Ключевые слова: air, atmosphere, azure, background, beautiful, beauty, blue, blue sky and clouds, blue sky backdrop, bright, clear, clear sky, climate, cloud, clouds, cloudscape, cumulus, day, day sky, daylight, empty, freedom, heaven, high, light, meteorology, natural, nature, open, outdoor, peaceful, peaceful scene, scenic, serene, sky, sky background, skyscape, space, spring, stratosphere, summer, sunny, tranquil, weather, white,