P2C2: Stalagmite Records of Tropical Climate from Northern Borneo: Interglacial and Termination Structure Across Several Glacial Cycles

P2C2：北婆罗洲热带气候的石笋记录：跨多个冰川周期的间冰期和终止结构

• 批准号: 0903099
• 负责人: Jess Adkins
• 金额: $ 38.9万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0903099&HistoricalAwards=false
• 关键词: P2C2; Stalagmite; Records; Tropical; Climate

Funding is provided to build upon previous research on paleoclimatology from speleothems in Borneo to extend their research from caves in this region and investigate three key climate questions: 1) What is the response of precipitation in the tropics to changes in the amplitude and phasing of overhead radiation during interglacials? 2) What is the behavior of the Western Pacific Warm Pool (WPWP) precipitation over the last several terminations? 3)Does the characteristic pattern of Dansgaard/Oeschger (D/O) and Heinrich events packaged into Bond Cycles appear in the WPWP?The last 500,000 years indicate multiple interglacial states during which tropical boundary conditions (i.e., sea level, sea-surface temperatures, atmospheric carbon dioxide levels) are roughly constant, but solar insolation forcing is very different. The researchers will use the stalagmite records from interglacials to investigate the Tropic's sensitivity to changes in insolation forcing. This research will support a female post-doctoral fellow and provide new climate records from a new archive that may bring greater understanding of the functioning of monsoons in the heavily populated Tropics.

提供资金，建立在以前的研究古气候从洞穴在婆罗洲的洞穴，扩大他们的研究从洞穴在这一地区，并调查三个关键的气候问题：1）什么是在热带地区的降水变化的幅度和阶段的开销辐射在间冰期？2)西太平洋暖池（WPWP）降水在过去几个终端的行为是什么？3)WPWP中是否出现了Dansgaard/Oeschger（D/O）和Heinrich事件包装成债券周期的特征模式？过去的50万年表明了多个间冰期状态，在此期间，热带边界条件（即，海平面、海表面温度、大气二氧化碳水平）大致恒定，但太阳日射强迫却大不相同。研究人员将利用间冰期的石笋记录来研究热带地区对日照强迫变化的敏感性。这项研究将支持一名女性博士后研究员，并从一个新的档案中提供新的气候记录，这可能会使人们更好地了解季风在人口稠密的热带地区的作用。