• The Aqua-Planet Experiment (APE): CONTROL SST Simulation

    by Blackburn, M., D. L. Williamson, K. Nakajima, W. Ohfuchi, Y. O. Takahashi, Y.-Y. Hayashi, H. Nakamura, M. Ishiwatari, J. McGregor, H. Borth, V. Wirth, H. Frank, P. Bechtold, N. P. Wedi, H. Tomita, M. Satoh, M. Zhao, I. M. Held, M. J. Suarez, M.-I. Lee, M. Watanabe, M. Kimoto, Y. Liu, Z. Wang, A. Molod, K. Rajendran, A. Kitoh, and R. Stratton

    Climate simulations by 16 atmospheric general circulation models (AGCMs) are compared on an aqua-planet, a water-covered Earth with prescribed sea surface temperature varying only in latitude. The idealised configuration is designed to expose differences in the circulation simulated by different models. Basic features of the aqua-planet climate are characterised by comparison with Earth.

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  • New approaches for seismic hazard studies in the Indian subcontinent

    by Imtiyaz A. Parvez

    Earthquakes constitute among the most feared natural hazards and these occur with no warning which can result in great destruction and loss of lives, particularly in developing countries. One way to mitigate the destructive impact of such earthquakes is to conduct a seismic hazard assessment and take remedial measures. This article aims at demonstrating significant contributions in the field of seismic zonation and microzonation studies in the Indian subcontinent. The contributions in the field of earthquake hazard have been very valuable and beneficial not only for science but also for society.

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  • Effect of SST Variation on ITCZ in APE Simulations

    by K Rajendran,A Kitoh, and J Srinivasan

    The effect of meridional variation of sea surface temperature (SST) on tropical atmospheric circulation is analyzed using Aqua-planet Experiment (APE)simulations. The meridional SST gradient around the narrow SST peak in Control simulation favours a strong and single equatorial Inter Tropical Convergence Zone (ITCZ, defined by the maximum of zonally averaged total precipitation) in all APE models. In contrast, flat equatorial SST peak (FLAT simulation)favours split/double ITCZs flanking the SST maximum, in the majority of the APE models. Although there is reasonable agreement for SST sensitivity of ITCZ  among the APE models in Control, there exists disparity among them in FLAT case. Similarly, while the total and convective precipitation responses are consistent among the models, the large-scale precipitation response shows considerable inter-model variations in FLAT case. The APE intercomparison indicates that the occurrence and positioning of the ITCZ are primarily related to boundary layer moisture convergence as a response to the meridional variation of SST. Furthermore, the meridional gradient of tropospheric temperature is found to be an important factor that can influence the positioning of ITCZ.

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  • Recognition of Earthquake-Prone Areas in the Himalaya: Validity of the Results

    by A. Gorshkov, I. A. Parvez, and O. Novikova

    In 1992 seismogenic nodes prone for earthquakes 6.5+ have been recognized for the Himalayan arc using the pattern recognition approach. Since then four earthquakes of the target magnitudes occurred in the region. The paper discusses the correlation of the events occurred in the region after 1992 with nodes previously defined as having potential for the occurrence of earthquakes M6.5+. The analysis performed has shown that three out of four earthquakes M6.5+ occurred at recognized seismogenic nodes capable of M6.5+.

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  • Monsoon sensitivity to aerosol direct radiative forcing in the community atmosphere model

    by S Sajani, K Krishna Moorthy, K Rajendran and Ravi S Nanjundiah

    Aerosol forcing remains a dominant uncertainty in climate studies. The impact of aerosol direct radiative forcing on Indian monsoon is extremely complex and is strongly dependent on the model, aerosol distribution and characteristics specified in the model, modelling strategy employed as well as on spatial and temporal scales.

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  • Definition of seismic and tsunami hazard scenarios by exploiting EU-India Grid e-infrastructures

    by A. Magrin, A. Peresan, F. Vaccari, S. Cozzini, B.K. Rastogi, I.A. Parvez, G.F. Panza

    Seismic hazard assessment can be performed following a neo-deterministic approach (NDSHA), which allows to give a realistic description of the seismic ground motion due to an earthquake of given distance and magnitude. The approach is based on modelling techniques that have been developed from a detailed knowledge of both the seismic source process and the propagation of seismic waves.

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  • Monsoon circulation interaction with Western Ghats orography under changing climate Projection by a 20-km mesh AGCM

    by K. Rajendran, A. Kitoh, J. Srinivasan, R. Mizuta and R. Krishnan

    In this study, the authors have investigated the likely future changes in the summer monsoon over the Western Ghats (WG) orographic region of India in response to global warming, using time-slice simulations of an ultra high-resolution global climate model and climate datasets of recent past.

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  • CSIR C-MMACS celebrates Silver Jubilee with the Inaugural Function on 3rd August 2012




    For details click here


    CSIR Centre for Mathematical Modelling and Computer Simulation (C-MMACS)
    (Council of Scientific and Industrial Research)


    The inauguration of




    on Friday, 3 August 2012 at 9.30 a. m.
    at Conference Hall, C-MMACS Network Building
    NAL Belur Campus, Bangalore - 560037




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  • Predicting malaria, encephalitis before they get you

    Diseases like malaria and Japanese encephalitis can now be avoided

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  • Monsoon forecasting gets technology punch with use of dynamical models

    Economic times reports:

    BANGALORE: Information about monsoon rainfall is a key input to many farmers, but all they can hope to get in advance is a forecast about the total rainfall for the country for the entire season.

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  • Multi-scale Modeling & Simulation of Carbon Nanocones

    by V Senthilkumar and D Sangamesh

    Nanocones are used in probes for scanning tunneling microscopes, nanoelectronic devices, gas sensors, biosensors and chemical probes. Very few reliable continum modeling of nanocones are available in the literature study.

    Source: Nanodigest, V.4, 1, June, 2012.

  • Estimating Trust Value for Cloud Service Providers using Fuzzy Logic

     by Supriya M, Venkataramana L.J, K Sangeeta, G K Patra

    Cloud computing has garnered popular support in a relatively short span of time. It is a new method of delivering the distributed resources over internet. It reduces capital expenditure as well as operational expenditure. The number of cloud service providers (CSPs) who provide computing as a utility has increased exponentially in the past few years, providing more options for the customers to choose from. In this paper a model for Trust Management based on Fuzzy Logic has been developed, which can help consumers make an informed choice towards selecting the appropriate CSP as per their requirement.


  • 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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  • Bangalore to get India’s fastest supercomputer

    India’s fastest supercomputer will soon be housed in Bangalore.

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