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114 METOC
METOC
Term | Definition |
---|---|
How does Naval Oceanography support the Information Dominance mission? | weather affects all areas of information dominance. Collection capabilities can be adversely affected by the weather |
US Naval Observatory (USNO) | responsible for astronomical data and standard of time |
Joint Typhoon Warning Center (JTWC) | Responsible for issuing tropical cyclone warnings for Pacific and Indian Oceans |
Naval Oceanography Operations Command (NOOC) | responsible for advising the impact of ocean and atmospheric conditions in every theater and operation |
Fleet Numerical Meteorology and Oceanography Center (FNMOC) | Provides relevant and timely worldwide meteorology and oceanography support to US and coalition forces |
Naval Oceanographic Office (NAVO) | maximizes sea power by applying relevant oceanographic knowledge in support of US national security |
Geospatial Operational Environmental Satellites (GOES) | weather forecasting GOES 10: 60 degrees, South America GOES 11- 135 degrees, western US satellite GOES 12- 75 degrees, eastern portion of US to west coast of Africa GOES 13- 105 Degrees west, backup for 11 and 12 |
Polar Operational Environmental Satellite (POES) | Next generation circles every 100 minutes, collect global data daily, 6 in orbit |
Defense Meteorological Satellite Program (DMSP) | low Earth orbiting satellites provided the military with important environmental information |
National Polar Operational Environmental Satellite System (NPOESS) | next generation of low earth orbiting environmental satellites |
Tropical Rainfall Measuring Mission (TRMM) | Satellite designed to help our understanding of the water cycle in the atmosphere |
Wind Direction | average direction from which the wind is blowing during a specified period |
Wind Speed | average rate of air motion |
Temperature | sensible heat in a substance Ambient Air- dry- bulb temperature Wind chill- temp. required under no-wind conditions that equal the cooling effect of air and wind Heat Stress- measure of how hot air feels based on temperature and humidity |
Precipitation | includes all forms of moisture that falls to Earth's surface |
Relative Humidity | ratio of how much water vapor is in the air compared to the amount of water vapor at current temperatures |
Sky Condition | "state-of-the-sky" equates to one of the 27 internationally recognized sky states |
Atmospheric pressure | refers to the pressure exerted by the column of air on any point of the Earth's surface |
Air Mass | large volume of air defined by its temperature and water vapor content |
Cold Front | leading edge of a cooler mass or air, replacing a warmer mass of air |
Warm Front | leading edge of an advancing mass of warm air, separates warm air from the colder air ahead |
Occluded Front | Formed during the process or cyclogenesis when a cold front overtakes a warm front |
Restricted Visibility | obstructions to vision that reduce visibility below 7 statute miles |
Fog | suspension of small visible water droplets in the air |
Sunrise/Sunset | refers to the times when the upper edge of the edge is on the horizon |
Moonrise/ Moonset | computed for exactly for same circumstances as sunrise/sunset. |
Lunar Illumination | amount of light illuminated to the Earth based on the phase of the moon |
Tropical Depression | originate at tropical latitudes winds less than 34 knots |
Tropical Storm | winds less than 34-63 knots |
Hurricane/ Typhoon | Winds of at least 64 knots |
Thunderstorm | form of weather characterized by the presence of lightning and thunder |
Tornado/ Waterspout | violent, dangerous, rotating column of air that is in contact with both the surface and cumulonimbus cloud |
Funnel Cloud | Funnel shaped cloud of condensed water droplets, associated with a rotating column of wind and extending form the base of the cloud but does not reach the surface |
Effect of VISIBILITY on military operations | biggest impact are on shore/ shipboard flight ops |
Effect of PRECIPITATION on military operations | impacts radar performance |
Effect of WINDS on military operations | impact on all operations |
Effect of CLOUD COVER on military operations | impacts all major operations |
Effect of TEMPERATURE and HUMIDITY on military operations | biggest impact on ground troop movement and spec ops. |
Ocean Eddies | independent circulations or rings of cold water or warm water Cold Eddies- south Gulf stream, counterclockwise circulation Warm Eddies- north Gulf stream, drift into Labrador current maintain clockwise rotation |
Bathythermograph | measurement and recording of subsurface water temperature at various depths |
Bioluminescence | Luminescent bacteria that develops in great masses in the sea causing a general bluish green glow in the water |
Sea Wave | wind wave Waves generated by wind in local area |
Wave Height | vertical distance from crest to trough of the wave |
Wave Period | The time, Sec, that it takes for a complete wave cycle to pass a given fixed point |
Swell Wave | seas that have moved out and away from the area in which they were formed |
Sea Surface Temperature | the water temperature close to the surface |
Ebb Tide | current that flows AWAY from the shore with a falling tide |
Flood Tide | current that flows TOWARD the shore with rising tide |
High Tide | Rises over several hours |
Low Tide | Falls over several hours |
Open Ocean Current | continuous, directed movement of ocean water generated by the forces acting upon this flow |
Littoral Current | currents that occur in surf zone and are caused by waves approaching the beach at an angle |
