High resolution climate reconstruction for the last millennium using tree rings

利用树木年轮重建上千年的高分辨率气候

• 批准号: 159233113
• 负责人: Dr. Gerhard Helle
• 金额: --
• 依托单位: Sektion 4.3: Klimadynamik und Landschaftsentwicklung
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/159233113?language=en
• 关键词: resolution; climate; reconstruction; last; millennium

The proposed project is dedicated to a unique multiparameter approach to investigate modern and palaeomonsoon using tree-rings. Tree rings provide precisely dated archives, from which palaeoclimate information will be extracted at inter- and intra-annual resolution by analyzing ring-width, wood density and stable isotopes of carbon and oxygen. Together with Indian scientists we are aiming at millennium long, annually resolved reconstructions of rainfall and temperature across an E-W Himalayan transect and gradients from dry to wet conditions. In addition sites from lowland central and peninsular India will be studied for developing a N-S transect along the Indian subcontinent. By applying novel intra-annual stable isotope investigations we are attempting to reconstruct changing seasonality and seasonal hazards, i.e. changes in the onset of monsoon rainfall and changes in frequency and intensity of extreme events.

拟议的项目致力于一个独特的多参数的方法来调查现代和古季风使用树木年轮。树木年轮提供了精确的年代档案，通过分析年轮宽度、木材密度和碳氧稳定同位素，将以年际和年内分辨率从中提取古气候信息。与印度科学家一起，我们的目标是千年之久，每年解决重建的降雨量和温度横跨东西喜马拉雅样带和梯度从干燥到潮湿的条件。此外，还将对印度中部和半岛的低地进行研究，以便沿印度次大陆沿着建立一个南北向样带。通过应用新的年内稳定同位素调查，我们正试图重建不断变化的季节性和季节性灾害，即季风降雨开始的变化和极端事件的频率和强度的变化。