atmosphere

https://doi.org/10.1351/goldbook.A00490
Non-SI unit of pressure, \(1\ \text{atm} = 101,325\ \text{Pa}\).
Sources:
Green Book, 2nd ed., p. 112 [Terms] [Book]
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2175 [Terms] [Paper]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 962 [Terms] [Paper]