Considerable work has gone into developing high-precision radiocarbon (¹⁴C) chronologies for the southern Levant region during the Late Bronze to Iron Age/early Biblical periods (∼1200–600 BC), but there has been little consideration whether the current standard Northern Hemisphere ¹⁴C calibration curve (IntCal13) is appropriate for this region. We measured ¹⁴C ages of calendar-dated tree rings from AD 1610 to 1940 from southern Jordan to investigate contemporary ¹⁴C levels and to compare these with IntCal13. Our data reveal an average offset of ∼19 ¹⁴C years, but, more interestingly, this offset seems to vary in importance through time. While relatively small, such an offset has substantial relevance to high-resolution ¹⁴C chronologies for the southern Levant, both archaeological and paleoenvironmental. For example, reconsidering two published studies, we find differences, on average, of 60% between the 95.4% probability ranges determined from IntCal13 versus those approximately allowing for the observed offset pattern. Such differences affect, and even potentially undermine, several current archaeological and historical positions and controversies.

在晚期青铜器至铁器时代/早期圣经时期（约1200-600 BC）期间，为黎凡特南部地区开发高精度放射性碳（¹⁴ C）年表，已进行了大量工作，但很少考虑当前的标准北方半球¹⁴ C校准曲线（IntCal13）适用于该区域。我们测量了约旦南部从公元1610年到1940年的¹⁴ C年龄的日历年轮，以调查当代¹⁴ C水平并将其与IntCal13进行比较。我们的数据显示平均偏移量约为19 ¹⁴C年，但更有趣的是，这种偏移的重要性似乎随时间而变化。尽管相对较小，但这种偏移量与南部黎凡特的高分辨率¹⁴ C年代学（考古和古环境）都息息相关。例如，重新考虑两项已发表的研究，我们发现从IntCal13确定的95.4％概率范围与大约允许观察到的偏移模式的概率范围之间，平均有60％的差异。这种差异影响甚至可能破坏了一些当前的考古和历史立场和争议。