polaris.tasks.ocean.realistic_global.forcing.jra55.stress.wind_stress

polaris.tasks.ocean.realistic_global.forcing.jra55.stress.wind_stress(u10, v10, rho_air, min_wind_speed)[source]

Compute wind stress from 10-m winds with the Large and Yeager (2004, 2009) neutral drag law.

The stability correction, the ocean-current-relative wind and any sea-ice drag distinction are deliberately omitted; they are second-order for spinning down fast waves.

Parameters:

  • u10 (numpy.ndarray) – Zonal and meridional 10-m wind components (m s-1)

  • v10 (numpy.ndarray) – Zonal and meridional 10-m wind components (m s-1)

  • rho_air (float) – Air density (kg m-3)

  • min_wind_speed (float) – Wind speeds below this value (m s-1) are clamped, since the 2.70/U term in the drag law diverges as the wind speed goes to zero

Returns:

taux, tauy (numpy.ndarray) – Zonal and meridional wind stress (N m-2)