, Scotland is stopped by an overlying layer of warmer air. In meteorology, an inversion is a deviation ... inversion, i.e. an increase in temperature with height, or to the layer inversion layer ... An inversion can lead to pollution such as smog being trapped close to the ground, with possible adverse effects on health. An inversion can also suppress convection by acting as a cap . If this cap ... thunderstorms . Temperature inversion can notoriously result in freezing rain in cold climates. Normal ... is the inversion seen near the ground at 1 2 kilometers C D . Under certain conditions, the normal ... air mass. This type of inversion occurs in the vicinity of warm front s, and also in areas of oceanic ... is typically present below the inversion cap. An inversion is also produced whenever radiation from ... shut off any convection which may be present in the cooler air mass. This is known as a capping inversion ... is actually quite warm, but is still denser and usually cooler than the lower part of the inversion layer capping it. Subsidence inversion An inversion can develop aloft as a result of air gradually ... layer can gradually lift the inversion layer to higher altitudes, and eventually, even pierce it, producing ... smog and dust under the inversion quickly taints the sky reddish, easily seen on sunny days. Consequences of a thermal inversion Image Superior mirage of a boat 2.jpg 220px Fata Morgana mirage Fata Morgana of a ship is due to an inversion thumb Image Sha1993 smog wkpd.jpg thumb right Winter smoke ... Temperature inversion causing fog over upper rhine valley at night.jpg thumb right Temperature inversion ... inversion1 2005 Nov 11.jpg thumb right Temperature inversion in Bratislava , viewing the top of Nov ... of phenomena are associated with a temperature inversion. The air becomes stiller, hence the air becomes ... in cities where many pollutants exist. Inversion effects occur frequently in big cities such as Mumbai ... by hills and mountains that together with the inversion effect bottle caps the air in the city ... more details
keywords in meteorology Atmospheric conditions Absolute stable air Temperature inversion Dine s compensation ...About other uses of the root word meteor Meteor disambiguation the work by Aristotle Meteorology Aristotle Distinguish Metrology Weather Atmospheric sciences Meteorology is the interdisciplinary scientific ... in meteorology did not occur until the eighteenth century. The nineteenth century saw breakthroughs ... illuminate and are explained by the science of meteorology. Those events are bound by the variables ... in the troposphere . ref Meteorology. The Encyclop dia Britannica.15th Ed. 2005. ref ref Byers, Horace. General Meteorology. New York McGraw Hill, 1994. ref Different spatial scales are studied to determine how systems on local, region, and global levels impact weather and climatology. Meteorology ... sciences . Meteorology and hydrology compose the interdisciplinary field of hydrometeorology .... Meteorology has application in many diverse fields such as the military, energy production, transport, agriculture and construction. The word wiktionary meteorologymeteorology is from Ancient ... . History Main Timeline of meteorology File AlpineRainbow.jpg thumb left Parhelion Parhelion sundog at Savoie In 350 BC, Aristotle wrote Meteorology Aristotle Meteorology . ref http www.infoplease.com ce6 weather A0859595.html Development of Meteorology ref Aristotle is considered the founder of meteorology. ref http yale.edu ynhti curriculum units 1994 5 94.05.01.x.html Meteorology by Lisa Alter ref One of the most impressive achievements described in the Meteorology is the description of what ... Meteorology url http etext.library.adelaide.edu.au a aristotle meteorology year 2004 publisher ... of Plants , in which he deals with the application of meteorology to agriculture during the Muslim ... journal first H. Howard last Frisinger title Aristotle s Legacy in Meteorology journal Bulletin of the American ... ancient.htm magnus Ancient and pre Renaissance contributors to Meteorology , National Oceanic ... more details
