Which artist is famously associated with plein air painting?

Claude Monet is famously associated with plein air painting, which refers to the practice of painting outdoors to capture the natural light and atmosphere of a scene. Monet was a central figure in the Impressionist movement, which emphasized the effects of light and color. His artworks often feature scenes from nature and everyday life, painted directly from observation, which is a hallmark of plein air techniques.

Monet's approach involved quick brush strokes and a focus on capturing the momentary effects of light, leading to vibrant depictions of landscapes, gardens, and water scenes. His dedication to painting en plein air allowed him to explore the changing qualities of light and weather, which are evident in iconic works like "Impression, Sunrise" and his series on water lilies.

In contrast, the other artists listed have different associations: Picasso is best known for his contributions to Cubism, van Gogh's style incorporates expressive color and dynamic brushwork but is not specifically focused on plein air, and Pollock is renowned for his Abstract Expressionist drip paintings created in the studio rather than outdoors.