Journal Papers

Adjoint estimation of the variation in a model functional output due to assimilation of data
D.N. Daescu.
Monthly Weather Review, submitted.

On the sensitivity equations of 4D-Var data assimilation.( pdf file)
D.N. Daescu.
Monthly Weather Review, 136 (8), 3050-3065, 2008.

A Dual-Weighted Approach to Order Reduction in 4D-Var Data Assimilation. ( pdf file)
D.N. Daescu and I.M. Navon.
Monthly Weather Review, 136, 1026-1041, 2008.

Predicting Air Quality: Improvements through advanced methods to integrate models and measurements. ( pdf file)
GR Carmichael, A Sandu, T Chai, DN Daescu, EM Constantinescu, Y Tang.
Journal of Computational Physics, 227, 3540-3571, 2008.

Efficiency of a POD-based reduced second order adjoint model in 4D-Var data assimilation. ( pdf file)
D.N. Daescu and I.M. Navon.
International Journal for Numerical Methods in Fluids, 53:985-1004, 2007

Initiation of ensemble data assimilation. ( pdf file)
Zupanski M, Fletcher SJ, Navon IM, Uzunoglu B, Heikes RP, Randall DA, Ringler TD, Daescu DN.
Tellus Series A - Dynamic Meteorology and Oceanography 58 (2): 159-170 MAR 2006

Chemical data assimilation of Transport and Chemical Evolution over the Pacific (TRACE-P) aircraft measurements. (JGR link)
T.F. Chai, G.R. Carmichael, A. Sandu, Y.H. Tang, D.N. Daescu.
Journal of Geophysical Research-Atmospheres 111 (D2): Art. No. D02301 JAN 17 2006

Adjoint sensitivity analysis of regional air quality models. ( pdf file)
A. Sandu, D.N. Daescu, G.R. Carmichael, and Tianfeng Chai.
Journal of Computational Physics, vol. 204, 222-252, 2005

Adaptive observations in the context of 4D-Var data assimilation. ( pdf file)
D.N. Daescu and I.M. Navon.
Meteorology and Atmospheric Physics, vol. 85, 205-226, 2004

Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: I - theory and software tools. ( pdf file)
A. Sandu, D.N. Daescu, and G.R. Carmichael.
Atmospheric Environment 37 (36) , 5083-5096, 2003

Direct and adjoint sensitivity analysis of chemical kinetic systems with KPP: II - numerical validation and applications. ( pdf file)
D.N. Daescu, A. Sandu, and G.R. Carmichael.
Atmospheric Environment 37 (36), 5097-5114, 2003

Analysis of a hybrid optimization method for variational data assimilation. ( pdf file )
D.N. Daescu and I.M. Navon.
International Journal of Computational Fluid Dynamics, Vol. 17, No. 4, 299-306, 2003

An adjoint sensitivity method for the adaptive location of the observations in air quality modeling. (pdf file)
D.N. Daescu and G.R. Carmichael .
Journal of the Atmospheric Sciences, Vol. 60, No. 2, 434-450, 2003

A communication library for the parallelization of air quality models on structured grids. (pdf file)
Philipp Miehe, Adrian Sandu, Gregory R. Carmichael, Dacian N. Daescu.
Atmospheric Environment 36 (24) 3917-3930, 2002.

Second order information in data assimilation. (pdf file)
F.-X. LeDimet, I.M. Navon, and D.N. Daescu.
Monthly Weather Review, Vol. 130, No. 3 , 629-648, 2002

Adjoint Implementation of Rosenbrock Methods Applied to Variational Data Assimilation Problems. (pdf file)
D.N. Daescu, G.R. Carmichael and A. Sandu.
Journal of Computational Physics 165 (2), 496-510, 2000

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