斯佩莱奥瑟姆
泥炭
西半球暖池
环境科学
木炭
强迫(数学)
干燥
热带气旋
大气科学
气候学
海洋学
地理
地质学
厄尔尼诺南方涛动
生物
考古
化学
洞穴
有机化学
免疫学
作者
Masanobu Yamamoto,Tetsuhiro Kikuchi,Hiromichi Sakurai,Ryoma Hayashi,Osamu Seki,Takayuki Omori,Abdullah Sulaiman,Hasrizal Shaari,Mohd Zulhilmy Abdullah,Lulie Melling
摘要
Abstract The forcing of multicentennial climate variability in the Western Pacific Warm Pool (WPWP) region is not fully understood. Here, we generated 6‐kyr‐long continuous charcoal records from five peatlands in Borneo. Every several hundred years, peaks of charcoal influx were identified in the composite record, indicating that the peatlands repeatedly experienced dry conditions and wildfires. Major fire events were identified at ∼5.4, 4.7, 4.4, 3.7, 3.2, 2.7, 2.4, 2.2, 1.7, 1.1, 0.6, and 0.3 ka. Most of these coincided with the maxima of Borneo speleothem δ 18 O and occurred in the high solar activity periods following the solar minima. This suggests that the higher solar activity decreased rainfall, increasing dryness and wildfire frequency. This result challenges the hypothesis that high solar activity intensifies atmospheric convection in the WPWP area.
科研通智能强力驱动
Strongly Powered by AbleSci AI