Wiktionarypar inversion TOCright Inversion may refer to Inversion music , a term with various meanings in music theory and musical set theory Inversion prosody , the reversal of the order of a foot s elements Inversion law , reincorporation by a firm in a different country e.g. to save taxes Inversion in postcolonial theory , a discursive strategy gesture in cultural and subaltern studies Roller coaster inversion , which turns riders upside down Inversion therapy , the practise of hanging upside down heart higher than head for supposed health benefits Science and mathematics Chromosomal inversion , where a segment of a chromosome is reversed end to end Inversion transformation , a conformal transformation Inversion kinesiology , movement of the sole towards the median plane Inversion geology , the relative uplift of a previously basinal area resulting from local shortening, in structural geology Inversionmeteorology , air temperature increasing with height Inversion evolutionary biology , a hypothesis about the evolution of the dorsoventral axis in animals Inversion linguistics , a term referring to a number of different distinct grammatical constructions found in the languages of the world Island of inversion , the island of inversion , a group of elements with abnormal nuclear shell structure Method of inversion, the image of a harmonic function in a sphere or plane see Method of image charges , also, Kelvin transform for an n dimensional generalization. Nitrogen inversion , a chemical process in which a trigonal nitrogen containing structure turns inside out Population inversion ... than in lower energy states Computer science Inversion discrete mathematics , items that are out of order in a list Priority inversion , in which a low priority task holds a shared resource that a high priority task needs Literature, music and entertainment Inversions novel by Iain M Banks Inversion ... disambiguation Inverter disambiguation Sexual inversion disambig ca Inversi ... more details
Cleanup date September 2007 Polar meteorology focuses on weather in environments dominated by extremely low temperatures. Surface temperature inversion are typical of polar environments and lead to the katabatic wind phenomenon. The vertical temperature structure of polar environments tends to be more complex than in mid latitude or tropical climates. External links http polarmet.mps.ohio state.edu Polar Meteorology at The Ohio State University http weather.uwyo.edu polar Polar Meteorology at The University of Wyoming http www.weather.nps.navy.mil psguest polarmet Polar Meteorology at The Naval Post Graduate School http polar.aos.wisc.edu The American Meteorological Society Committee on Polar Meteorology and Oceanography Category Meteorology climate stub ... more details
A shortwave or shortwave trough is an embedded kink in the Trough meteorology trough Ridge meteorology ridge pattern. This is the opposite of Rossby wave longwaves , which are responsible for Synoptic scale meteorology synoptic scale systems, although shortwaves may be contained within or found ahead of longwaves and range from the Mesoscale meteorology mesocale to the synoptic scale. Shortwaves are most frequently caused by either a cold pool or an upper level Weather front front . Corresponding weather and effects Shortwaves are often associated with warm WAA or cold air advection CAA , which influence temperature. Due to the way they curve the air that moves around them and the way air moves away from them, shortwaves produce positive curvature vorticity and positive shear vorticity, respectively. Ahead of a shortwave there is large scale lift due to divergence from positive vorticity advection PVA . This lift often sparks Precipitation meteorology precipitation . In a Convective inhibition capped environment , the lift generated by a shortwave may cool the inversion layer through Adiabatic cooling Adiabatic heating and cooling adiabatic cooling , allowing for deep, moist Atmospheric convection convection . External links http www.theweatherprediction.com habyhints 131 What is a shortwave trough? . Haby s Hints. http nws.noaa.gov glossary index.php?word shortwave trough Shortwave Trough . National Weather Service NWS Glossary. Category Synoptic meteorology and weather climate stub ... more details
