Turbidity Trends at Tucson, Arizona

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Science  08 Sep 1972:
Vol. 177, Issue 4052, pp. 882-883
DOI: 10.1126/science.177.4052.882


Variations in atmospheric turbidity at Tucson, Arizona, since 1956 are similar to those at Mauna Loa in Hawaii, especially before January 1970. The turbidity at both locations increased markedly in 1963 after the Bali eruption. Since January 1970, the turbidity has returned to its pre-1963 level at Mauna Loa, but has remained relatively high at Tucson.