Evaluation of Meteorological Elements of T639 Model Product in Inner Mongolia
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Abstract:
By evaluating of the ability to predict the 2m temperature and relative humidity, 10m wind direction, and wind speed, as well as T639 model products of two precipitation processes in Inner Mongolia, it is concluded: the forecast accuracy of temperature and relative humidity is better than those of the wind direction and wind speed; the errors of temperature and relative humidity forecast are smaller systematically; the probability of larger wind speed forecast error is high relatively; the precipitation forecast accuracy decreases with the rainfall intensity; in terms of the light rain, the missing alarm rate is lower than the false alarm rate, and the deviations of both overestimated and underestimated rainfall intensity are about the same; the deviations of wind direction are along the clockwise with the angle less than 45°; the temperature deviation is smaller in general, and the distribution of the relative humidity forecast deviation is “＋ － ＋ －” from west to East. The rain falling area is larger for light and moderate rains, and smaller for others. The predicted Lake Baikal cold vortex strength is stronger; the West Pacific subtropical high is weaker; and its influence range is farther north and west.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.