Rip Current | caused by the return flow of water from the beach |
Surf Zone | area from the water up rush outward to the point at which waves first show any indication of breaking |
Spilling Breaker | occur with gentle and flat beach slopes |
Plunging Breaker | breakers occur with a moderate to steep beach slope |
Surging Breaker | normally seen only with a very step beach slope |
Ocean Front | interface between two water masses of different physical characteristics |
Ocean Bottom Topography | Four major physiographic morphological: ridges, trenches, seamounts, and guyots |
Ocean Bottom Composition | various types of sediments mixed with dissolved shells and bones of marine organisms |
Discuss how the ocean surface, subsurface and littoral, impacts the environment to operations | These effects determine the mode and range of sound propagation and thus control the effectiveness of both short-range acoustic systems |
Mixed Thermal Layer | upper layer of the 3-layered ocean model |
Thermocline Thermal Layer | central layer of the 3 layered model |
Deep Thermal Layer | bottom of the layers Constant cold temperatures |
Temperature effect on the transmission of sound in seawater | sound speed decreases at lower water temperatures and increases at higher temperatures |
Pressure effect on the transmission of sound in seawater | pressure increases with depth and sound speed increases with high pressure |
Salinity effect on the transmission of sound in seawater | effect on sound speed is greatest where there is a significant influx of fresh water or where evaporation creates high salinity |
Impact of environmental conditions to geospatial intelligence | METOC data is considered an intelligence layer of the GEOIN information base |
Environmental condition impacts on ASW | sound propagation and detection effectiveness of both short/ long range acoustic systems can be enhanced or degraded |
Environmental conditions impacts on NSW | target restrictions due to time of day, terrain restrictions, adverse weather, seasonal and temperature effects |
Environmental conditions impacts on Mine Warfare | sound speed that is highly dependent upon salinity |
Environmental conditions impacts on Air Defense Operations | ceiling, visibility, temperature, and winds have the greatest effect |
Environmental conditions impacts on Information warfare | forecasts will be generated at the lowest level possible within the battle group |
Environmental conditions impacts on Humanitarian assistance/ disaster relief ops | natural geography and manmade features affect how and where we can supply relief efforts |
Environmental conditions impacts on chemical, biological and nuclear warfare | CBRNE material may disperse chemicals, biological or radiological agents or toxic materials by wind |
Environmental conditions impacts on strike warfare | Visibility, Precipitation, winds, cloud cover and temperature and humidity |
Effects that atmospheric conditions have on electromagnetic propagation of radar beam | Standard refraction, super- refraction, sub- refraction, and trapping |
Standard Refraction | Refraction is the change in direction of a wave due to a change in its speed |
Super- Refraction | Frequently caused by temperature inversions, bends the beam toward the earth and can cause the radar to detect ground returns from distances far exceeding the normal ground clutter area |
Sub- refraction | bends the beam away from the earth |
Trapping | ducting in evaporative ducts, surface- based ducts, and low- elevated ducts, provided the victim radar antennas are within the elevated duct |
Small Craft Weather Conditions | issued in harbors, inland waters and coast OPAREAS |
Gale Weather Conditions | Wind speeds of 35 knots or higher |
Storm Weather Conditions | Wind speeds of 50 knots or higher |
Local Wind Advisory Weather Conditions | Winds exceeding 25 mph |
High Seas Weather Conditions | issued every 12 hours whenever actual heights in an ocean area of N. Hemisphere equal/ exceed 12ft |
Severe Thunderstorm/ Tornado Weather Conditions | issued when weather is favorable for development of severe thunderstorms or tornados |
Thunderstorm Weather Conditions | issued when trained storm spotters or a Doppler weather radar indicate a strong thunderstorm |
Hurricane/ Typhoon Weather Conditions | warning for land, harbor, inland waters, and ocean areas for winds 64 knots or greater |
Extreme Temperature Weather Conditions | Warnings when the heat index and wind- chill are to the extreme |
Heavy Snow Weather Conditions | blizzards, heavy snow, freezing rain or drizzle and sleet |
Flash Flood Weather Conditions | rapid flooding of low- lying areas, rivers, dry lakes, and basins |
Hazardous Surf Weather Conditions | national weather service bulletin advising hazardous wave conditions which could cause injury, death, or property damage |
Tsunami Weather Conditions | Ocean wave generated by a submarine earthquake, volcano, or landslide |
Earthquake Weather Conditions | movement of the Earth's crust cause by the release of stress accumulated along geologic faults or by volcanic activity |
TCOR 5 | Destructive winds within 96 hours |
TCOR 4 | Destructive winds within 72 hours |
TCOR 3 | Destructive winds within 48 hours |
TCOR 2 | Destructive winds within 24 hours |
TCOR 1 | Destructive winds within 12 hours |
Nautical Almanac | Describes a selection or celestial bodies for the purpose of enabling navigators to use celestial navigation at sea |
Astronomical Almanac | Contains solar systems ephermis and catalogs or selected stellar and extragalactic objects |