NWS San Francisco/Monterey COOP station photos
Cotton Region Shelter (CRS)
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| Some cooperative observers use the Cotton Region Shelter (CRS) to record maximum and minimum temperature data. A CRS is typically a wooden structure with louvered sides, a slotted bottom and solid top. It is usually made of pine, painted white, and sits atop a wooden or metal base, 5 to 6 feet above the ground. |
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interesting note: Before the shelter was known as the Cotton Region Shelter it was know as a Stevenson Screen. Thomas Stevenson (1818—1887), joined his father's business in 1846, and as joint engineer to the Commissioners of Northern Lighthouses from 1853 to 1885 he introduced various improvements in lighthouse illumination. He was also deeply interested in meteorology, and in 1864 designed the Stevenson screen widely used for the sheltering of thermometers. He was the father of Robert Louis Stevenson. |
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