Asian summer monsoonal variations during the Holocene revealed by Huguangyan maar lake sediment record

Seasonal variability in concentrations and fluxes of glycerol dialkyl glycerol tetraethers in Huguangyan Maar Lake, SE China: Implications for the applicability of the MBT–CBT paleotemperature proxy in lacustrine settings

“…By contrast, during summer, the lake is strongly stratified due to high air temperatures and weak winds (Wang et al, 2008(Wang et al, , 2012. When the summer monsoon is strong, the climate in Zhanjiang area is wet and the lake level is high (Wu et al, 2012). The climate in this area is highly seasonal, with 90% of the total mean annual precipitation of 1567 mm falling between April and October , while the cold and dry season lasts from November to March.…”

“…The Huguangyan Maar Lake (HML) is situated at the confluence of the East Asian monsoon, which is influenced by the climate regime of northern cold fronts originating from the Siberian anti-cyclone with the Southwest Asian summer monsoon from the Indian Ocean and the Southeast summer monsoon from the Pacific Ocean (Yancheva et al, 2007;Wu et al, 2012). Its geographical, geomorphological and hydrological features, and high-resolution well bedded sediments have a great potential for the investigation of the evolution of Asian monsoon (Fuhrmann et al, 2003;Mingram et al, 2004;Wang et al, 2007;Yancheva et al, 2007;Wu et al, 2012) in the subtropical South China.…”

“…Its geographical, geomorphological and hydrological features, and high-resolution well bedded sediments have a great potential for the investigation of the evolution of Asian monsoon (Fuhrmann et al, 2003;Mingram et al, 2004;Wang et al, 2007;Yancheva et al, 2007;Wu et al, 2012) in the subtropical South China. For this region therefore, the development of new proxies and the integration of multiple independent approaches for reliable continental temperature estimates are of great importance.…”

Climate-driven changes to dune activity during the Last Glacial Maximum and deglaciation in the Mu Us dune field, north-central China

“…More widespread stabilization in the interior of the Mu Us dune field between 15 and 10 ka is unlikely (Lu et al, 2005(Lu et al, , 2013bMason et al, 2009), because the DG climate in this region with relatively low precipitation could probably not favor enough expansion of vegetation to stabilize the dunes extensively (Xiao et al, 2004;Lu et al, 2013a). Thus, fully active dunes were still dominant in the major internal part of the dune field during the DG, as during the LGM.…”

“…The preparation and procedures for AMS 14 C dating of the sample from the ZJ section were as described in Wu et al (2012), and OxCal 4.0.1 beta software was used for calibration. Grain size distribution of sediment samples was analyzed using a Malvern 2000G laser diffraction particle analyzer after removal of organic matter and carbonate, following a preparation procedure to ensure complete disaggregation of the individual grains (Lu and An, 1997).…”