示地é¢ä»¥ä¸Š3000到6000米之间大气层的平å‡ç›¸å¯¹æ¹¿åº¦ã€‚ 它能åæ˜ å‡ºä¸ã€é«˜å±‚云在这两个高度之间形æˆã€‚ 在暖脊边缘锋区的å气旋一侧ç»å¸¸ä¼šå½¢æˆè¿™ç±»ä¸ã€é«˜å±‚云。尤其是它能显示 急æµçš„èµ°å‘。 <br><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>