Surface air "temperature change" for the globe, 1880-1985. Degrees Celsius. #"Temperature change" actually means temperature against an arbitrary zero #point. From James Hansen and Sergej Lebedeff, "Global Trends of Measured #Surface Air Temperature", `Journal of Geophysical Research`, Vol. 92, No. #D11, pages 13,345-13,372, November 20, 1987. -.40 -.37 -.43 -.47 -.72 -.54 -.47 -.54 -.39 -.19 -.40 -.44 -.44 -.49 -.38 -.41 -.27 -.18 -.38 -.22 -.03 -.09 -.28 -.36 -.49 -.25 -.17 -.45 -.32 -.33 -.32 -.29 -.32 -.25 -.05 -.01 -.26 -.48 -.37 -.20 -.15 -.08 -.14 -.13 -.12 -.10 .13 -.01 .06 -.17 -.01 .09 .05 -.16 .05 -.02 .04 .17 .19 .05 .15 .13 .09 .04 .11 -.03 .03 .15 .04 -.02 -.13 .02 .07 .20 -.03 -.07 -.19 .09 .11 .06 .01 .08 .02 .02 -.27 -.18 -.09 -.02 -.13 .02 .03 -.12 -.08 .17 -.09 -.04 -.24 -.16 -.09 .12 .27 .42 .02 .30 .09 .05