iasLog("criterion : cdo_ei = frontal"); The preconditions are that there must be sufficient moisture in the air. type: "html5", { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, Stationary front is formed when two contrasting air masses converge in such a way that they become parallel to each other and there is no ascent of air. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, }); name: "_pubcid", type: "cookie", expires: 365 { bidder: 'openx', params: { unit: '539971066', delDomain: 'idm-d.openx.net' }}, Sometimes, rainfall is associated with hailstorms. { bidder: 'ix', params: { siteId: '195464', size: [160, 600] }}, name: "pubCommonId", { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, iasLog("criterion : cdo_ptl = entry-lcp"); Since the air motion is retarded at the ground surface due to friction while the free air above has higher velocity and hence the cold front becomes much steeper than warm front. The sun heats the ground and warm air rises. Disclaimer 8. There are frequent changes in cloud types. (And Do They Mate With Other Species). { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, 'increment': 0.05, Stage 4. Prohibited Content 3. { bidder: 'appnexus', params: { placementId: '11654157' }}, The gradually rising warm air along the gently sloping warm front is cooled adiabatically, gets saturated and after condensation precipitation occurs over a rela­tively large area for several hours in the form of moderate to gentle precipitation. The cloud, therefore, being saturated begins to precipitate. (And Process of Formation), How Were the Himalayas Formed? { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, googletag.pubads().disableInitialLoad(); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '1666926', position: 'btf' }}, This process releases the latent heat of condensation, which further heats the air, and the air is forced to go up further. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot2_flex' }}, Where isobars are close together the wind is greatest. }, Wind - winds blow anticlockwise in a depression and wind blows along the isobars. { bidder: 'ix', params: { siteId: '195467', size: [320, 100] }}, They are sending more soldiers to the front. { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, Meaning of Fronts 2. This rain falls steadily for a few hours to a few days. Stage 3. All three fronts are associated with rain. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, var googletag = googletag || {}; type: "html5", { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, Watch the following clip to help make sense of weather fronts. In frontal rainfall, two air mass of different temperature i.e., warm and cold air mass, meet to eventually cause the rainfall. { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, 'min': 8.50, If the aggressive warm air is stable and less humid, condensation occurs at great height and hence much lifting of air is required. : Warm front is that gently sloping frontal surface along which warm and light air becomes active and aggressive and rises slowly over cold and dense air (fig. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, { There is a moister climate on windward sides of slopes while the lee side of a mountainous area is much drier. iasLog("criterion : cdo_pt = entry"); { bidder: 'appnexus', params: { placementId: '11653860' }}, Altar frontal. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, "authorizationFallbackResponse": { 'min': 3.05, Usage explanations of natural written and spoken English, 0 && stateHdr.searchDesk ? iasLog("criterion : cdo_tc = resp"); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, Stage 1. {code: 'ad_leftslot', pubstack: { adUnitName: 'cdo_leftslot', adUnitPath: '/2863368/leftslot' }, mediaTypes: { banner: { sizes: [[120, 600], [160, 600]] } }, { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. googletag.enableServices(); The cloud burdened with water vapor becomes saturated and begins to precipitate on the side of the seaside of the mountain, which is known as the windward side or slope. { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, The moist wind blows in from the sea. By that time, the cloud has already lost most of its moisture and its capacity to take in moisture increases, and hence, these leeward slopes remain dry and rainless. Heavy precipitation occurs but is of short duration. Occluded front is formed when cold front over­takes warm front and warm air is completely displaced from the ground surface (fig. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }}, At the cold front, the cold air forces the warm air to rise aggressively causing its moisture to condense quickly, which results in the formation of cumulonimbus clouds. const customGranularity = { { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, In some desert areas, airborne dust contains enough calcium carbonate to counter the natural acidity of precipitation, and rainfall can be neutral or even alkaline. Content Filtration 6. "authorizationTimeout": 10000 The British Isles commonly experiences this type of rain. var mapping_houseslot_a = googletag.sizeMapping().addSize([963, 0], [300, 250]).addSize([0, 0], []).build(); An extensive transitional zone between two converging air masses is called frontal zone or frontal surface which represents zone of discontinuity in the properties of opposing contrasting air masses. { bidder: 'appnexus', params: { placementId: '11654156' }}, var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); A professional writer, editor, blogger, copywriter, and a member of the International Association of Professional Writers and Editors, New York. A layer separating them is called the front.… dfpSlots['btmslot_a'] = googletag.defineSlot('/2863368/btmslot', [[300, 250], 'fluid'], 'ad_btmslot_a').defineSizeMapping(mapping_btmslot_a).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').setTargeting('ad_group', Adomik.randomAdGroup()).addService(googletag.pubads()); The shape of raindrops was studied by Philipp Lenard in 1898.