Wind regimes and their relation to synoptic variables using self-organizing maps
Wind regimes and their relation to synoptic variables using self-organizing maps
复制标题
使用自组织地图的风况及其与天气变量的关系
DOI：
10.5194/asr-15-1-2018
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发表时间：
2018
影响因子：
--
通讯作者：
S. Berkovic
中科院分区：
文献类型：
--
作者：
S. Berkovic
抽象的。本研究验证了自组织映射（SOM）方法的能力
直接定义整个以色列期间众所周知的风况，
除夏季外，每年12：00 UTC。这
程序可能会在其他时间应用，并与未来高度相关
自动气候分析及应用。调查是通过分析地面风测量，
53个以色列气象服务站。天气学与气候学的关系
从ECMWF的平均值中揭示了变量和风况
ERA-INTERIM再分析变量为每个SOM风况。检查风况及其平均位势异常，
表明风场与气压异常梯度有关，
而不是特定的等压线模式。两种主要风况-强风
西部和强大的东部或北方-是众所周知的，
地区根据季节的政权的频率进行了验证。
强大的东部政权在冬季占主导地位，而强大的西部政权则在冬季占主导地位。
政权在所有季节频繁。
Abstract. This study exemplifies the ability of the self-organizing maps (SOM) method
to directly define well known wind regimes over Israel during the entire
year, except summer period, at 12:00 UTC. This
procedure may be applied at other hours and is highly relevant to future
automatic climatological analysis and applications. The investigation is performed by analysing surface wind measurements from
53 Israel Meteorological Service stations. The relation between the synoptic
variables and the wind regimes is revealed from the averages of ECMWF
ERA-INTERIM reanalysis variables for each SOM wind regime. The inspection of wind regimes and their average geopotential anomalies has
shown that wind regimes relate to the gradient of the pressure anomalies,
rather than to the specific isobars pattern. Two main wind regimes – strong
western and the strong eastern or northern – are well known over this
region. The frequencies of the regimes according to seasons is verified.
Strong eastern regimes are dominant during winter, while strong western
regimes are frequent in all seasons.