E
E-MAIL—Electronic mail.
ELECTROMAGNETIC SPECTRUM—The total
range of the various radiation frequencies and
corresponding wavelengths.
ELECTRO-OPTICS—General term used to describe
weapons that make use of electromagnetic energy
in order to function. These systems normally
operate in the visible and infrared portions of the
electromagnetic spectrum.
ESM—Electronic
support
measures.
Radar
surveillance conducted in passive mode designed to
intercept hostile radar emissions.
F
FAA—Federal Aviation Administration.
FALLOUT—Radioactive particles resulting from a
nuclear explosion and descending through the
atmosphere.
FAX—Short form of facsimile, referring to weather
facsimile or a telefacsimile transmission.
FLIB—Forward--looking infrared radar.
FMCR—Fleet multi-channel broadcast.
G
GCCS-M—Global command and communications
system-maritime.
GFMPL—Geophysics fleet mission program library.
Ghz—Gigahertz.
One billion hertz or cycles per
second.
GIGABYTE —A unit of information equal to one
billion bytes.
GOTS—Govemment-off-the-shelf.
GWCS—Global weather communications system.
H
HECTOPASCAL (hPa)—A unit of 100 pascals used
to measure pressure, exactly equivalent to 1
millibar.
HERTZ—A frequency defined as one cycle per
second.
HF—High-frequency. Radio waves between 3 MHz to
30 MHz.
HOMEPAGE—The first page or index of a particular
website.
HTML—Hypertext Markup Language.
I
INFRARED (IR)—The portion of the electromagnetic
spectrum with wave lengths just slightly longer
than visible light energy (thermal energy).
INTERNET—A connection of several wide area
networks. The Internet is also a term that is
synonymous with the World Wide Web.
K
KILOBYTE—A unit of information equal to one
thousand bytes. Also abbreviated as "KB".
KHz—Kilohertz. One thousand hertz or cycles per
second.
L
LAN—Local area network.
LASER—Light amplification by stimulated emission
ofradiation, approximately equal to 1.06 microns.
LCD—Liquid crystal diode. A gray or black display of
numbers or shapes commonly used in electronics.
LPM—Lines per minute. A setting used for HF radio
weather facsimile transmissions.
LUF—Lowest usable frequency.
M
MANOP—Formatted weather message header that
identifies the product type, originator, and area
covered by the product.
MEGABYTE —A unit of information equal to one
million bytes.
MET—U.S. Navy mobile environmental team.
METEOROLOGY—The study of phenomenon of
/the atmosphere.
MHz—Megahertz. One million hertz or cycles per
second.
METMF—U.S. Marine Corps meteorological mobile
facility. Weather personnel who operate USMC
Metvans.
AI-2
