High resolution climate reconstruction for the last millennium using tree rings

提出的项目致力于采用一种独特的多参数方法，利用树木年轮来研究现代和古季风。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，可以提取年际和年内分辨率的古气候信息。与印度科学家一起，我们的目标是在喜马拉雅东西向样带和从干燥到潮湿的梯度上进行长达千年的、每年一次的降雨和温度重建。此外，印度中部低地和半岛的一些地点也将被研究，以便沿着印度次大陆建立一个南北样带。通过应用新的年内稳定同位素调查，我们正试图重建季节性变化和季节性危害，即季风降雨开始的变化和极端事件的频率和强度的变化。

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.