Testing and verifying the wind wave model with an optimized source function |
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| Authors: | V G Polnikov V I Dymov T A Pasechnik I V Lavrenov Z K Abuzyarov S A Sannasiraj |
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| Institution: | (1) Obukhov Institute for Physics of the Atmosphere, Russian Academy of Sciences, Moscow, Russia;(2) Arctic and Antarctic Research Institute, Rosgidromet, St. Petersburg, Russia;(3) Hydrometeocenter of the Russian Federation, Moscow, Russia;(4) Indian Institute of Technology Madras, Chennai, India |
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| Abstract: | With the purpose of revealing the actual advantages of the new source function that was earlier proposed in 5] for use in numerical wind wave models, its testing and verification was carried out by means of modification of the WAM (Cycle-4) model. The verification was performed on the basis of a comparison of the results of wave simulation for a given wind field with the buoy observation data obtained in three oceanic regions. In the Barents Sea, this kind of comparison was made for wave observations from a single buoy with an interval of 6 hours for a period of 3 years. In two regions of the North Atlantic, the comparison was performed for 3 buoys in both regions for observation periods of 30 days with an interval of 1 hour. Estimations of the simulation accuracy were obtained for a series of wind wave parameters, and they were compared with the original and modified WAM model. Advantages of the modified model consisting of the enhancement of the calculation speed by 20–25% and a 1.5- to 2-fold increase in the simulation accuracy for the significant wave height and the mean period were proved. |
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