NOAA/WDS Paleoclimatology - Black Sea/Red Sea Oxygen Isotope and Terrigeneous Flux Data During the Holocene.

Paleoenvironmental proxy data for ocean properties, eolian sediment input, and continental rainfall based on high-resolution analyses of sediment cores from the southwestern Black Sea and the northernmost Gulf of Aqaba were used to infer hydroclimatic changes in northern Anatolia and the northern Red Sea region during the last ~7500 years. Pronounced and coherent multicentennial variations in these records reveal patterns that strongly resemble modern temperature and rainfall anomalies related to the Arctic Oscillation/North Atlantic Oscillation (AO/NAO). These patterns suggest a prominent role of AO/NAO-like atmospheric variability during the Holocene beyond interannual to interdecadal timescales, most likely originating from solar output changes.

本研究依托对黑海西南部与最北端亚喀巴湾沉积物岩芯（sediment cores）的高分辨率分析，获取了海洋参数、风成沉积物（eolian sediment）输入及大陆降水相关的古环境代用数据（paleoenvironmental proxy data），以此反演过去约7500年间安纳托利亚北部与红海北部区域的水文气候变化。这些记录中显著且连贯的百年尺度波动，其呈现的变化模式与现今与北极涛动/北大西洋涛动（Arctic Oscillation/North Atlantic Oscillation, AO/NAO）相关的气温与降水异常高度吻合。该模式揭示，在全新世时期，类似AO/NAO的大气变率在年际至年代际以上的时间尺度上扮演了关键角色，其驱动机制极有可能源于太阳活动变化。