Amos Lawless
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Approximate Gauss–Newton methods for nonlinear least squares problems
S Gratton, AS Lawless, NK Nichols
SIAM Journal on Optimization 18 (1), 106-132, 2007
2272007
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
862005
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
632014
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
552011
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
512015
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
512013
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
502005
Conditioning and preconditioning of the variational data assimilation problem
SA Haben, AS Lawless, NK Nichols
Computers & Fluids 46 (1), 252-256, 2011
462011
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
452003
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
372008
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
342014
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
272016
Variational data assimilation for very large environmental problems
AS Lawless
Large scale inverse problems, 55-90, 2013
262013
Inner-loop stopping criteria for incremental four-dimensional variational data assimilation
AS Lawless, NK Nichols
Monthly weather review 134 (11), 3425-3435, 2006
262006
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
232017
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
212017
Integration of a 3D variational data assimilation scheme with a coastal area morphodynamic model of Morecambe Bay
GD Thornhill, DC Mason, SL Dance, AS Lawless, NK Nichols, HR Forbes
Coastal Engineering 69, 82-96, 2012
212012
A note on the analysis error associated with 3D‐FGAT
AS Lawless
Quarterly Journal of the Royal Meteorological Society 136 (649), 1094-1098, 2010
212010
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
202018
An idealized study of coupled atmosphere–ocean 4D-Var in the presence of model error
AM Fowler, AS Lawless
Monthly Weather Review 144 (10), 4007-4030, 2016
202016
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