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The MWP and LIA in Southern Inner Mongolia

Paper Reviewed
Tian, F., Wang, Y., Liu, J., Tang, W. and Jiang, N. 2017. Late Holocene climate change inferred from a lacustrine sedimentary sequence in southern Inner Mongolia, China. Quaternary International 452: 22-32.

Aiming to improve knowledge of late Holocene climate change in southern Inner Mongolia, Tian et al. (2017) obtained a high-resolution sediment core from a small closed-basin lake, Qrdin Nuur (42.6°N, 115.85°E). By analyzing measurements of the core's grain size, magnetic susceptibility, total nitrogen, total organic carbon, total inorganic carbon and carbonate content, the researchers were able to present a detailed reconstruction of lake conditions and climate change over the past 3700 years. Comparison of the Qrdin Nuur record with a set of previously published climate proxies allowed the authors to further assess regional climate evolution during the late Holocene.

Focusing on the past two millennia, Tian et al. state that there were several multi-centennial temperature oscillations in the record, centered at 1495, 1278, 1029, 912 and 540 calendar years before present. In particular, they note that the most recent warm (AD 1097-1390) and cold (AD 1390-1822) intervals "are linked to the Medieval Warm Period (MWP) and Little Ice Age (LIA), respectively." Thus, real world data once again demonstrate the very real existence of these two climatic periods (MWP and LIA), which climate alarmists would like to erase from the historical temperature record so as to push their false narrative of a monotonic warming of modern temperatures due to rising atmospheric CO2 concentrations, which they additionally (and incorrectly) claim have pushed temperatures to levels that are now unprecedented over the past one to two millennia. Real world data, in contrast, continues to betray those efforts.

Posted 22 February 2018