NATURE_200205_429
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Skies and Atmospheric Effects

Stormy or serene, overcast or brilliant, looming over a low horizon or shimmering through foliage, the sky offered itself as an endlessly variable and wondrous element of any landscape. Painting manuals urged artists to observe atmospheric effects at different times of day, in different seasons, and under different conditions. The weather transformed not only the appearance of the landscape but also that of the rooftops and buildings that caught the eye of the artist. The burgeoning field of meteorology helped drive the interest; notes on the weather dominate the diaries and correspondence of many artists of the era. The formation of clouds, cotton-like or wispy, were of particular concern. The quality of light and range of colors in the sky at sunrise and sunset could be spectacular, but even mastering the art of gradations of gray was a useful skill, especially for artists working in the north. Landscapes sketched in the absence of the sun could be enchanting, where forms begin to lose their contours in the mist or descending darkness.
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