caa a22 4500 475777441 CHVBK 20180406123635.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1002492412097 doi (NATIONALLICENCE)springer-10.1023/A:1002492412097 A Simple Model Of The Convective Internal Boundary Layer And Its Application To Surface Heat Flux Estimates Within Polynyas [Elektronische Daten] [Ian Renfrew, John King] A simple model of the convective (thermal) internalboundary layer has been developed for climatologicalstudies of air-sea-ice interaction, where in situobservations are scarce and first-order estimates ofsurface heat fluxes are required. It is amixed-layer slab model, based on a steady-statesolution of the conservation of potentialtemperature equation, assuming a balance betweenadvection and turbulent heat-flux convergence. Boththe potential temperature and the surface heat fluxare allowed to vary with fetch, so the subsequentboundary-layer modification alters the fluxconvergence and thus the boundary-layer growth rate.For simplicity, microphysical and radiativeprocesses are neglected. The model is validated using several case studies.For a clear-sky cold-air outbreak over a coastalpolynya the observed boundary-layer heights,mixed-layer potential temperatures and surface heatfluxes are all well reproduced. In other cases,where clouds are present, the model still capturesmost of the observed boundary-layer modification,although there are increasing discrepancies withfetch, due to the neglected microphysical andradiative processes. The application of the model toclimatological studies of air-sea interaction withincoastal polynyas is discussed. Kluwer Academic Publishers, 2000 Cold-air outbreak nationallicence Surface heat fluxes nationallicence Ronne Ice Shelf nationallicence Thermal internal boundary layer nationallicence Renfrew Ian British Antarctic Survey, High Cross, Madingley Road, CB3 0ET, Cambridge, UK aut King John British Antarctic Survey, Cambridge, U.K. aut Boundary-Layer Meteorology Kluwer Academic Publishers 94/3(2000-03-01), 335-356 0006-8314 94:3<335 2000 94 10546 https://doi.org/10.1023/A:1002492412097 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002492412097 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Renfrew Ian British Antarctic Survey, High Cross, Madingley Road, CB3 0ET, Cambridge, UK aut NATIONALLICENCE 700 1- King John British Antarctic Survey, Cambridge, U.K aut NATIONALLICENCE 773 0- Boundary-Layer Meteorology Kluwer Academic Publishers 94/3(2000-03-01), 335-356 0006-8314 94:3<335 2000 94 10546 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer