PUBLISHED ARTICLES

F. Mercier, S. Gürol, P. Jolivet, Y. Michel, and T. Montmerle. Block Krylov methods for accelerating ensembles of variational data assimilations. Q.J.R. Meteorol. Soc., 2018 (in press).

S. Gratton, S. Gürol, E. Simon, and Ph. L. Toint. A note on preconditioning weighted linear least squares, with consequences for weakly-constrained variational data assimilation. Q.J.R. Meteorol. Soc., 2018 (in press).

S. Gratton, S. Gürol, E. Simon, and Ph. L. Toint. Guaranteeing the convergence of the saddle formulation for weakly-constrained 4D-VAR data assimilation. Q.J.R. Meteorol. Soc., 2018 (in press).

A. T. Weaver, S. Gürol, J. Tshimanga, M. Chrust, and A. Piacentini. Time-parallel diffusion-based correlation operators. Q.J.R. Meteorol. Soc., 2018 (in press).

M. Fisher, S. Gratton, S. Gürol, Y. Trémolet, and X. Vasseur. Low rank updates in preconditioning the saddle point systems arising from data assimilation problems. Optimization Methods and Software, 33(1):45–69, 2018.

M. Fisher and S. Gürol. Parallelisation in the time dimension of four-dimensional variational data assimilation. Q.J.R. Meteorol. Soc., 143(703):1136–1147, 2017.

J. Mandel, E. Bergou, S. Gürol, and S. Gratton. Hybrid Levenberg–Marquardt and weak-constraint ensemble Kalman smoother method. Nonlinear Processes in Geophysics Discussions, 23(2):59–73, 2016.

E. Emili, S. Gürol, and D. Cariolle. Accounting for model error in air quality forecasts: an application of 4DEnVar to the assimilation of atmospheric composition using QG-Chem 1.0. Geoscientific Model Development, 9(11):3933–3959, 2016.

S. Gürol, A. T. Weaver, A. M. Moore, A. Piacentini, H. G. Arango, and S. Gratton. B preconditioned minimization algorithms for variational data assimilation with the dual formulation. Q.J.R. Meteorol. Soc., 140: 539–556, 2014.

S. Gratton, S. Gürol and Ph. L. Toint, Preconditioning and Globalizing Conjugate Gradients in Dual Space for Quadratically Penalized Nonlinear-Least Squares Problems, Computational Optimization and Applications, 54: 1-25, 2013.

S. Gürol, H. Özen, U. M. Leloğlu, I. Behnert, A. Deadman, N. Fox. Tuz Gölü: new CEOS reference standard test site for infrared visible optical sensors. Canadian Journal of Remote Sensing, volume: 36(5):553– 565, 2010.

BOOK CHAPTER

A. M. Moore, C. A. Edwards, J. Fiechter, P. Drake, H. G. Arango, E. Neveu, S. Gürol, and A. T. Weaver. A 4D-Var analysis system for the california current: A prototype for an operational regional ocean data assimilation system. In S. K. Park and Liang Xu, editors, Data Assimilation for Atmospheric, Oceanic and Hydrological Applications, pages 345-366. Springer, 2013.


PROCEEDINGS / TECHNICAL REPORTS

A. Gazaix, F. Gallard, V. Gachelin, T. Druot, S. Grihon, V. Ambert, D. Guenot, R. Lafage, C. Vanaret, B. Pauwels, N. Bartoli, T. Lefebvre, P. Sarouille, N. Desfachelles, J. Br´ezillon, M. Hamadi, and S. Gürol. Towards the Industrialization of New MDO Methodologies and Tools for Aircraft Design. In 18th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference. American Institute of Aeronautics and Astronautics, 2017.


A. T. Weaver, S. Gürol, J. Tshimanga, M. Chrust, and A. Piacentini. Time-parallel diffusion-based correlation operators. Technical Report 808, ECMWF, 2017.


S. Gratton, S. Gürol, Ehouarn Simon, and Ph. L. Toint. Issues in making the weakly-constrained 4D-Var formulation computationally efficient. In Oberwolfach Reports, Mathematical and Algorithmic Aspects of Data Assimilation in the Geosciences, volume 47, pages 22–27, 2016.


S. Gratton, S. Gürol, Ph. L. Toint, J. Tshimanga, and A. T. Weaver. Krylov methods in the observation space for data assimilation. In Oberwolfach Reports, Mathematical and Algorithmic Aspects of Atmosphere-Ocean Data Assimilation, volume 58, pages 3427–3429, 2012.


S. Gratton, S. Gürol, and Ph. L. Toint. Preconditioning and globalizing conjugate gradients in dual space for quadratically penalized nonlinear-least squares problems. Technical Report TR/PA/10/136, CERFACS, Toulouse, France, 2010.


S. Gürol, A. T. Weaver, A. M. Moore, A. Piacentini, H. G. Arango, and S. Gratton. B-preconditioned minimization algorithms with the dual formulation. Technical Report TR/PA/12/118, CERFACS, Toulouse, France, 2012.


Uğur Murat Leloğlu, Sevgi Zübeyde Gürbüz, Hilal Özen, Selime Gürol, 2010. Characterization of the spatial uniformity of the Tuz Gölü calibration test site. ISPRS Conference paper, ISPRS Istanbul workshop on modeling of optical and spaceborne sensors, WG I/4, IAPRS vol. XXXVIII, part 1/W4.

Fox, N., Behnert I., Pegrum-Browning H., Gürol S., and Özen H., 2009a. A best practice guide to land “test-site” characterization, QA4EO-WGCV-IVO-CLP-004, QA4EO documentation, NPL, UK.Fox, N., Behnert I., Pegrum-Browning H., Gürol S., and Özen H., 2009b. Procedure for establishing a land based reference test site, QA4EO-WGCV-IVO-CLP-003, QA4EO documentation, NPL, UK.

Oktay Algün, Burcu Dikmen, Selime Gürol, Murat Hüdaverdi, Hilal Özen, Celal Tüfekçi, 2009. Uzay Teknolojileri Uygulamaları (Space Technologies Applications), Bilim Teknik Dergisi, 2009 eylül sayısı, sayfa 28 – 37.

Hilal Özen, Selime Gürol, Uğur Murat Leloğlu, Erol Tunalı, 2009. Uydu Görüntüleri ve Yersel Verilerden Tuz Gölü’nün Homojenlik Analizi, TUFUAB V. Teknik Sempozyumu.

Gürol, S., Özen, H., Leloğlu, U., M. and Tunalı, E., 2008. Tuz gölü: new absolute radiometric calibration test site. Commission I, WG I/1, Vol. XXXVII, Part B1, XXIst ISPRS Congress, 3-11 Jul 2008 Beijing, China.

Selime Gürol, Özgür Gurtuna, 2006.  Towards Space: ISU Expedition to Turkey, The Universe & Alumni News, issue 16.

Gökhan Yüksel, Erol Tunalı, Selime Gürol, Uğur Murat Leloğlu, 2006. TÜBİTAK-UZAY Yer Gözlem Uydu Çalışmaları ve Görüntü Dağıtım Politikaları, Birinci Uzaktan Algılama ve CBS Çalıştay ve Paneli

Selime Gürol, Hakan Öktem, 2005. ‘’Statistical Learning and Optimization Methods for Improving the Efficiency  in Landscape Image Clustering and Classification Problems’’, ISPRS Conference Paper on Spatial Data Mining

ISU Project Team, 2004. Space Technologies for the Research of Effective Water Management, ISU Printed Report