Mineral dust plays a key role in both local and global climates. At high latitudes, atmospheric dust can affect ice-nuclei formation, and surface dust can reduce the albedo as well as increase subsequent ice melting. As a proxy for past climate, mineral dust is preserved in ice cores, but few studies have examined deposited dust in ice cores during the Anthropocene, especially after 2000. We measured dust concentrations in an ice core at the southeastern dome in Greenland (SE-Dome), and reconstructed the annual and seasonal dust fluxes during 1960–2014. We find the annual average flux during 1960–2014 to be 34.8 ± 13.5 mg m⁻² yr⁻¹, a value about twice that of ice cores further inland. The more recent part of that period, 2000–2014, has the higher annual flux of 46.6 ± 16.2 mg m⁻² yr⁻¹. The annual and autumn dust fluxes highly correlate with air temperature in Tasiilaq (r = 0.61 and 0.50, respectively), a coastal location in southeastern Greenland. Our results suggest that the local dust emissions at the coastal region are increasing due to a decreasing seasonal snow-cover area arising from coastal Greenland warming after 2000.

矿物粉尘在当地和全球气候中都起着关键作用。在高纬度地区，大气尘埃会影响冰核的形成，地表尘埃会减少反照率并增加随后的冰融化。作为过去气候的替代指标，矿物尘埃保留在冰芯中，但是很少有人研究在人类世时期，特别是2000年以后检查冰芯中的沉积尘埃。我们测量了格陵兰岛东南穹顶（SE-圆顶），并重建了1960–2014年期间的年度和季节性粉尘通量。我们发现1960-2014年期间的年平均通量为34.8±13.5 mg m ^-2 yr ^-1，约为内陆冰芯的两倍。在此期间的最近部分（2000-2014年），年通量较高，为46.6±16.2 mg m⁻²年− ^1年。在格陵兰东南部沿海地区的塔西拉格（Tasiilaq），年尘流量和秋尘通量与气温高度相关（分别为r = 0.61和0.50）。我们的研究结果表明，由于2000年后格陵兰岛沿海地区变暖导致季节性积雪面积减少，沿海地区的当地粉尘排放量正在增加。