The IPCC and global warming alarmists have attempted to convince policymakers and the public that modern global warming is unprecedented. In addition, the Climategate scientists claimed that prior climate warming periods only took place in North Atlantic/European regions. Peer-reviewed study after study clearly documents that actual empirical evidence does not support the IPCC and alarmist sceintists claims, as this Chinese data reveals.
"Working with a sediment core extracted from the northern East China Sea...the authors [Li et al.] employed the alkenone paleotemperature index Uk'37...to construct a sea surface temperature history of that region covering the past 3600 years..."the highest temperature was 22.7°C which was recorded at 1.01 cal ka BP," about three-fifths of the way through the Medieval Warm Period...calculate that the peak warmth of the MWP was 2.9°C greater than the mean warmth of the first decade of the 21st century..." [GuangXue Li, XiaoYan Sun, Yong Liu, Torsten Bickert, YanYan Ma 2009: Chinese Science Bulletin]