The instrumental temperature record shows the fluctuations of the temperature of the atmosphere and the oceans as measured by temperature sensors. Currently, the longest-running temperature record is the Central England temperature data series, that starts in 1659. - http://en.wikipedia.org/wiki/Instrumental_temperature_record
Central England temperature data series beginning in 1659 - Chart: http://en.wikipedia.org/wiki/File:CET_Full_Temperature_Yearly.PNG The longest-running quasi-global record starts in 1850 - Chart: http://en.wikipedia.org/wiki/File:Instrumental_Temperature_Record.png -- Global records databases Currently, the Hadley Centre maintains the HADCRUT3, a global surface temperature dataset,[2] See Hadley Centre Charts: http://www.metoffice.gov.uk/research/hadleycentre/obsdata/ --- NASA maintains GISTEMP, which provides a measure of the changing global surface temperature with monthly resolution for the period since 1880[3] See NASA Charts: Land-Ocean http://data.giss.nasa.gov/gistemp/graphs/Fig.A2.lrg.gif Global Temperature (meteorological stations) http://data.giss.nasa.gov/gistemp/graphs/Fig.A.lrg.gif\ Annual Mean Temperature Change for Three Latitude Bands http://data.giss.nasa.gov/gistemp/graphs/Fig.B.lrg.gif --- ...The NOAA maintains the Global Historical Climatology Network (GHCN-Monthly) data base contains historical temperature, precipitation, and pressure data for thousands of land stations worldwide.[4] NOAA Charts: http://www.ncdc.noaa.gov/gcag/index.jsp --- SUMMARY: *All* of the above data shows global warming over the last century.
