~The difference between the two ice profiles help explain thermodynamic action.
Astounding as it sounds, thin sea ice raises the horizon a lot as soon as it forms. Historically, there has been well known weather the day sea ice forms, the clouds clear along with a common impression of much colder temperatures all around coastal areas. For obvious reasons thermal variances are difficult to study when sea water turns to sea ice, although flux studies have been done mainly after sea ice is solid enough to put equipment on it.
A common problem with very new sea ice analysis is of course caused by fog or clouds. Natural cooling during autumn causes a great deal of moisture obscurations. Fortunately 2014 had a brief respite just about the right time, although not perfect, the photographic repetition of 2013 freeze-up was achieved.
Barrow Strait Ice is usually more chaotic than McClure Strait , but concurring to the demo above the Western view of the Northwest passage had similar refraction effects but on different days:
Thin sea ice main feature as giving as high or higher horizon compared with thicker spring time sea ice at noon must be due in large part to thermal long wave heat from the the summer warmed sea causing a weak inversion, convection stops the moment the sea surface becomes crystalline, the insulation properties of very thin sea ice is simply spectacular. Sea ice conduction in direct contact with surface air plays a different role in autumn, likely slightly warming the interface (if at all) as opposed to cooling the snow/ice with air interface in spring especially in the evening. The missing core of cold ice is replaced by thermally "hot" sea water reducing evening inversion amplification. But this feature has been observed to be short lived, one week or so from onset the stable to slightly lowering horizon in evening changes to heightening as a top of ice cold core becomes more and more resilient and effectively cools the interface faster after warming from the autumnal noon Polar sun. Conduction from very thin sea ice appears to be very poor, not powerful enough to warm interface air by causing and adiabatic profile which would lower the horizon below astronomical horizon height. WD May17,2015