| Approximate Gauss–Newton methods for nonlinear least squares problems S Gratton, AS Lawless, NK Nichols SIAM Journal on Optimization 18 (1), 106-132, 2007 | 309 | 2007 |
| An investigation of incremental 4D‐Var using non‐tangent linear models AS Lawless, S Gratton, NK Nichols Quarterly Journal of the Royal Meteorological Society: A journal of the …, 2005 | 100 | 2005 |
| Conditioning of incremental variational data assimilation, with application to the Met Office system SA Haben, AS Lawless, NK Nichols Tellus A: Dynamic Meteorology and Oceanography 63 (4), 782-792, 2011 | 68 | 2011 |
| Exploring strategies for coupled 4D-Var data assimilation using an idealised atmosphere–ocean model PJ Smith, AM Fowler, AS Lawless Tellus A: Dynamic Meteorology and Oceanography 67 (1), 27025, 2015 | 66 | 2015 |
| Representativity error for temperature and humidity using the Met Office high‐resolution model JA Waller, SL Dance, AS Lawless, NK Nichols, JR Eyre Quarterly Journal of the Royal Meteorological Society 140 (681), 1189-1197, 2014 | 66 | 2014 |
| Approximate iterative methods for variational data assimilation AS Lawless, S Gratton, NK Nichols International journal for numerical methods in fluids 47 (10‐11), 1129-1135, 2005 | 61 | 2005 |
| Data assimilation for state and parameter estimation: application to morphodynamic modelling PJ Smith, GD Thornhill, SL Dance, AS Lawless, DC Mason, NK Nichols Quarterly Journal of the Royal Meteorological Society 139 (671), 314-327, 2013 | 57 | 2013 |
| Conditioning and preconditioning of the variational data assimilation problem SA Haben, AS Lawless, NK Nichols Computers & Fluids 46 (1), 252-256, 2011 | 54 | 2011 |
| A comparison of two methods for developing the linearization of a shallow‐water model AS Lawless, NK Nichols, SP Ballard Quarterly Journal of the Royal Meteorological Society: A journal of the …, 2003 | 47 | 2003 |
| Using model reduction methods within incremental four-dimensional variational data assimilation AS Lawless, NK Nichols, C Boess, A Bunse-Gerstner Monthly Weather Review 136 (4), 1511-1522, 2008 | 43 | 2008 |
| Estimating correlated observation error statistics using an ensemble transform Kalman filter JA Waller, SL Dance, AS Lawless, NK Nichols Tellus A: Dynamic Meteorology and Oceanography 66 (1), 23294, 2014 | 42 | 2014 |
| Nonlinear bias correction for satellite data assimilation using Taylor series polynomials JA Otkin, R Potthast, AS Lawless Monthly Weather Review 146 (1), 263-285, 2018 | 41 | 2018 |
| Parameter estimation for a morphochemical reaction-diffusion model of electrochemical pattern formation I Sgura, AS Lawless, B Bozzini Inverse Problems in Science and Engineering 27 (5), 618-647, 2019 | 36 | 2019 |
| Investigating the role of prior and observation error correlations in improving a model forecast of forest carbon balance using Four-dimensional Variational data assimilation EM Pinnington, E Casella, SL Dance, AS Lawless, JIL Morison, ... Agricultural and Forest Meteorology 228, 299-314, 2016 | 34 | 2016 |
| Estimating forecast error covariances for strongly coupled atmosphere–ocean 4D-Var data assimilation PJ Smith, AS Lawless, NK Nichols Monthly Weather Review 145 (10), 4011-4035, 2017 | 33 | 2017 |
| The conditioning of least‐squares problems in variational data assimilation JM Tabeart, SL Dance, SA Haben, AS Lawless, NK Nichols, JA Waller Numerical Linear Algebra with Applications 25 (5), e2165, 2018 | 31 | 2018 |
| Accounting for model error in strong‐constraint 4D‐Var data assimilation KE Howes, AM Fowler, AS Lawless Quarterly Journal of the Royal Meteorological Society 143 (704), 1227-1240, 2017 | 31 | 2017 |
| Inner-loop stopping criteria for incremental four-dimensional variational data assimilation AS Lawless, NK Nichols Monthly weather review 134 (11), 3425-3435, 2006 | 31 | 2006 |
| Treating sample covariances for use in strongly coupled atmosphere‐ocean data assimilation PJ Smith, AS Lawless, NK Nichols Geophysical Research Letters 45 (1), 445-454, 2018 | 30 | 2018 |
| Variational data assimilation for very large environmental problems AS Lawless Large scale inverse problems: computational methods and applications in the …, 2013 | 30 | 2013 |
Nancy K NicholsProfessor of Applied Mathematics, University of ReadingVerified email at reading.ac.uk