Orographic lift Precipitation meteorology Precipitation Temperature inversion Thermal Vertical draft ...expand outline see also Index of meteorology articles Image Isabel eye.jpg thumb right 350px Eye of Hurricane Isabel from the International Space Station, September 15, 2003. Meteorology is the interdisciplinary ... which illuminate and are explained by the science of meteorology. Those events are bound by the variables ... weather is located in the troposphere . ref Meteorology. The Encyclopedia Britannica.15th Ed. 2005. ref ref Byers, Horace. General Meteorology. New York McGraw Hill,1994. ref The following outline is provided as an overview of and topical guide to meteorology Essence of meteorology Main article Meteorology Climate &ndash the average and variations of weather in a region over long periods of time. Meteorology &ndash the interdisciplinary scientific study of the atmosphere that focuses on weather ... of all the phenomena in a given atmosphere at a given time. Branches of meteorology Microscale meteorology &ndash the study of atmospheric phenomena about 1 km or less, smaller than mesoscale, including small and generally fleeting cloud puffs and other small cloud features Mesoscale meteorology ... breezes, squall lines, and mesoscale convective complexes Synoptic scale meteorology &ndash is a horizontal length scale of the order of 1000 kilometres about 620 miles or more Methods in meteorology ... front Wind chill Wind direction Wind speed Instruments and equipment of meteorology Anemometer &ndash ... at various elevations History of meteorology Main articles Meteorology History History of meteorology and Timeline of meteorology Weather forecasting History History of weather forecasting &ndash prior ... Invest meteorology &ndash An area with the potential for tropical cyclone development Atmospheric ... oscillation Atlantic multidecadal oscillation Atmospheric river Block meteorology Block Cold wave Chinook ... weather phenomena Meteorology scholars Pennsylvania State University Leaders in meteorology Image ... more details
Dablink This article is about the meteorology meteorological phenomenon . For other uses, see Ridge . Unreferenced auto yes date December 2009 A ridge is an elongated region of relatively high atmospheric pressure , the opposite of a Trough meteorology trough . See also Geopotential height Block meteorology Trough meteorology Category Atmospheric thermodynamics DEFAULTSORT Ridge Meteorology Climate stub ca Dorsal meteorologia de R cken Meteorologie fr Cr te barom trique nl Rug meteorologie ja no Rygg meteorologi pt Crista meteorologia simple Ridge meteorology fi Korkeapaineen sel nne ... more details
Inversion layer may refer to one of the following Inversionmeteorology , a layer within which an atmospheric property is inverted, i.e., its change is deviated from the normal pattern Inversion layer semiconductors , a layer in a semiconductor material where the type of the majority carriers is change to the opposite under certain conditions disambig ... more details
Misoscale is the scale of Meteorology meteorological phenomena that ranges in size from 40 meters to about 4 kilometers. It includes rotation within a thunderstorm . See also Synoptic scale Mesoscale meteorology Mesoscale storm scale Microscale meteorology Microscale References http www.weather.gov glossary index.php?letter m National Weather Service Glossary Category Storm Category Weather Category Mesoscale meteorology climate stub es Misoescala ... more details
Forensic meteorology is the process of reconstructing weather events for a certain location. This is done by acquiring local weather reports, radar and satellite images, and eyewitness accounts. Forensic meteorology is most often used in court cases for either insurance companies or a murder investigation. Category Meteorology Category Forensic disciplines forensics stub climate stub es Meteorolog a forense ... more details
Microscale meteorology is the study of short lived Earth s atmosphere atmospheric phenomena smaller than mesoscale meteorology mesoscale , about 1 km or less. ref cite web url http amsglossary.allenpress.com glossary search?query micrometeorology title AMS Glossary of Meteorology work Micrometeorology accessdate 2008 04 12 publisher American Meteorological Society ref These two branches of meteorology are sometimes grouped together as mesoscale and microscale meteorology MMM and together study all phenomena smaller than Synoptic scale meteorology synoptic scale that is they study features generally too small to be depicted on a weather map . These include small and generally fleeting cloud puffs and other small cloud features. ref cite book last Rogers first R. title A Short Course in Cloud Physics publisher Butterworth Heinemann location Oxford year 1989 isbn 0750632151 pages 61 62 ref Microscale meteorology controls the most important mixing and dilution processes in the atmosphere. ref cite book last Pereira first Norman title Air and Noise Pollution Control publisher