Spatial distribution of extreme wind speeds statistics over the Sakhalin Island based on observations and high-resolution modelling data

Platonov, V.; Kislov, A.

Авторы: Platonov Vladimir, Kislov Alexander
Журнал: IOP Conference Series: Earth and Environmental Science
Том: 386
Номер: 012
Год издания: 2019
Издательство: IOP Publishing
Местоположение издательства: [Bristol, UK], England
DOI: 10.1088/1755-1315/386/1/012052
Аннотация: The analysis of extreme wind speed over the Sakhalin region showed that the set of wind speed extremes obtained from observations is a mixture of two different subsets each neatly described by the Weibull distribution. The empirical tail of pdf diverges from the linearized Weibull model, indicating that another model could fit to the most extreme wind speed data well. Each of these subsets was characterized by parameters k and A, regarded to a coefficient and free terms of linear Weibull model, these samples were labelled as BSs and Ds. The Ds are responsible for the strongest extremes. Mesoscale modelling used to investigate a possibility of models to reproduce these statistical features. A detailed hydrodynamic simulation of major meteorological parameters (1985 – 2014) has been performed for the Sea of Okhotsk and the Sakhalin Island with horizontal resolutions of ~13.2, ~6.6 and ~2.2 km using regional climate model COSMO-CLM. This dataset was utilized for extreme wind speeds statistical structure investigation. Firstly, it was shown, that the model with a detailed spatial resolution is able to reproduce the statistical structure in general and the special mechanism responsible for the generation of the largest of wind extremes. However, model with ~13,2 km resolution couldn’t reproduce some essential parts of wind speed maximum’ statistical properties, underestimating parameters k and A of Ds Weibull distribution significantly. Therefore, this gap could be covered as using higher resolution, as by areal estimation techniques and many others.
Добавил в систему: Платонов Владимир Сергеевич

	ИСТИНА	Войти в систему Регистрация
	ИПМех РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИПМех РАН

Spatial distribution of extreme wind speeds statistics over the Sakhalin Island based on observations and high-resolution modelling dataстатья

Прикрепленные файлы