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  • How good are the simulations of tropical SST–rainfall relationship by IPCC AR4 atmospheric and coupled models?

    by K. Rajendran, Ravi S. Nanjundiah, Sulochana Gadgil, and J. Srinivasan

    The failure of atmospheric general circulation models (AGCMs) forced by prescribed SST to simulate and predict the interannual variability of Indian/Asian monsoon has been widely attributed to their inability to reproduce the actual sea surface temperature (SST)–rainfall relationship in the warm Indo-Pacific oceans.

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  • CSIR initiatives in High Performance Computing in India

    by R. P. Thangavelu, Vidyadhar Y. Mudkavi  & P. Seshu

    Council of Scientific and Industrial Research (CSIR) is a premier R&D organization in India whose geographical spread extends over the whole country while its scientific spread touches virtually all fields of science and technology including aerospace, biology, chemistry, earth sciences, engineering and physical sciences etc.

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  • Homotopy analysis method with a non-homogeneous term in the auxiliary linear operator

    by Anant Kant Shukla, T.R. Ramamohan and S. Srinivas

    We demonstrate the efficiency of a modification of the normal homotopy analysis method (HAM) proposed by Liaoby including a non-homogeneous term in the auxiliary linear operator (this can be considered as a special case of “further generalization” of HAM given by Liao in).

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  • Will the South Asian monsoon overturning circulation stabilize any further?

    by R. Krishnan, T. P. Sabin, D. C. Ayantika, A. Kitoh, M. Sugi, H. Murakami, A. G. Turner, J. M. Slingo and K. Rajendran

    Understanding the response of the South Asian monsoon (SAM) system to global climate change is an interesting scientificproblem that has enormous implications from the societal viewpoint.

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  • Attenuation of P, S and Coda Waves in the NW-Himalayas, India

    by Imtiyaz A. Parvez, Preeti Yadav, K. Nagaraj

    The frequency-dependent characteristics of P- and S- wave attenuation in the upper crust of NW Himalayas have been estimated using local earthquakes for a frequency range of 1.5 to 18 Hz.

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  • Real-time quantitative rainfall forecasts at hobli-level over Karnataka: evaluation for the winter monsoon 2010

    by P. Goswami, V. Rakesh, G. K. Patra and V. S. Prakash

    Advance and accurate forecasts of rainfall can aid many sectors, from agriculture to disaster mitigation. However, for effective application, such forecasts must be at relevant spatial scales; given the tremendous spatial variability of rainfall, only forecasts at high resolution can serve the user’s need.

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  • Palaeoprecipitation record using O-isotope studies of the Himalayan Foreland Basin sediments, NW India

    by Seema Singh, B. Prakash, A. K Awasthi and Tejpal Singh

    The Himalayan foreland basin sediments were deposited during a crucial time period in the Himalayan orogeny. This period, in the Tertiary, has become major focus of research because of the large scale uplift of the Himalayan range which has greatly modified the climate of the Asian continent. The present South Asian monsoonal climate is believed to be a consequence of Himalayan uplift during this period. Also the Himalayan orogeny comprises a major regional tectonic event of the Earth.

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  • Simulation of Spread and Control of Lesions in Brain

    by Krishna Mohan Thamattoor Raman

    A simulation model for the spread and control of lesions in the brain is constructed using a planar network (graph) representation for the central nervous system (CNS). The model is inspired by the lesion structures observed in the case of multiple sclerosis (MS), a chronic disease of the CNS. The initial lesion site is at the center of a unit square and spreads outwards based on the success rate in damaging edges (axons) of the network. The damaged edges send out alarm signals which, at appropriate intensity levels, generate programmed cell death.

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