Sourced datasets for “Enhanced Arctic sea ice melting controlled by larger heat discharge of Mid-Holocene rivers”

The datasets include age models, grain-size parameters, and rare earth elements in cores LV77-36-1 and LV77-41-1, as well as observational data. The age models and sedimentation rate data are shown in sheet1 (“Age model”). The grain sizes and rare earth elements are shown in sheet2 (“Core records”). And the observational data of Siberian river basin (85–180° E, 45–75° N) precipitation, Siberian river runoff and temperature, and East Siberian Arctic Shelf (85–180° E, 65–80° N) and pan-Arctic (0–360° E, 45–90° N) surface air temperature anomalies in May are shown in sheet3 (Observational data).