An essay on Weather maps

Weather lay discloses, or synoptic charts, croup appearrather complicated. tho when you know what thelines and symbols slopped you will and these useseasy to use. One of the most great features of the atmosphereand one that is genuinely frequently measurementd is commit drive, or the lean of the standard atmosphere. All credit line hasweight. mend we cant feel it because we ar constantlysurrounded by it, sensitive instrumentscalled barometers can measure the post gouge. Atmospheric air pressure measurements aregiven in hectopascals (hPa). several(prenominal) times a day,air pressure is read at assorted weather stationsaround the world. Many observers around Australiameasure air pressure and other(a) aspects ofthe weather and send them to the national andregional centres of the Bureau of Meteorology. These observations are combine with othersmade from satellites, aircraft, ships at sea and inother countries to prepare weather maps. The main(prenominal) lines that we search on weather mapsare called isobars. Isobars are lines joining placesof enough pressure. Highs and abjectsThe average weight of air at sea post is 1013 hPa. If air pressure measures more than 1013 hPa, it isusually an area of sinking air and is generally anarea of full(prenominal) pressure. High pressure systems areoften called anticyclones. You can see from the plank contrary what a high pressure system lookslike and the left-handed bang the air travelsin a high pressure system. The despicable air, knownas wind, endlessly carry ons come forward of a high and into a junior-gradepressure system. If air pressure measures below 1013 hPa, it isusually an area of rising air, and is generally anarea of low pressure. Low pressure systems areoften called cyclones. You can see in our put back whata low pressure system looks like and the clockwisedirection the air travels in a low pressure system. Pressure systems generally touch off from west toeast as they move acros s Australia and around theworld. As they mov! e they change in shape andoften change their latitudinal position. PRESSURE SYSTEMSSometimes people confuse pressure systems withair bargaines. An air push-down list is a large section of theatmosphere containing air with a kindred temperatureand moisture content. A line drawn on aweather map to show where two different airmasses meet is called a front. on that point are two maintypes of fronts: insensate fronts and warm fronts. When we look at the direction of winds on aweather map we can work out if temperatures arewarmer, cooler or about conventionality for the time ofyear.

In Australia, a northerly wind (c oming fromthe north) means warmer than conventionality temperaturesand a southeasterlyerly wind, cooler than normaltemperatures. Easterlies and westerlies meantemperatures that are around normal. motive MASSES AND FRONTSWINDS AND TEMPERATURESAMPLE STUDYSnowfalls to the south and centralranges of south-eastern AustraliaThe weather map below for 30 July 2003 shows a stone-cold front moving into the Tasman Sea that hasbrought a `cold snap to south-eastern Australia. Cold and moist air from the ocean to the south ofAustralia locomote across Tasmania, Victoria andNew South Wales bringing spacious snowfalls tothe high parts of the tablelands and ranges. Over 40 centimetres of snow barbaric in the SnowyMountains and therewere falls of up to20 centimetres overthe CentralTablelands. Whilesuch snowfalls arewelcome news forskiers during thewinter months,they often createdifficult conditionsfor graziers whomust take earlyprecautions to protecttheir sheep from thevery cold weather. Weath er map, 30 July 2003http://www.icms.com.au/inqua2007/! abstract/192.htmhttp://www.google.com.au/search?hl=en&q=pattern+climate+and+ve lounge aroundation+in+Australia&meta= If you regard to get a full essay, order it on our website: OrderCustomPaper.com

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