Computational Science Laboratory

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URL: http://people.cs.vt.edu/~asandu/CSL/index.php

Contact: Adrian Sandu

2008
Lee M., Weidner R., Bowman K., Sandu A., Singh K., "Sensor-web Operations Explorer (SOX) for Integrated Air Quality Campaign", IEEE ECMI 2008, 09/2008. Tagged BibTex xml
Alexe M., Sandu A., "ADJERKDENS, a Runge Kutta library for adjoint calculation", submitted, 2008. Tagged BibTex xml
Alexe M., Sandu A., "On the discrete adjoints of variable step time integrators", submitted, 2008. Tagged BibTex xml
Sandu A., Zhang L., "Discrete Second Order Adjoints in Atmospheric Chemical Transport Modeling", Jurnal of Computational Physics, vol. 227, no. 12, pp. 5949–5983, 2008. Tagged BibTex xml
Constantinescu E M., Sandu A., Carmichael G R., "Modeling atmospheric chemistry and transport with dynamic adaptive resolution", Computational Geosciences, 2008. Tagged BibTex xml
Liu Z., Sandu A., "Analysis of discrete adjoints of numerical methods for the advection equation", International Journal for Numerical Methods for Fluids, vol. 56, no. 7, pp. 769–803, 2008. Tagged BibTex xml
Sandu C., Sandu A., Chan B., Ahmadian M., "A response spectral decomposition approach for the control of nonlinear mechanical systems", International Journal of Heavy Vehicle Systems, vol. 15, no. 1, pp. 26, 2008. Tagged BibTex xml
Carmichael G R., Chai T., Sandu A., Constantinescu E M., Daescu D., "Predicting air quality: improvements through advanced methods to integrate models and measurements", Journal of Computational Physics, vol. 227, no. 7, pp. 3540–3571, 2008. Tagged BibTex xml
2007
Sandu A., Constantinescu E M., "Multirate Adams-Bashforth integration of hyperbolic systems", Journal on Scientific Computing, vol. submitted, 2007. Tagged BibTex xml
Sandu A., On consistency properties of discrete adjoint linear multistep methods, , no. CS-TR-07-4: Computer Science Department, Virginia Tech, 2007. Tagged BibTex xml
Hakami A., Henze D K., Seinfeld J H., Singh K., Sandu A., Kim S., Byun D., Li Q., "The adjoint of CMAQ", Environmental Science and Technology, vol. 41, no. 22, pp. 7807–7817, 2007. Tagged BibTex xml
Constantinescu E M., Sandu A., Chai T., Carmichael G R., "Autoregressive models of background errors for chemical data assimilation", Journal of Geophysical Research, vol. 112, no. D12309, 2007. Tagged BibTex xml
Constantinescu E M., Sandu A., "Multirate timestepping methods for hyperbolic conservation laws", Journal on Scientific Computing, vol. 33, no. 3, pp. 239–278, 2007. Tagged BibTex xml
Constantinescu E M., Sandu A., Chai T., Carmichael G R., "Ensemble-based chemical data assimilation. I: General approach", Quarterly Journal of the Royal Meteorological Society, vol. 133, no. 626, pp. 1229–1243, July, 2007. Tagged BibTex xml
Constantinescu E M., Sandu A., Chai T., Carmichael G R., "Ensemble-based chemical data assimilation. II: Covariance localization", Quarterly Journal of the Royal Meteorological Society, vol. 133, no. 626, pp. 1245–1256, July, 2007. Tagged BibTex xml
Chai T., Carmichael G R., Tang Y., Sandu A., Hardesty M., Pilewskie P., Whitlow S., Browell E V., Avery M A., Thouret V., Nedelec P., Merrill J T., and Thomson A M., "Four dimensional data assimilation experiments with ICARTT (International Consortium for Atmospheric Transport and Transformation) ozone measurements", Journal of Geophysical Research, vol. 112, no. D12S15, 2007. Tagged BibTex xml
Constantinescu E M., Sandu A., Chai T., Carmichael G R., "Assessment of ensemble-based chemical data assimilation in an idealized setting", Atmospheric Environment, vol. 41, no. 1, pp. 18-36, 2007. Tagged BibTex xml
2006
Miehe P., Sandu A., "Forward, Tangent Linear, and Adjoint Runge Kutta Methods in KPP–2.2 for Efficient Chemical Kinetic Simulations", Applied Numerical Mathematics, 2006. Tagged BibTex xml
