************************************************************* *** Source: Thomas J. Conway *** *** Pieter Tans *** *** Lee S. Waterman *** *** National Oceanic & Atmospheric Administration *** *** Climate Monitoring and Diagnostics Laboratory *** *** 325 Broadway *** *** Boulder, Colorado 80303 *** ************************************************************* 1980 340.4 341.3 341.2 339.6 338.3 338.3 338.5 338.5 338.6 338.9 339.2 339.8 339.4 1981 341.0 342.0 342.2 340.9 339.1 339.0 338.9 338.5 338.7 339.4 339.9 340.4 340.0 1982 341.2 342.4 342.6 341.1 339.9 339.8 339.6 339.8 339.7 339.5 339.9 340.4 340.5 1983 340.4 341.6 343.3 342.2 340.2 339.6 339.3 339.7 340.0 -99.99 -99.99 -99.99 253.0 1984 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1985 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1986 345.3 346.6 346.8 345.7 345.5 346.3 346.4 346.3 346.6 347.2 347.0 347.0 346.4 1987 348.0 348.7 349.3 349.6 348.9 348.2 348.4 349.2 348.3 347.1 348.8 350.3 348.7 1988 350.5 351.2 351.2 349.9 349.0 349.6 350.6 350.9 351.3 350.7 349.1 349.3 350.3 1989 352.0 353.9 353.4 352.1 350.8 350.9 351.9 352.1 352.1 352.0 352.2 353.3 352.2 1990 354.5 355.2 355.2 354.0 352.6 352.7 353.2 352.7 352.1 352.4 352.7 353.1 353.4 1991 354.0 354.5 354.2 353.0 352.8 353.4 353.6 353.5 353.6 354.3 355.0 354.9 353.9 1992 354.8 355.5 356.4 356.0 354.1 352.8 353.8 354.7 354.4 354.9 355.0 355.0 354.8