In the present context of global warming due to climate change and climate variability a firm understanding of what has happened in the past is of paramount importance to asses futuristic trend of climate in a better way helping modelers, policy planners and economist for advance preparedness for any climate linked calamity ahead. As a sequel to the SIBER and GEOTRACES programme a number of proxies are expected to be utilized for the purpose of palaeoclimatic reconstruction from different geographic regions and at varying time scale ranging from last 10,000 years BP to Quaternary period and beyond. It is therefore proposed to induct new science component namely Paleoclimatic reconstructions using various proxies. In order to bring out a comprehensive and inclusive science component with regard to palaeoclimatic reconstructions a number of approaches / data / proxies shall be applied
In view of the above, it is proposed to initiate new science component namely palaeoclimatic reconstructions studies using various proxies at an estimated total cost of ` 95.00 croresinvolving institutions across the country having expertise in palaeoclimatic reconstructions through various research projects. The year-wise phasing of projected estimates is given below.
Several Institutions and Scientists in India have actively pursued studies on the past monsoon (palaeomonsoon) variability during the Quaternary. However most of these efforts are on a sub critical level with limitations of data density, data quality, proxy validation and chronology. However, a recent synthesis clearly indicates that a direct comparison of different dataset is non-trivial on account of difficulties with chronologies and proper understanding of proxy responses. Furthermore, so far, in general landforms have so far been correlated to climate without a proper elucidation of the sediment production, transport and preservation aspects. These imply lags in their response times that are dependent on sites and parameters controlling the sedimentation. Thus, the need to create a securely dated and properly calibrated database cannot be over emphasized as only this can provide an estimate of the natural variability of the Indian climate system that is needed both for policy formulation and regional developmental scenarios. The brief objectives are provided below
High-resolution subsurface stratigraphy, core raising and preparation of palaeoclimatic database on sediment characteristics, microfauna and flora, geochemistry, stable isotope, chronology, effect of shoreline shifts on human occupation in this part of the land.
(Rs. In crores)
|Name of the Scheme||2012-13||2013-14||2014-15||2015-16||2016-17||Total|
|Reconstruction of the palaeoclimatic conditions||25.00||20.00||20.00||15.00||15.00||95.00|
Last Updated On 04/07/2015 - 14:03