کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1725181 | 1520678 | 2016 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of HIPOCAS and ERA wind and wave reanalyses in the North Atlantic Ocean
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two pairs of comparisons between HIPOCAS and ERA reanalysis are performed in this paper. HIPOCAS is a hindcast developed under a European project and it is the result of the wave model WAM forced by REMO surface winds in the North Atlantic. ERA-40 and ERA-Interim were developed by the European Centre for Medium-Range Weather Forecasts, ECMWF, adopting the wave model WAM, covering the whole globe. A quick introductory comparison of HIPOCAS against ERA-40 is initially provided, which are hindcasts produced almost at the same time with common features. The main analysis covers a detailed comparison of HIPOCAS and ERA-Interim, which can be considered an update of ERA-40, followed by a comparison of both datasets against satellite data. Wind speed and significant wave height are the two variables considered. In order to compare the described wind and wave datasets, a common period and area were defined, with latitudes between 20° and 68° North and longitudes between 50° and 0° West, from 1979 till 2001. The differences for the whole dataset and for extreme events (upper percentiles) are calculated. A spatial and time integration is applied to determine where and when the main differences between hindcasts occur. The results show a relatively good agreement between HIPOCAS and both ERA-40 and ERA-Interim reanalysis for calm and moderate weather conditions. There is a large increase of the differences under extreme conditions, occurring mainly during the winter at mid-high latitudes. ERA-Interim presents the best results against measurements but suggests some underestimation under extreme events at mid-high latitudes. HIPOCAS tends to overestimate the measurements and over-predict both ERA reanalyses in the range of extreme values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 112, 15 January 2016, Pages 320-334
Journal: Ocean Engineering - Volume 112, 15 January 2016, Pages 320-334
نویسندگان
R.M. Campos, C. Guedes Soares,