(Table 1) CPI, ACL, ratio between n-C31 and n-C29 alkane, concentration of summed n-C29 and n-C31 alkane, stable δ¹³C and dD composition of n-C29 and n-C31 alkane and dD of precipitation, Italien N-S transect

MV: mean value.SD: standard deviation.AM: anual mean.OIPC: Data from Online Isotope in Precipitation Calculator (OIPC), http://wateriso.eas.purdue.edu/waterisotopes/These samples represent the top 1 cm of sediments.

本数据集相关参数说明如下：MV为均值（mean value），SD为标准差（standard deviation），AM为年平均（anual mean）。OIPC指降水在线同位素计算器（Online Isotope in Precipitation Calculator, OIPC），其数据来源网址为http://wateriso.eas.purdue.edu/waterisotopes/。本次采集的样品均取自沉积物表层1 cm处。