Historical sailing routes

# Data and scripts for the paper "A multi-criteria simulation of European coastal shipping routes in the ‘age of sail’"

This repository contains all the data and scripts required to fully reproduce all analyses presented in the paper "A multi-criteria simulation of European coastal shipping routes in the ‘age of sail’" authored by Litvine, A.D. Lewis, J. Starzec, A.W.

Getting Started

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1. Open project using Simulating_shipping_routes.Rproj to ensure relative paths work.

2. Run the R scripts in the folder Preprocessing to reproduce the preprocessed data before running the main analysis.

  2.1 wind_uv_preprocessing.R reproduces the aggregated wind U and V raster layers. This function mean aggregates the .nc wind U and V layers for each month. Data is resampled to match the bathymetry dataset

  2.2 currents_uv_preprocessing.R reproduces the aggregated currents U and V raster layers. This function mean aggregates the .nc currents U and V layers for each month. Data is resampled to match the bathymetry dataset

  2.3 calculate_wind_variability.R reproduces the aggregated MoM, CV Speed, and CV Direction raster layers

  2.4 mean_wave_dir_processing.R reproduces the mean wave direction

  2.5 mean_wave_period_processing.R reproduces the mean wave period

  2.6 sig_wave_height_processing.R reproduces the mean significant wave height

  2.7 speed_reduction_processing.R reproduces the speed reduction based on significant wave height and mean wave direction

  2.8 calculate_dir_speed_distributions.R to reproduce plots showing the distribution of wind speed and direction per month

  2.9 dangerous_conditions_1.R to reproduce areas within the study area that have dangerous waves

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2.1 Run the 001 2024_01_16_Main.R R script in the R folder to calculate the least-cost paths from all-ports to all-ports for M1, M2, M3, and M3.

2.2 002 2024_01_16_route_lengths.R to calculate the length of each least-cost path for the four models.

2.3 003 2024_01_16_specific_routes.R to calculate the least-cost paths for specific routes (from specific ports) for each of the visibility ranges

2.4 2024_01_16_raster_distributions.R to reproduce the plots showing the spatial distributions of variables