DIVAnd is a software tool, written in Julia, designed to interpolate in situ measurements onto a regular grid. The tool has been applied in several European projects to create climatologies for variable such as temperature, salinity or eutrophication variables.
The main advantages of DIVAnd with respect to other interpolation methods are:
coastlines and physical boundaries are taken into account by this method.
large datasets (million of data points) can be ingested and processed by the tool.
R is a language widely used in the scientific community, hence the interface to call DIVAnd in a R session is the objective of the present project.
The product is based on the European Seabirds at Sea (ESAS) dataset which contains information for more than 2 million taxa. The gridded fields were computed with DIVAnd, along with the relative error fields, which depict the quality of the gridded field (i.e. large error when the field is not reliable, mainly because of the lack of observations).
The GitHub repositories for the tool and resulting data product are: