When I was in the Falkland Islands I remarked (more than once) on the sky. It somehow seemed higher, brighter, and more expansive. I took over a hundred pictures of that sky. Perhaps I should be embarrassed to say that 😉 The Falklands are about 800 miles north of the northern tip of Antarctica and I wondered if there was an effect of light bouncing off the Antarctic snow and ice. Or perhaps there is less pollution to cloud the air way down there where the South Atlantic begins to mix with the Southern Ocean. Whatever the cause, the overall effect was light and clean and fresh.