The Paleogene climate dynamics in Primorye (Far East of Russia) are studied using the Coexistence Approach, based on palaeobotanical records. Palaeobotanical data for the reconstruction comprises 54 palaeofloras covering the early Paleocene to late Oligocene, a time span of ca. 42 myr. The climate inferences obtained are consistent with independently derived global trends, demonstrating general climate cooling through the Paleogene. Cooling is most striking regarding the cold month mean temperature, while the decline of mean annual temperature was less marked. Our data indicate that the Paleogene climate of Primorye was significantly warmer than present, in general, with the warmest conditions prevailing throughout the Eocene and in the southeast of the study area. Negligible Paleogene temperature gradients over Primorye are related to the global pattern and specific regional aspects. The precipitation reconstruction points to conditions considerably wetter than at present. A distinct increase in mean annual precipitation is observed for the early Eocene and persisted throughout the Eocene and Oligocene. The regional rainfall pattern fundamentally differed from modern conditions, and this holds for all studied variables. The inland region and the south of Primorye were significantly more humid than today. The Paleogene pattern was possibly related to a monsoon-type circulation and enhanced landward flow of humid air masses, due to an overall flatter geomorphology of the East Asian coastal areas.

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基于古植物学数据共存分析的俄罗斯远东滨海边疆区古近纪气候动力学

在古植物学记录的基础上，使用共存方法研究了滨海边疆区（俄罗斯远东地区）的古近代气候动力学。重建的古植物学数据包括54个古生物，覆盖了古新世早期至渐新世晚期，时间跨度为。42令吉。得出的气候推论与独立得出的全球趋势一致，表明古近纪的总体气候变冷。关于寒冷月份的平均温度，降温最为明显，而年平均温度的降幅则较小。我们的数据表明，一般而言，滨海边疆区的古近纪气候比现在明显温暖，整个始新世和研究区域东南部普遍存在最温暖的条件。滨海边疆区古近纪温度梯度可忽略不计与全球格局和特定区域方面有关。降水重建表明情况比目前湿得多。始新世早期平均年降水量明显增加，并在整个始新世和渐新世持续存在。区域降雨模式与现代条件根本不同，这适用于所有研究变量。内陆地区和滨海边疆区的湿度明显高于今天。由于东亚沿海地区整体地貌较为平坦，古近纪模式可能与季风型环流和湿空气团向陆流的增加有关。降水重建表明情况比目前湿润得多。始新世早期平均年降水量明显增加，并在整个始新世和渐新世持续存在。区域降雨模式与现代条件根本不同，这适用于所有研究变量。内陆地区和滨海边疆区的湿度明显高于今天。由于东亚沿海地区整体地貌较为平坦，古近纪模式可能与季风型环流和湿空气团向陆流的增加有关。降水重建表明情况比目前湿得多。始新世早期平均年降水量明显增加，并在整个始新世和渐新世持续存在。区域降雨模式与现代条件根本不同，这适用于所有研究变量。内陆地区和滨海边疆区的湿度明显高于今天。由于东亚沿海地区整体地貌较为平坦，古近纪模式可能与季风型环流和湿空气团向陆流的增加有关。这适用于所有研究变量。内陆地区和滨海边疆区的湿度明显高于今天。由于东亚沿海地区整体地貌较为平坦，古近纪模式可能与季风型环流和湿空气团向陆流的增加有关。这适用于所有研究变量。内陆地区和滨海边疆区的湿度明显高于今天。由于东亚沿海地区整体地貌较为平坦，古近纪模式可能与季风型环流和湿空气团向陆流的增加有关。