Humana Press location Totowa year 1979 isbn 0896030016 pages 200 ref Important topics in microscale meteorlogy include heat transfer and gas exchange between soil, vegetation, and or surface water and the atmosphere caused by near ground turbulence . Measuring these transport processes involves use of micrometeorological or flux towers. Variables often measured or derived include net Electromagnetic radiation radiation , sensible heat flux, latent heat flux , ground heat storage, and fluxes of trace gases important to the atmosphere , biosphere , and hydrosphere . See also Eddy covariance FluxNet Synoptic scale meteorology Mesoscale meteorology Storm scale Misoscale meteorology Scale spatial Surface weather analysis Wind engineering References reflist Category Microscale meteorology climate stub fr Microm t orologie nl Micrometeorologie nn Mikrometeorologi ru uk ... more details
saved book title Meteorology subtitle An Overview cover image WOA05 sea surf TMP AYool.png cover color ffffff Meteorology An Overview Meteorology Outline of meteorologyMeteorology Earth s atmosphere Atmosphere of Earth Atmospheric pressure Water vapor Cloud List of cloud types Climate Weather analysis and forecasting Weather Surface weather observation Weather forecasting Numerical weather prediction Temperature Dew point Humidity Pressure system Weather front Wind speed Convection Albedo Weather events Wind Fog Precipitation meteorology Precipitation Rain Snow Hail Storm Winter storm Severe weather Tropical cyclone Aurora astronomy Aurora Weather instruments and observation Surface weather analysis Weather balloon Weather buoy Weather radar NEXRAD Weather satellite Weather Services National Weather Service National Oceanic and Atmospheric Administration Aviation meteorology Visibility Pilot report METAR Automated airport weather station Visual meteorological conditions Instrument meteorological conditions Category Wikipedia books on natural sciences ... more details
In meteorology, Souther is a strong wind coming from the south. ref cite web url http www.thefreedictionary.com souther title Souther Definition by the Free Online Dictionary, Thesaurus and Encyclopedia publisher The Free Dictionary date 2006 01 01 accessdate 2011 03 12 ref It s also a term widely used in maritime jargon to indicate, in fact, generally strong wind from the south . References references Category Meteorology it Souther meteorologia ... more details
Mesoscale meteorology is the study of weather systems smaller than synoptic scale systems but larger than Microscale meteorology microscale and storm scale cumulus systems. Horizontal dimensions generally range from around 5 kilometers to several hundred kilometers. Examples of mesoscale weather systems are sea breeze s, squall line s, and mesoscale convective complex es. Vertical velocity often equals or exceeds horizontal velocities in mesoscale meteorological systems due to nonhydrostatic processes such as buoyant acceleration of a rising thermal or acceleration through a narrow mountain pass. Subclasses Mesoscale Meteorology is divided into these subclasses Orlanski, 1975 Meso gamma 2 20 km, deals with phenomena like thunderstorm convection, complex terrain flows at the edge to Microscale meteorology microscale , also known as storm scale Meso beta 20 200 km deals with phenomena like sea breezes, lake effect snow storms Meso alpha 200 2000 km fronts, deals with phenomena like squall lines, mesoscale convective systems MCS , tropical cyclones at the edge of synoptic scale Mesoscale boundaries As in surface weather analysis synoptic frontal analysis , literature about mesoscale analysis uses cold, warm, and occluded fronts on the mesoscale to help describe phenomena. On weather maps mesoscale fronts are depicted as smaller and with twice as many bumps or spikes as the synoptic variety. In the United States , opposition to the use of the mesoscale versions of fronts on weather analyses, has led to the use of an overarching symbol a trough symbol with a label of outflow boundary ... See also Synoptic scale meteorology storm scale Storm scale Microscale meteorology Misoscale meteorology Scale spatial Surface weather analysis Outline of meteorology References reflist Further reading ... their history and their application to forecasting, in Ray, P. S., ed., Mesoscale Meteorology ... links http meted.ucar.edu mesoprim mesodefn print.htm Category Mesoscale meteorology climate ... more details
