Sixty year10Be record from Greenland and Antarctica

We report in this study the distribution of¹⁰Be in the top 40 m of the Renland ice core (East Greenland) and in a 30 m long core from DML (Dronning Maud Land, Antarctica) for the period 1931-1988. The two sites show differences in¹⁰Be content, the Antarctica site showing smaller variance and a lower average¹⁰Be annual flux. Similarly, the average accumulation rate (cm water equivalent year^-1) is higher in the Renland relative to DML. The variability in accumulation (precipitation) rates seems to explain part of the difference in¹⁰Be flux between the two polar sites. Cyclic fluctuations of¹⁰Be flux correlate with the 11-year sunspot number and cosmic ray intensity than with the aa index (perturbation of the geomagnetic activity by the solar wind). Our data corroborate¹⁰Be cyclic fluctuation pattern from the Dye 3 ice core and confirm a promising potential for correlation of global and local events.