The Global Marine Observations in 10-degree bins are reformatted data from the International Comprehensive Ocean Atmosphere Data Set (ICOADS). ICOADS consists of digital data archived at the National Center for Environmental Information (NCEI). ICOADS is the world's largest collection of marine surface in situ observations with 500+ million unique records from 1662-present. The coverage is global and sampling density varies depending on date and position relative to major ocean shipping routes. ICOADS data are made available through observations that are taken primarily from ships (merchant, ocean research, fishing, navy, etc.) and moored and drifting buoys. Each report contains individual observations of meteorological and oceanographic variables, such as sea surface and air temperatures, winds, pressure, humidity, wet bulb, dew point, ocean waves, and cloudiness. Also available are monthly statistics of observations. After the observations are summarized the data are not interpolated or analyzed to fill data voids. A monthly summary for an area box includes statistics (e.g. mean, median, standard deviation, etc.) for observed and computed variables (e.g. sea surface and air temperature, wind, pressure, humidity, cloudiness, etc.). The original ICOADS data are available in ASCII, native binary, and NetCDF4 formats. The Global Marine data are available in the 10-degree bins in CSV and PDF formats. The PDFs are available for Certification.