Sandu A., "On the Properties of Runge-Kutta Discrete Adjoints", Lecture Notes in Computer Science, vol. LNCS 3994,: "International Conference on Computational Science", pp. 550–557, 2006. Tagged BibTex xml
Hakami A., Seinfeld J H., Chai T., Tang Y., Carmichael G R., Sandu A., "Adjoint sensitivity analysis of ozone non-attainment over the continental United States", Environmental Science and Technology, 2006. Tagged BibTex xml
Sandu C., Sandu A., and Li L., "Modeling of stochastic terrain profiles and soil parameters", SAE 2005 Transactions – Journal of Commercial Vehicles, vol. 114, no. 2, pp. 211–220, 2006. Tagged BibTex xml
Chai T., Carmichael G R., Sandu A., Tang Y., Daescu D N., "Chemical data assimilation with TRACE-P aircraft measurements", Journal of Geophysical Research, vol. 111, no. D02301, 2006. Tagged BibTex xml
Sandu A., Sander R., "Modeling chemical kinetic systems in Fortran90 and Matlab with KPP-2.1", Atmospheric Chemistry and Physics, vol. 6, pp. 187–195, 2006. Tagged BibTex xml
Sandu A., "Piecewise polynomial solutions of aerosol dynamics", Aerosol Science and Technology, vol. 40, pp. 1–13, 2006. Tagged BibTex xml
Sandu A., Sandu C., Ahmadian M., "Modeling multibody dynamic systems with uncertainties. Part I: theoretical and computational aspects", Multibody System Dynamics, vol. 15, no. 4, pp. 369–391, 2006. Tagged BibTex xml
Sandu A., Sandu C., Ahmadian M., "Modeling multibody dynamic systems with uncertainties. Part II: numerical applications", Multibody System Dynamics, vol. 15, no. 3, pp. 245–266, 2006. Tagged BibTex xml
2005
Sandu A., M. Constantinescu E., Liao W., R. Carmichael G., Chai T., H. Seinfeld J., Daescu D., "Ensemble Filter Data Assimilation for Atmospheric Chemical and Transport Models", International Conference on Computational Science (ICCS05): International Conference on Computational Science, pp. 648–656, 2005. Tagged BibTex xml
Constantinescu E M., Liao W., Sandu A., "Mesh Refinement Strategies in Air Quality Modeling", High Performance Computing Symposium (HPC 2005): High Performance Computing Symposium, pp. 158–163, 2005. Tagged BibTex xml
Constantinescu E M., Sandu A., "On Adaptive Mesh Refinement for Atmospheric Pollution Models", Lecture Notes in Computer Science, vol. 3515: "International Conference on Computational Science", pp. 798–806, 2005. Tagged BibTex xml
Hakami A., Henze D K., Seinfeld J H., Chai T., Tang Y., Carmichael G R., Sandu A., "Adjoint inverse modeling of black carbon during ACE-Asia", Journal of Geophysical Research, vol. 110, no. D14, 2005. Tagged BibTex xml
Sandu A., Liao W., Carmichael G R., Henze D K., Seinfeld J H., "Inverse modeling of aerosol dynamics using adjoints – theoretical and numerical considerations", Aerosol Science and Technology, vol. 39, pp. 1–18, 2005. Tagged BibTex xml
Sandu A., Daescu D., Carmichael G R., Chai T., "Adjoint sensitivity analysis of regional air quality models", Journal of Computational Physics, vol. 204, pp. 222–252, 2005. Tagged BibTex xml
2004
Sandu A., Daescu D., Carmichael G R., Chai T., "Parallel Chemical Data Assimilation in Atmospheric Models", SIAM Conference on Parallel Processing PP04, vol. Session CP, pp. San Francisco, 2004. Tagged BibTex xml
Sandu A., Belwal C., Constantinescu E M., Parallel Adaptive Simulations of Regional Air Quality, : SIAM Conference on Parallel Processing for Scientific Computing, 2004. Tagged BibTex xml
Sandu A., Sandu C., Chan B., Ahmadian M., "Control of mechanical systems using a parameterized spectral decomposition approach", Sixth annual symposium on advanced vehicle technology, no. IMECHE-200, pp. 9, November 14-19, 2004. Tagged BibTex xml
Sandu C., Sandu A., Chan B., Ahmadian M., "Treating uncertainties in multi-body dynamic systems using a polynomial chaos spectral decomposition", Sixth annual symposium on advanced vehicle technology, no. IMECHE-200, pp. 9, November 14-19, 2004. Tagged BibTex xml
