Ключевые слова: abstract, air, altitude, atmosphere, azure, background, beautiful, beauty, blue, blue sky, bright, clear, climate, cloud, cloudiness, clouds, cloudscape, cloudy, color, covered, day, environment, fluffy, front, heaven, heavens, high, landscape, light, meteorology, nature, nebulosity, nobody, outdoor, outdoors, season, skies, sky, space, stratosphere, summer, sun, sunlight, sunny, weather, white, wind,