Hudson Valley Fog Environments

摘要: Abstract Observations of 14 cases radiation fog in the Hudson River valley New York State are presented. Our emphasis is to connect prediction problem mechanisms nocturnal boundary layer that influence heat and moisture balances. Surface fogs distinguished by difference dominant terms saturation specific humidity deficit budget. Fogs persist longer than approximately 30 minutes most frequently thicker 50 m. The ultimate depth which grows shown be determined initial conditions at sunset subsequent evolution winds layer, as well surface transports radiative cooling. Estimates budget Two new phenomena identified: 1) A jump occurring during early evening transition shortens time required reach saturation; 2) along-valley jetlike with maxima near 10...