Chai T., Carmichael G R., Daescu D., Sandu A., "Analysis of Trace-P observations using a 4D-Var data assimilation technique", {Proceedings of the 84-th American Meteorological Society annual meeting}, vol. Session 8:, no. 8.4, pp. 6, January 11-15, 2004. Tagged BibTex xml
Carmichael G R., Sandu A., Daescu D., Chai T., Seinfeld J H., Hess P., Anderson T., "Chemical data assimilation in support of air quality forecasting", Proceedings of the 84-th American Meteorological Society annual meeting, vol. Session 2:, no. 2.1, pp. 6, January 11-15, 2004. Tagged BibTex xml
Sandu A., Liao W., Carmichael G R., Henze D., Seinfeld J H., Chai T., Daescu D., "Computational aspects of data assimilation for aerosol dynamics", Lecture Notes in Computer Science, vol. 3038: Springer-Verlag GmbH, pp. 709–716, June, 2004. Tagged BibTex xml
Belwal C., Sandu A., Constantinescu E M., "Adaptive resolution modeling of air pollution", ACM Symposium on Applied Computing (SAC-2004), pp. 235–239, March, 2004. Tagged BibTex xml
Tang Y., Carmichael G R., Horowitz L W., Uno I., Woo J H., Streets D G., Dabdub D., Kurata G., Sandu A., Allan J., Atlas E., Flocke F., Huey L G., Jakoubek R O., Millet D B., Parrish D D., Quinn P K., Roberts J M., Ryerson T B., Williams E., Nowak J B., Worsnop D., Goldstein A., Donnelly S., Schauffler S., Stroud V., Johnson K., Avery M A., Singh H B., Apel E C., "Multi-scale simulations of tropospheric chemistry in the Eastern Pacific and U.S. West coast during spring 2002", Journal of Geophysical Research - Atmospheres, vol. 109, no. D23, 2004. Tagged BibTex xml
Tang Y., Carmichael G R., Seinfeld J H., Dabdub D., Weber R J., Huebert B., Clarke A D., Guazzotti S A., Sodeman D A., Prather K A., Uno I., Woo J H., Streets D G., Quinn P K., Johnson J E., Song C H., Sandu A., Talbot R W., Dibb J E., "Three-dimensional studies of aerosol ions and their size distribution in East Asia during spring 2001", Journal of Geophysical Research, vol. 109, no. D19, 2004. Tagged BibTex xml
Henze D K., Seinfeld J H., Liao W., Sandu A., Carmichael G R., "Inverse modeling of aerosol dynamics: condensational growth", Journal of Geophysical Research, vol. 109, no. D14, 2004. Tagged BibTex xml
2003
Sandu A., Negrut D., Sandu C., Haug E J., Potra F A., "Rosenbrock Nystrom integrator for SSODE of mechanical systems", Proceedings of ASME International (DETC-2003), no. VIB-48329, pp. 8, September 6-10, 2003. Tagged BibTex xml
Carmichael G R., Daescu D., Sandu A., Chai T., "Computational aspects of chemical data assimilation into atmospheric models", Springer Lecture Notes in Computer Science, no. 2660, pp. 269–278, June, 2003. Tagged BibTex xml
Sandu A., Borden C T., "Discretization of aerosol dynamics with B-splines", ACM Symposium on Applied Computing (SAC-2003), pp. 189–193, March 13-18, 2003. Tagged BibTex xml
Sandu A., "Computational Sciences track editorial", {ACM Symposium on Applied Computing (SAC-2003)}, pp. 141–142, March 13-18, 2003. Tagged BibTex xml
Sandu A., Daescu D N., Chai T., Carmichael G R., Seinfeld J H., Hess P G., Anderson T L., Darema F., "Computational aspects of 4D-Var chemical data assimilation in atmospheric models", Dynamic Data Driven Applications Systems: Kluwer Academic Publishers, 2003. Tagged BibTex xml
Sandu A., Borden C T., "A framework for the numerical treatment of aerosol dynamics", Applied Numerical Mathematics, vol. 45, pp. 475–497, 2003. Tagged BibTex xml
Sandu A., Negrut D., Haug E J., Potra F A., Sandu C., "A Rosenbrock-Nystrom state space implicit method for the dynamic analysis of mechanical systems: I – Theoretical development", Journal of Multibody Dynamics, vol. 217, no. K4, pp. 263–272, 2003. Tagged BibTex xml
Negrut D., Sandu A., Haug E J., Potra F A., Sandu C., "A Rosenbrock-Nystrom state space implicit method for the dynamic analysis of mechanical systems: II – The Method and numerical results", Journal of Multibody Dynamics, vol. 217, no. K4, pp. 273–282, 2003. Tagged BibTex xml
