首页> 外文会议>Earth observation for ocean-Atmosphere interactions science >IMPACT OF THE SEA SURFACE TEMPERATURE ON THE ATMOSPHERE RESPONSE: MONTHLY FORECASTING OF THE MADDEN-JULIAN OSCILLATION
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IMPACT OF THE SEA SURFACE TEMPERATURE ON THE ATMOSPHERE RESPONSE: MONTHLY FORECASTING OF THE MADDEN-JULIAN OSCILLATION

机译:海面温度对大气响应的影响:马登-朱利安震荡的月度预报

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The ECMWF monthly forecasting system is used for thernforecast of the Madden-Julian Oscillation (MJO) eventrnof the winter 1992-1993. The impact of the oceanatmosphererncoupling on the MJO forecast skill is assessedrnin parallel with sensitivity tests on the temporalrnresolution (daily, weekly and monthly) of Sea SurfacernTemperature (SST) forcing fields. The coupling to thernocean provides a better MJO forecast than the current operationalrnsystem that persists SST anomalies. The couplingrnalso appears as a good alternative to forcing byrnmontlhy SST but it is still not better than forcing byrnweekly or daily SST, probably because of the drift ofrnthe ocean model. Forcing with weekly ERA interim SSTrnprovides a better forecast than forcing with OSTIA dailyrnSST. This unexpected result raises the question how thernmean state and the time variability of the ocean surfacernmatter for the MJO forecast.
机译:ECMWF月度预报系统用于1992-1993年冬季Madden-Julian涛动(MJO)事件的预报。在对海表温度(SST)强迫场的时间分辨率(每日,每周和每月)进行敏感性测试的同时,评估了海洋-大气耦合对MJO预报技能的影响。与持续存在SST异常的当前作战系统相比,与海洋生物的耦合提供了更好的MJO预测。耦合也似乎是强行施加海表温度的良好选择,但仍不比强行施加每周或每天的海表温度更好,这可能是由于海洋模型的漂移造成的。与每周OSTIA每日SST强制相比,每周ERA临时SSTrn强制提供更好的预测。这个出乎意料的结果提出了一个问题,即对于MJO预报而言,海平面的平均状态和时间变化如何。

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