Lagrangian analysis is a powerful way to analyse the output of ocean circulation models and
other ocean velocity data such as from altimetry. In the Lagrangian approach, large sets of …

The residence time measures the time spent by a water parcel or a pollutant in a given water
body and is therefore a widely used concept in environmental studies. While many previous …

A new method to quantify the nonlinearity of data assimilation problems is proposed. The
method includes the effects of system errors, measurement errors, observational network, and …

Abstract Treatment plan optimization is a multi-criteria process. Optimizing solely on one
objective or on a sum of a priori weighted objectives may result in inferior treatment plans. …

Conventional ternary separations progressed via thermally coupled columns such as
Petlyuk configuration to a novel design that integrates two distillation columns into one shella …

In this paper we describe two reduced models that describe the hydraulic head h within
three-dimensional groundwater flow models. We defined a reduced model structure as a linear …

Gradient-based history matching algorithms can be used to adapt the uncertain parameters
in a reservoir model using production data. They require, however, the implementation of an …

The adjoint method has been used very often for variational data assimilation. The
computational cost to run the adjoint model often exceeds several original model runs and the …

To efficiently simulate the advection-diffusion processes along and across density surfaces,
we need to deal with a diffusivity tensor containing off-diagonal elements (Redi, J Phys …

The use of low air quality networks has been increasing in recent years to study urban
pollution dynamics. Here we show the evaluation of the operational Aburrá Valley’s low-cost …