Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of the concentrations of Nss-Ca2+ (A) [41], the dust mass (B) in the NEEM ice core from this study, the median grain size in the Gulang record (C) [39] and the Xifeng dust fluxes (D) [38]. The dotted lines show the correlation of 24 D-O cycles between the NEEM ice core and the Gulang loess.
