Global and Regional 500 Year Temperature Reconstructions Abram, N.J.; McGregor, H.V.; Tierney, J.E.; Evans, M.N.; McKay, N.P.; Kaufman, D.S.; Thirumalai, K. Abram, N.J. McGregor, H.V. Tierney, J.E. Evans, M.N. McKay, N.P. Kaufman, D.S. Thirumalai, K. Air Temperature Reconstruction PAGES 2k Network earth science/paleoclimate/climate reconstructions (surface air temperature,null,null,degree Celsius,null,climate reconstructions,null,null,N,null) earth science/paleoclimate/paleoclimatic modeling (surface air temperature,null,null,degree Celsius,null,paleoclimatic modeling,null,null,N,null) earth science/paleoclimate/climate reconstructions (sea surface temperature,null,null,degree Celsius,null,climate reconstructions,null,null,N,null) earth science/paleoclimate/climate reconstructions (age,null,null,year Common Era,null,climate reconstructions,null,null,N,null) earth science/paleoclimate/paleoclimatic modeling (sea surface temperature,null,null,degree Celsius,null,paleoclimatic modeling,null,null,N,null) earth science/paleoclimate/reconstructions (Global>LATITUDE >LONGITUDE ) The evolution of industrial-era warming across the continents and oceans provides a context for future climate change and is important for determining climate sensitivity and the processes that control regional warming. Here we use post-ad 1500 palaeoclimate records to show that sustained industrial-era warming of the tropical oceans first developed during the mid-nineteenth century and was nearly synchronous with Northern Hemisphere continental warming. The early onset of sustained, significant warming in palaeoclimate records and model simulations suggests that greenhouse forcing of industrial-era warming commenced as early as the mid-nineteenth century and included an enhanced equatorial ocean response mechanism. The development of Southern Hemisphere warming is delayed in reconstructions, but this apparent delay is not reproduced in climate simulations. Our findings imply that instrumental records are too short to comprehensively assess anthropogenic climate change and that, in some regions, about 180 years of industrial-era warming has already caused surface temperatures to emerge above pre-industrial values, even when taking natural variability into account. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Abram, N.J. Investigator : McGregor, H.V. Investigator : Tierney, J.E. Investigator : Evans, M.N. Investigator : McKay, N.P. Investigator : Kaufman, D.S. Investigator : Thirumalai, K. 2016-08-24 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20083 https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_inputdata.zip https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_code.zip https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_inputdata.zip https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_code.zip English https://www.ncdc.noaa.gov/paleo/study/20083 https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_inputdata.zip https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/AbrametalPAGES2k2016_code.zip Nerilie J. Abram, Helen V. McGregor, Jessica E. Tierney, Michael N. Evans, Nicholas P. McKay, Darrell S. Kaufman, Kaustubh Thirumalai, Belen Martrat, Hugues Goosse, Steven J. Phipps, Eric J. Steig, K. Halimeda Kilbourne, Casey P. Saenger, Jens Zinke, Guillaume Leduc, Jason A. Addison, P. Graham Mortyn, Marit-Solveig Seidenkrantz, Marie-Alexandrine Sicre, Kandasamy Selvaraj, Helena L. Filipsson, Raphael Neukom, Joelle Gergis, Mark A.J. Curran, Lucien von Gunten2016Early onset of industrial-era warming across the oceans and continentsNature5367617411-41810.1038/nature19082http://www.nature.com/nature/journal/v536/n7617/full/nature19082.html START YEAR: 1500 AD * END YEAR: 2014 AD -180 -90 180 90