Infobox Government agency agency name Bureau of Meteorology nativename nativename a nativename r logo ... Barry Grear AO chief1 position Chair, Bureau of Meteorology Advisory Board chief2 name Dr Greg Ayers chief2 position Director of Meteorology parent agency Department of Sustainability, Environment, Water ... The Bureau of Meteorology is an Executive Agency of the Australia n Government of Australia Government ... in 1906 under the Meteorology Act, and brought together the States and territories of Australia state ... recording responsibilities to the Bureau of Meteorology on 1 January 1908. ref name ABC cite web url ... 20. Meteorology publisher National Archives of Australia date url http www.naa.gov.au naaresources ... Image berrimah radar darwin nt.jpg thumb left 181px Berrimah radar The Bureau of Meteorology is the main ... and Satellite sections. ref cite web title Bureau of Meteorology Head Office 700 Collins Street publisher Bureau of Meteorology date url http www.bom.gov.au inside new accom 700 Collins.shtml ... Darwin Airport Met Office.jpg thumb 181px Darwin Airport office The Australian Bureau of Meteorology ... warnings WarningsInformation TC Advice.shtml Tropical Cyclone Advices , Bureau of Meteorology, 2009 ... Bureau of Meteorology title Tropical Cyclone Names accessdate 2008 08 08 ref The regional offices ... of Meteorology in the Bureau of Meteorology is Dr Greg Ayers. Deputy Directors are Dr Rob Vertessy ... of Meteorology are class wikitable style font size 100 bgcolor lightgrey Director Years Henry ... reflist External links http www.bom.gov.au Bureau of Meteorology main page http www.bom.gov.au nmoc ... fam Federation and Meteorology the history of meteorology in Australia http www.top500.org site history 254 Bureau of Meteorology on Top500.org National Meteorological Organisations Category Climate ... agencies in Oceania de Bureau of Meteorology fr Bureau of Meteorology id Badan Meteorologi Australia nn Bureau of Meteorology pl Australian Bureau of Meteorology pt Bureau of Meteorology uk ... more details
Image US Air Force Weather specialist.jpg thumb Military weather specialist in US Military meteorology is meteorology applied to military purposes, by armed forces or other agencies. It is one of the most common fields of employment for meteorologists. World War II brought great advances in meteorology as large scale military land, sea, and air campaigns were highly dependent on weather, particularly forecasts provided by the Royal Navy , Met Office and USAAF for the Normandy landing Weather Normandy landing and Strategic bombing during World War II strategic bombing . University meteorology departments grew rapidly as the military services sent cadets to be trained as weather officers. Wartime technological developments such as radar also proved to be valuable meteorological observing systems. More recently, the use of satellite s in space has contributed extensively to military meteorology. Military meteorologists currently operate with a wide variety of military units, from aircraft carriers to special forces. See also Image Rating Badge AG.jpg right Navy Weather Symbol Captain 28military 29 Navy CAPT Homer A. McCrerey , United States Naval Academy USNA Class of 1942 United States Pacific Fleet Fleet Meteorologist and oceanographer FNMOC 1967 1972 Fleet Numerical Meteorology and Oceanography Center National Climatic Data Center http lwf.ncdc.noaa.gov oa climate research cag3 cag3.html NCDC U.S. Climate at a Glance Commander, Naval Meteorology and Oceanography Command Naval Meteorology and Oceanography Command Aerographer s Mate Pacific Disaster Center 1992 East West Center humanitarian aide & disaster assistance Humanitarian response to the 2004 Indian Ocean earthquake ... of U.S. military satellite systems for meteorology at http www.globalsecurity.org space systems ... inst w weather.asc External links https www.fnmoc.navy.mil U.S. Navy Fleet Numerical Meteorology and Oceanography ... nav Category Basic meteorological concepts and phenomena Category Military technology Meteorology ... more details
ERICA , or the Experiment on Rapidly Intensifying Cyclones over the Atlantic , is a scientific field project that started in the winter of 1988 1989. ref name FcstOceanicCyc cite web title Forecasting Oceanic Cyclones At The NOAA author Joseph M. Sienkiewicz Scott Prosise Anthony Crutch publisher http www.opc.ncep.noaa.gov Ocean Prediction Center NOAA date 2004 05 14 url http www.opc.ncep.noaa.gov SOO papers FORECASTING 20OCEANIC 20CYCLONES 20AT 20THE 20NOAA.pdf accessdate 2006 10 29 ref Its aims were to better understand the processes involved in rapid cyclogenesis , and so improve understanding and forecasting of the situations that cause it. References Reflist DEFAULTSORT Erica Meteorology Category Meteorology research and field projects climate stub pt Experiment on Rapidly Intensifying Cyclones over the Atlantic ... more details
