模式:

HIRLAM(High Resolution Limited Area Model) from the Netherland Weather Service

更新:
4 times per day, from 06:00, 12:00, 18:00, and 00:00 UTC
格林尼治平时:
12:00 UTC = 20:00 北京时间
Resolution:
0.1° x 0.1°
参量:
RH 3000-6000:
地面以上3000到6000米之间的平均相对湿度
描述:
这幅图显示地面以上3000到6000米之间大气层的平均相对湿度。 它能反映出中、高层云在这两个高度之间形成。 在暖脊边缘锋区的反气旋一侧经常会形成这类中、高层云。尤其是它能显示 急流的走向。

HIRLAM:
HIRLAMThe international HIRLAM project is a continuing effort to develop and maintain a state of the art high resolution limited area model for operational use in the participating institutes. By 2001 HIRLAM research developments had outstripped the operational HIRLAM system at KNMI through a substantial increase in model resolution and many improvements in the model formulation.
NWP:
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.

Wikipedia, Numerical weather prediction, http://zh.wikipedia.org/wiki/數值天氣預報(as of Feb. 9, 2010, 20:50 UTC).