Los Angeles Sea-Breeze Thermal Response Field Studies
These findings merit further analysis of the summer sea-breeze spatial and temporal extent in California coasts. The present study focuses on observations of maximum sea-breeze and associated regional thermal response for the South Coast Air Basin in support of the above hypotheses. A field study was configured to observe the sea-breeze intensity and penetration via surface ground stations and wind profilers along the projected transect of the sea-breeze during the summer of 2013. These surface observations are supplemented by airborne remote sensing data collected from flights using the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and the MODIS/ASTER Airborne Simulator (MASTER) sensors at spatial resolutions of 30 and 50 m, respectively. Data clearly reflects that sea-breeze peaks between the hours of 1800-2000 LST, with intensities of 6 m/s at the time of maximum occurrence, consistent with the maximum temperature sea-inland thermal gradients as shown by the ground sensors for and the remote sensing data for the skin temperatures. Horizontal and boundary layer extents were measured in 50-60 km and 1.5 km, respectively as measured by wind profilers and ground station. These results may reflect changes over similarly reported sea-breeze patterns 30-50 years in the past. The presentation will review methods used in the field study, hypothesis validation, and will outline future works for sea-breeze and coastal cooling research.