Daescu D., Sandu A., Carmichael G R., "Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: II – Numerical validation and applications", Atmospheric Environment, vol. 37, pp. 5097–5114, 2003. Tagged BibTex xml
Sandu A., Daescu D., Carmichael G R., "Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: I – Theory and software tools", Atmospheric Environment, vol. 37, pp. 5083–5096, 2003. Tagged BibTex xml
2002
Sandu A., Daescu D., Carmichael G R., "Adjoint data assimilation for aerosol dynamics", Proceedings of the second International Conference on Air Polution Modeling and Simulation (APMS-2001), pp. 319–331, 2002. Tagged BibTex xml
Damian V., Sandu A., Damian M., Potra F., Carmichael G R., "The Kinetic PreProcessor KPP – a software environment for solving chemical kinetics", (Computers and Chemical Engineering), vol. 26, pp. 1567–1579, 2002. Tagged BibTex xml
Miehe P., Sandu A., Carmichael G R., Tang Y., Daescu D., "A Communication Library for the Parallelization of Air Quality Models on Structured Grids", Atmospheric Environment, vol. 36, pp. 3917–3930, 2002. Tagged BibTex xml
2001
Duff J F., Merkey P., Sandu A., "Parallel molecular dynamics using MPI on a Scyld-style Beowulf cluster", Proceedings of the 10th SIAM Conference on Parallel Processing for Scientific Computing, pp. 272–279, 2001. Tagged BibTex xml
Sandu A., A spectral method for solving aerosol dynamics, , no. CSTR-01-04, 1400 Townsend Drive, Houghton, MI 49931, Department of Computer Science, Michigan Technological University, 2001. Tagged BibTex xml
2000
D. Daescu, Carmichael G R., A. Sandu, "Adjoint implementation of Rosenbrock methods applied to variational data assimilation", American Meteorological Society, pp. 346–354, May 15–19, 2000. Tagged BibTex xml
S. He, Carmichael G R  ., A. Sandu, Hotchkiss B  ., "Application of ADIFOR for air pollution model sensitivity studies", Environmental Modeling and Software, vol. 15, pp. 549–557, 2000. Tagged BibTex xml
1999
Carmichael G R., Sandu A., Song C H., He S., Phadnis M., Daescu D., Damian-Iordache V., Potra F A., Zlatev Z., "Computational challenges of modeling interactions between aerosol and gas phase processes", NATO Advanced Study Institute on Computational Challenges in Air Pollution Modeling, pp. 99–136, 1999. Tagged BibTex xml
1998
Shan H., Carmichael G R., Sandu A., Hotchkis B., "Exploring the effects of aerosols and photochemistry and radiative processes in the troposphere using automatic differentiation", Proceedings of the First International Conference on Air Pollution Modeling and Simulation (APMS-1998), pp. 12, 1998. Tagged BibTex xml
1997
Jay L O., Sandu A., Potra F A., Carmichael G R., "Improved QSSA methods for atmospheric chemistry integration", SIAM Journal on Scientific Computing, vol. 18, no. 1, pp. 182–202, 1997. Tagged BibTex xml
1996
Jay L O., Sandu A., Potra F A., Carmichael G R., Kreuzer E., Mahrenholtz O., "Efficient Numerical Integration for Atmospheric Chemistry", Special issue of ZAMM: Applied sciences, no. 4, pp. 450–453, 1996. Tagged BibTex xml
Carmichael G R., Sandu A., Potra F A., Damian-Iordache V., Damian-Iordache M., "The current state and the future directions in air quality modeling", Systems Analysis Modelling Simulation, vol. 25, pp. 75–105, 1996. Tagged BibTex xml
Carmichael G R., Sandu A., Potra F A., Damian-Iordache V., "An overview of sensitivity analysis for atmospheric chemistry models via automatic differentiation", Air Pollution IV - Monitoring, Simulation and Control, vol. B. Caussad, pp. Computational Mechanics Publications, Southampton, Boston, 1996. Tagged BibTex xml
1995
Sandu A., Carmichael G R., Potra F A., "Using automatic differentiation for sensitivity analysis of atmospheric chemistry models", Office for Official Publications of the European Communities, no. L–2985, pp. 49–51, 1995. Tagged BibTex xml