2. seacarb - seacarb is an R package that calculates various parameters of the carbonate system in seawater. The package is available on CRAN and it is used in several large international programs like EUROTHROPH, CARBOOCEAN and EPOCA.
3. Optimization and solving packages - Packages for optimization, including large scale optimization and equation solving. Related numerical methods packages for gradient and hessian calculation and for factor rotation are also included.
4. limSolve - Functions to solve linear inverse models (lim), i.e. find the minimum/maximum of a linear or quadratic function subject to equality and inequality constraints, functions to randomly sample lims.