TY - GEN

T1 - WIND DATA REANALYSIS AS THE INPUT DATA FOR WAVE CLIMATE SIMULATION. СASPIAN SEA AS AN EXAMPLE

AU - Лопатухин, Леонид Иосифович

AU - Яицкая, Наталья Александровна

PY - 2017/9/11

Y1 - 2017/9/11

N2 - The basic stage of the modern approach to calculation of a wind wave climate (long-term probability) includes the database formation using numerical hydrodynamic models. The input to such models is atmospheric pressure or wind velocity at some height over sea surface. This information extracted from the reanalysis data. Initially reanalysis intended for research of global processes without description of the extreme phenomena. For this reason, for calculations of a wave climate the reanalysis data have to be corrected. The approach to correction of the reanalysis data and some results are presented. It is shown that for speed of a wind less than 15 m/s the reanalysis as a whole overestimates values in comparison with the measurements, and for speed more than 15 m/s − underestimates. Therefore, for restoration by means of mathematical modelling of a full picture of wave fields including storm situations, it is necessary to apply multistage procedure of correction of the data: separately for each region of the sea and further for storm situations for all sea.

AB - The basic stage of the modern approach to calculation of a wind wave climate (long-term probability) includes the database formation using numerical hydrodynamic models. The input to such models is atmospheric pressure or wind velocity at some height over sea surface. This information extracted from the reanalysis data. Initially reanalysis intended for research of global processes without description of the extreme phenomena. For this reason, for calculations of a wave climate the reanalysis data have to be corrected. The approach to correction of the reanalysis data and some results are presented. It is shown that for speed of a wind less than 15 m/s the reanalysis as a whole overestimates values in comparison with the measurements, and for speed more than 15 m/s − underestimates. Therefore, for restoration by means of mathematical modelling of a full picture of wave fields including storm situations, it is necessary to apply multistage procedure of correction of the data: separately for each region of the sea and further for storm situations for all sea.

KW - wind fields, reanalysis, hydrometeorological stations, winds at coastal stations, regression, Caspian Sea

U2 - 10.5593/sgem2017/31/S12.101

DO - 10.5593/sgem2017/31/S12.101

M3 - Conference contribution

SN - 978-619-7408-04-1

VL - 17, issue 31

SP - 801

EP - 806

BT - 17th International Multidisciplinary Scientific GeoConference SGEM 2017

PB - STEF92 Technology Ltd.

CY - Болгария

ER -