6 citations · 12 across the 4 of their papers we have counts for
9 papers
Asymptotic approximations for convection onset with Ekman pumping at low wavenumbers
Sara Tro, Ian Grooms, Keith Julien
Ekman pumping is a phenomenon induced by no-slip boundary conditions in rotating fluids. In the context of Rayleigh-Bénard convection, Ekman pumping causes a significant change in…
Parameterized Ekman boundary layers on the tilted -plane
Sara Tro, Ian Grooms, Keith Julien
Rotating convection is considered on the tilted -plane where gravity and rotation are not aligned. For sufficiently large rotation rates, , the Taylor-Proudman effect results…
Machine Learning Techniques to Construct Patched Analog Ensembles for Data Assimilation
Lucia Minah Yang, Ian Grooms
Using generative models from the machine learning literature to create artificial ensemble members for use within data assimilation schemes has been introduced in [Grooms QJRMS, 20…
A note on the formulation of the Ensemble Adjustment Kalman Filter
Ian Grooms
The ensemble adjustment Kalman filter (EAKF; Anderson, 2001) is one of the earliest ensemble square root filters. This note clarifies the correct formulation of the EAKF, which dep…
A hybrid particle-ensemble Kalman filter for problems with medium nonlinearity
Gregor Robinson, Ian Grooms
A hybrid particle ensemble Kalman filter is developed for problems with medium non-Gaussianity, i.e. problems where the prior is very non-Gaussian but the posterior is approximatel…
Analog ensemble data assimilation and a method for constructing analogs with variational autoencoders
Ian Grooms
It is proposed to use analogs of the forecast mean to generate an ensemble of perturbations for use in ensemble optimal interpolation (EnOI) or ensemble variational (EnVar) methods…