DOI: 10.5061/dryad.69p8cz906
title: Global port environmental data used for environmental distance calculations

description: This dataset includes 6,727 global ports, providing geographic coordinates
 and four environmental variables: mean temperature of the warmest and
 coldest months, mean monthly temperature, and mean monthly salinity. All
 measurements were taken from surface water. Primary data sources include
 Wang et al. (2015), World Ocean Atlas 2018 (Locarnini et al. 2018; Zweng
 et al. 2018), and Wanders et al. (2019). Data for estuarine and riverine
 ports were adjusted where better information was available, with a focus
 on Canadian ports and last ports of call for ships arriving in Canada.
description: A global list of 6,727 ports was compiled using data from Keller
 et al. (2011), with additions from the Canadian Ballast Water Information
 System based on transit histories (e.g. last port of call) of ships
 arriving at Canadian ports. In version 2 (2025), duplicate ports were
 combined, misidentified non-port locations were excluded, and several
 coastal communities in the Canadian Arctic that receive vessel traffic
 were included. The port environmental data includes four variables: mean
 temperature of the warmest and coldest months, mean monthly temperature,
 and mean monthly salinity. Mean monthly data were incorporated in version
 2, primarily sourced from Wang et al. (2015), World Ocean Atlas 2018, and
 Wanders et al. (2019). All measurements were taken from surface water.
 Annual temperature and salinity estimates were calculated based on monthly
 means. For ports lacking monthly salinity data (e.g. estuarine ports),
 annual estimates from Keller et al. (2011) were used, though these do not
 account for seasonal variations. These estimates were adjusted when better
 data were available. Data were verified and updated through literature
 reviews and communications with local experts. 'n/a' indicates
 an empty cell (no data available). Data
 sources: Keller, R.P., Drake, J.M., Drew, M.B., and
 Lodge, D.M. 2011. Linking environmental conditions and ship movements to
 estimate invasive species transport across the global shipping network.
 Diversity Distrib. 17: 93–102. https://doi.org/10.1111/j.1472-4642.2010.00696.x Locarnini, R.A., Mishonov, A.V., Baranova, O.K., Boyer, T.P., Zweng, M.M., Garcia, H.E., Reagan, J.R., Seidov, D., Weathers, K., Paver, C.R., and Smolyar, I. 2018. World Ocean Atlas 2018, Volume 1: Temperature. NOAA Atlas NESDIS 81, 52 pp. Wanders, N., van Vliet, M.T.H., Wada, Y., Bierkens, M.F.P., and van Beek, L.P.H. 2019. High-resolution global water temperature modelling. Water Resour. Res. 55: 2760–2778. https://doi.org/10.1029/2018WR023250 Wang, L., Riseng, C.M., Mason, L.A., Wehrly, K.E., Rutherford, E.S., McKenna, J.E., Castiglione, C., Johnson, L.B., Infante, D.M., Sowa, S., Robertson, M., Schaeffer, J., Khoury, M., Gaiot, J., Hollenhorst, T., Brooks, C.N., and Coscarelli, M. 2015. A spatial classification and database for management, research, and policy making: The Great Lakes aquatic habitat framework. J. Great Lakes Res. 41: 584–596. http://doi.org/10.1016/j.jglr.2015.03.017 Zweng, M.M., Reagan, J.R., Seidov, D., Boyer, T.P., Locarnini, R.A., Garcia, H.E., Mishonov, A.V., Baranova, O.K., Weathers, K., Paver, C.R., and Smolyar, I. 2018. World Ocean Atlas 2018, Volume 2: Salinity. NOAA Atlas NESDIS 82, 50 pp.
description: See ReadMe file
description: # Global port environmental data used for environmental distance
 calculations
 [https://doi.org/10.5061/dryad.69p8cz906](https://doi.org/10.5061/dryad.69p8cz906) ## Description of the data and file structure This dataset includes 6,727 global ports, providing geographic coordinates and four environmental variables (mean temperature of the warmest and coldest months, mean monthly temperature, and mean monthly salinity) ### Files and variables #### Variables * PortName: Name of port - AlternativeName: Alternative name for a given port - UNLOCODES: Unique port code - CountryName: Country of port - CountryCode_3Letter: Country abbreviation - Latitude: Decimal degrees - Longitude: Decimal degrees - PortType: Type of port - Temp_Min: Mean temperature (Celsius) of coldest month - Temp_Max: Mean temperature (Celsius) of warmest month - Temp_Annual: Mean annual temperature (Celsius) based on monthly averages - Salinity_Annual: Mean annual salinity (unitless) based on monthly averages - TempSource: Temperature data source - SalSource: Salinity data source - TempSource_Reference: Temperature data reference - SalSource_Reference: Salinity data reference - Temp_Monthly_Jan-Dec: Mean monthly temperature (Celsius) - Salinity_Monthly_Jan-Dec: Mean monthly salinity (unitless) ## Access information Data was derived from the following sources: Keller, R.P., Drake, J.M., Drew, M.B., and Lodge, D.M. 2011. Linking environmental conditions and ship movements to estimate invasive species transport across the global shipping network. Diversity Distrib. 17: 93-102. [https://doi.org/10.1111/j.1472-4642.2010.00696.x](https://doi.org/10.1111/j.1472-4642.2010.00696.x) Locarnini, R.A., Mishonov, A.V., Baranova, O.K., Boyer, T.P., Zweng, M.M., Garcia, H.E., Reagan, J.R., Seidov, D., Weathers, K., Paver, C.R., and Smolyar, I. 2018. World Ocean Atlas 2018, Volume 1: Temperature. NOAA Atlas NESDIS 81, 52 pp. Wanders, N., van Vliet, M.T.H., Wada, Y., Bierkens, M.F.P., and van Beek, L.P.H. 2019. High-resolution global water temperature modelling. Water Resour. Res. 55: 2760-2778. [https://doi.org/10.1029/2018WR023250](https://doi.org/10.1029/2018WR023250) Wang, L., Riseng, C.M., Mason, L.A., Wehrly, K.E., Rutherford, E.S., McKenna, J.E., Castiglione, C., Johnson, L.B., Infante, D.M., Sowa, S., Robertson, M., Schaeffer, J., Khoury, M., Gaiot, J., Hollenhorst, T., Brooks, C.N., and Coscarelli, M. 2015. A spatial classification and database for management, research, and policy making: The Great Lakes aquatic habitat framework. J. Great Lakes Res. 41: 584-596. [http://doi.org/10.1016/j.jglr.2015.03.017](http://doi.org/10.1016/j.jglr.2015.03.017) Zweng, M.M., Reagan, J.R., Seidov, D., Boyer, T.P., Locarnini, R.A., Garcia, H.E., Mishonov, A.V., Baranova, O.K., Weathers, K., Paver, C.R., and Smolyar, I. 2018. World Ocean Atlas 2018, Volume 2: Salinity. NOAA Atlas NESDIS 82, 50 pp.