Orphan date September 2008 Giovanni meteorology Web interface that allows users to analyze NASA s gridded data from various satellite and surface observations. Giovanni provides researchers with the capability to examine data on atmospheric chemistry, atmospheric temperature, water vapor and clouds , atmospheric aerosols , Precipitation meteorology precipitation , and ocean chlorophyll and surface temperature . The primary data consist of global gridded data sets with reduced spatial resolution. Basic analytical functions performed by Giovanni currently are carried out by the Grid Analysis and Display System GrADS . The GES DISC Interactive Online Visualization ANd aNalysis Infrastructure Giovanni allows to explore satellite data using sophisticated analyses and visualizations. Giovanni allows access to data from multiple remote sites, supports multiple data formats including Hierarchical Data Format HDF , HDF EOS , network Common Data Form netCDF , GRIdded Binary GRIB , and binary, and multiple plot types including area, time, Hovmoller, and image animation. References J. G. Acker and G. Leptoukh, Online Analysis Enhances Use of NASA Earth Science Data , EOS, January 9, 2007, vol. 88, pages 14 and 17 the American Geophysical Union s http www.agu.org weekly newspaper . External links http disc.sci.gsfc.nasa.gov giovanni Category Meteorological data and networks pl Giovanni meteorologia ... more details
Unreferenced date December 2009 Aerography is the production of weather charts. The information is supplied by radiosonde observations, principally. Constant pressure charts are routinely constructed at standard air pressures. Standard air pressures are 850, 700, 500, 400, 300, 250, and 200 millibar s hectopascal s hPa SI . Weather charts are sometimes drawn at lower air pressures that occur above 40,000 feet 12 km . The lines of equal air pressure are called isobars . Isotherms are the lines of equal air temperature. DEFAULTSORT Aerography Meteorology Category Weather prediction Climate stub ... more details
other uses2 DBZ lowercase title dBZ meteorology File Sturmfront auf Doppler Radar Schirm.jpg thumb right The scale of dBZ values can be seen along the bottom of the image. dBZ stands for decibels of Z. It is a meteorology meteorological measure of equivalent reflectivity Z of a radar signal reflected off a remote object. ref http www.srh.noaa.gov jetstream append glossary d.htm NWS JetStream Weather Glossary D s Bot generated title ref The reference level for Z is 1 mm sup 6 sup meter m sup 3 sup , which is equal to 1 m sup 3 sup . It is related to the number of drops per unit volume and the sixth power of drop diameter. Reflectivity of a cloud is dependent on the number and type of hydrometeor s, which includes rain, snow, and hail, and the hydrometeors size. A large number of small hydrometeors will reflect the same as one large hydrometeor. The signal returned to the radar will be equivalent in both situations, so a group of small hydrometeors is virtually indistinguishable from one large hydrometeor on the resulting radar image. A meteorologist can determine the difference between one large hydrometeor and a group of small hydrometeors as well as the type of hydrometeor through knowledge of local weather condition contexts. One dBZ scale of rain 40 heavy 24 39 moderate 8 23 light 0 8 Barely anything dBZ values can be converted to rainfall rates in millimetres per hour using this formula math frac mathrm mm mathrm hr left frac 10 dBZ 10 200 right 5 over 8 math ref cite web url http www.desktopdoppler.com help nws nexrad.htm rainfall 20rates title NWS NEXRAD accessdate November 7, 2010 ref References reflist Decibel state uncollapsed Meteorological equipment state uncollapsed Category Radar meteorology Category Units of measure Climate stub fr D cibel Z ... more details
