Newsletter No.3 July-1998@

Dr.Shao-Fen Tian

Large fluctuations of Rainfall in arid and semi-arid Asia and its interaction with vegetation. Before jointing FRSGC, I was investigating the mechanism of the spring persistent rains over Central China from the viewpoint of seasonal variation. I am also interested in phenomena associated the seasonal evolution of the climate system. In FRSGC, the final goal of my researches is understanding the physical process of hydrogical cycle in arid and semi-arid regions and its interaction with the Asian monsoon circulation and the climate system. Semi-arid Asia is located in the northern limit of Asia summer monsoon. Thus, monsoon circulation and mid-latitude disturbances can potentially influence this region. This region is also suffered from the desertification or land degradation. Both human activities and climate change are considered to be responsible for the desertification or land degradation. However, the former is much emphazed than the latter, and it is not clear that to what extent the variations in climatic conditions are responsible for the desertification or land degradation. GCM outputs suggest that both severe storms and droughts will occur frequently due to the global warming. It is necessary to examine this point with the observation records for the past decades because global warming is already in progress and the semi-arid Asia is one region where the global warming is most evident. For these reasons, I am starting my researches here by examining the following issues. I hope that my research activities will significantly contribute to the our project and I am looking forward to discussing with my colleagues.
  1. Spatial scales and time-scale dependence of rainfall variations in arid and semi-arid regions.
  2. Role of monsoon circulation on precipitation in semi-arid Asia.
  3. Moisture sources for precipitation in semi-arid Asia.
  4. Long-term variabilities in rainfall and its intensity.
  5. Monitoring of large-scale vegetation variation in semi-arid with remote sensed data (NDVI) and its assocations with rainfall fluctuations.

Dr.R.Krishnan

Hello, colleagues. It is a great pleasure for me to be involved in the research activities at FRSGC, IGCR. I joined the Global Warming Group of FRSGC on 1 May 1998 and my place of work is located at the Tsukuba branch of IGCR.
My research work at FRSGC is oriented towards understanding the impacts of global warming on the Indian monsoon.Here an attempt will be made to obtain reliable estimates of the influence of global warming on the Indian monsoon - by carrying out experiments with a high resolution GCM and also through a detailed data analysis.
I am happy to be involved in the study of one of the challenging scientific issues that concerns the present day and the future. A brief back ground of my previous work experience is given below.
  • Prior to joining FRSGC, I was working in the Climate Modeling Division at Indian Institute of Tropical Meteorology(IITM), Pune, India, from July 1995.My research at IITM was related to the study of Monsoon Variability on seasonal to interannual time-scales using atmospheric GCMS as well as data diagnosis.
  • Earlier,I had worked for 3 years(1992-1995) in the data assimilation and objective analysis division of National Center for Medium Range Weather Forecasting(NCM-RWF),New Delhi,India.
  • Prior to joining NCMRWF, I spent five years(1987-1992) for my Ph.D. Research work entitled "Dynamics of large-scale heat induced circulations in the tropical atmosphere"- at Physical Research Laboratory, Ahmedabad, India.
  • I hope that my research experience and scientific interactions at FRSGC and also the continued support of all my fellow colleagues at FRSGC will enable me to move towards my scientific goal along the right direction.I eagerly look forward to interacting with everyone of you.

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