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IBM's version of UNIX based on AT&T system V and runs on the IBM RS/6000 system. Domestic Data Plus Data Circuit (DD+)

These meteorological satellites are located 22,000 miles above the earth's equator in a geostationary orbit. These satellites take various types of visible and infrared pictures of the same section of the earth's surface twice an hour. GMT (Greenwich Mean Time) or Z (ZULU) or UTC (Universal Time Coordinated)

Silicon Graphics version of UNIX based on AT&T system V which runs on SGI systems. LDM (The Local Data Manager)

This represents manual subjective coding of NWS radar echoes onto a regular MDR radar grid. Each grid box is 48 km on a side and the resulting grid covers the United States, lower Canada, northern Mexico, and the Gulf of Mexico. Each reporter at a radar site determines the maximum radar echo intensities for each box within its domain and reports th [..]

This is the single tasking operating system most often used on IBM PC, PS/2, and compatible machines. NFS (Network File System)

Sun's version of UNIX based on AT&T System V and runs on Sun workstations. SunOS

This is a network-based graphical user interface developed at MIT that has gained a wide degree of acceptance by a number of hardware/software vendors. Graphics are created using a distributed computing paradigm on a X Window server and distributed over a network to a variety of client X Window machines for display.