amsglossary.allenpress.com glossary search?id capping inversion1 Capping Inversion AMS Glossary of Meteorology http education.arm.gov nsdl Library glossary.shtml Capping inversion Capping Inversion National Science Digital Library Category Boundary layer meteorology category atmospheric thermodynamics ...File Kreuzberg Rhoen .JPG thumb right A capping inversion limits the vertical development of clouds. In this image taken near Kreuzberg Rh n , the inversion is below the top of the mountain tops. A capping inversion is an elevated Inversionmeteorologyinversion layer that caps a convective planetary boundary layer boundary layer . The boundary layer is the part of the atmosphere which is closest to the ground. Normally, the sun heats the ground, which in turn heats the air just above it. Thermal s form when this warm air rises into the cold air warm air is less density dense than cold air , a process known as convection . A convective layer such as this has the potential for cloud formation, since condensation occurs as the warm air rises and cools. An inversion layer is when the normal temperature warm air below, cold air above profile is reversed, creating a stable configuration of dense, cold air sitting below lighter, warm air. An elevated inversion layer is thus a region of warm air above a region of cold air, but higher in the atmosphere generally not touching the surface . A capping inversion occurs when there is a boundary layer with a normal temperature profile warm air rising into cooler air and the layer above that is an inversion layer cooler air below warm air . Cloud formation from the lower layer is capped by the inversion layer. If the capping inversion layer or cap is too strong too close to the surface , it will prevent thunderstorms from developing. A strong cap can result in fog gy conditions. However, if the air at the surface is convective instability unstable enough, strong updrafts can be forced through the capping inversion. This selective process ... more details
Ridge high or Trough meteorology low pressure system becomes stuck in place due to a lack of steering ... meteorology Trough meteorology References reflist Category Anticyclones da Blokering meteorologi fr ... more details
the quickest. ref Glossary of Meteorology June 2000 . http amsglossary.allenpress.com glossary search ... search?p 1&query haboob&submit Search title Haboob date June 2000 author Glossary of Meteorology ... of tropical cyclones. References reflist 2 good article Category Meteorology Category Severe weather and convection Category Synoptic meteorology and weather simple Outflow meteorology ... more details
GPS meteorology refers to the use of the effect of the atmosphere on the propagation of the Global Positioning System s GPS radio signals to derive information on the state of the lower, neutral atmosphere. There are currently two main operational techniques in use in GPS meteorology GPS limb sounding from orbit, and GPS water vapour monitoring. GPS water vapour monitoring It is well known that the propagation delay caused by the atmosphere on microwaves is some 20 times stronger for water vapour as for all other dry constituents of the atmosphere, like nitrogen, oxygen, argon or carbon dioxide. This is due to the polar nature of the water molecule. As a result, if it is possible to determine the total atmospheric delay by GPS, one can subtract out the calculated contribution by the well mixed dry gasses from the measured air pressure at the surface, and obtain a measure for the absolute water vapour content of the atmosphere, integrated from surface to space. This is also referred to as total precipitable water vapour . What makes it possible to determine the total atmospheric delay, is its known dependence of the zenith or elevation angle of the satellite. If math z math is the zenith angle, the propagation path delay is proportional to math frac 1 cos z math . This unique signature makes it possible to solve separately for the zenith delay in GPS computations also solving for station coordinates and receiver clock delays. Nowadays water vapour estimates are generated routinely in real time latency measured in hours by permanent geodesy geodetic GPS networks existing in many parts of the world. Water vapour is a very important gas for meteorological and climatological studies, because of the latent heat it carries in transport. Additionally it is a powerful greenhouse gas. The GPS technique is especially valuable because it measures absolute water vapour content or partial ... for the Global Positioning System Links and references http www.paroscientific.com gpsmet.htm GPS meteorology ... more details
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