Integrated Surface Hourly (ISH) Data is digital data set DSI-3505, archived at the National Climatic Data Center (NCDC). The Integrated Surface Hourly (ISH) database is composed of worldwide surface weather observations from about 20,000 stations, collected and stored from sources such as the Automated Weather Network (AWN), the Global Telecommunications System (GTS), the Automated Surface ... Observing System (ASOS), and data keyed from paper forms. Most digital observations are decoded either at operational centers and forwarded to the Federal Climate Complex (FCC) in Asheville, NC, or decoded at the FCC. The US Air Force Combat Climatology Center (AFCCC), the National Climatic Data Center (NCDC), and the US Navy's Fleet Numerical Meteorological and Oceanographical Command Detachment (FNMOD), make up the FCC in Asheville. Each agency is responsible for data ingest, quality control, and customer support for surface climatological data. All data are now stored in a single ASCII format. Numerous DOD and civilian customers use this database in climatological applications. ISH refers to the digital database and format in which hourly and synoptic (3-hourly) weather observations are stored. The format conforms to Federal Information Processing Standards (FIPS). The database includes data originating from various codes such as synoptic, airways, METAR (Meteorological Routine Weather Report), and SMARS (Supplementary Marine Reporting Station), as well as observations from automatic weather stations. The data are sorted by station-year-month-day-hour-minute.