seasonal forecast

Establishment of the Holt-Winter forecast model could make decomposing study on time series which has linear trend, seasonal change and random wave, and separately estimate the long-term trend, increase of trend and seasonal wave with combining the exponential smoothing.

建立Holt-Winter预测模型，将具有线性趋势、季节变动和随机波动的时间序列进行分解研究，并与指数平滑法相结合，分别对长期趋势、趋势的增量和季节波动做出估计。

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The display panel will show alternately weather forecast of48 hours, present weather conditions, 24 solar terms notice and seasonal weather knowledge.

显示屏每天不仅滚动发布48小时天气预报、即时天气实况、24节气信息，还结合季节有针对性地播发气象知识。

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Establishment and Solution About Forecast Model of City Gas Seasonal Load

城市燃气季节性负荷预测模型的建立及求解

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Finally, the predictability of short term climate forecast is discussed, and it is pointed out that the theoretical limit of the lead time in monthly and seasonal scale prediction is about 6 12 months and that of the accuracy ( P) is 80% 85%.

文中探讨了短期气候预测的可预报性问题，提出月、季尺度气候预测的可预报性的理论上限可能为6～12月，准确率在80%～85%之间。

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Finally, the predictability of seasonal forecast of temperature and precipitation is discussed, including effectiveness and accuracy.

最后, 讨论了季平均气温和季总降水的可预报性问题, 即时效性和准确率.

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