<div class="eI0"> <div class="eI1">模å¼:</div> <div class="eI2"><h2>Times Series from the GFS Ensemble</h2></div> </div> <div class="eI0"> <div class="eI1">æ›´æ–°:</div> <div class="eI2">2 times per day, from 10:00 and 23:00 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">1.0° x 1.0°</div> </div> <div class="eI0"> <div class="eI1">å‚é‡:</div> <div class="eI2"><font face="夹å‘ç °" size="2"> z T 850 hPa </div> </div> <div class="eI0"> <div class="eI1">æè¿°:</div> <div class="eI2"> 850百帕ä½åŠ¿é«˜åº¦(ä½åŠ¿ä»€ç±³ï¼Œå®žçº¿)。<br> 850百帕温度(°C,彩色虚线)。<br><br> 这幅图帮您识别用于确定锋é¢çš„ç‰æ¸©çº¿å¯†é›†åŒºã€‚ æ¤å¤–ï¼Œæ‚¨è¿˜èƒ½æ ¹æ® æ¨¡å¼è®¡ç®—出的850百帕温度粗略地估计地é¢ä»¥ä¸Š2米的最高温度。 ä¸è¿‡ï¼Œå½“出现(冬å£)逆温时,这ç§æ–¹æ³•ä¸é€‚用。<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 class="eI0"> <div class="eI1">模å¼:</div> <div class="eI2"><h2>Times Series from the GFS Ensemble</h2></div> </div> <div class="eI0"> <div class="eI1">æ›´æ–°:</div> <div class="eI2">2 times per day, from 10:00 and 23:00 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">1.0° x 1.0°</div> </div> <div class="eI0"> <div class="eI1">å‚é‡:</div> <div class="eI2">Geopotential height (tens of m) at 850 hPa (solid line) and Temperature (°C) at 850 hPa (coloured, dashed line) </div> </div> <div class="eI0"> <div class="eI1">æè¿°:</div> <div class="eI2"> This chart helps to identify areas of densely packed isotherms (lines of equal temperature) indicating a front. Aside from this you can use the modeled temperature in 850 hPa (5000 ft a.s.l.) to make a rough estimate on the expected maximum temperature in 2m above the ground. However, this method does not apply to (winter) inversions. </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>