Gridded flux data sets provide seamless boundary conditions and verification for regional models of intraseasonal variability. Intraseasonal variability in daily gridded air-sea flux products from reanalysis and satellites are shown for 2011 and verified with ship observations during the DYNAMO intensive observation period.
Numerous ~400 m deep cold pools spreading from atmospheric convection are responsible for 1C temperature anomalies and gusts to 140% of the mean wind speed. These conditions temporarily increase the turbulent heat flux out of the ocean. Evaporation increases from 120 to 180 W/m^2, and sensible heat flux increases from 10 to 30 W/m^2. The structure of the cold pools is inferred from hydrostatic pressure and temperature anomalies measured at the surface. Images of their 3D structures are presented from the NOAA high-resolution Doppler lidar. Fine-scale vertical velocities are sampled by the NOAA motion-stabilized Doppler cloud radar in shelf clouds at the leading edge of cold pools passing over the ship.