EASA ATPL METEROLOGY EXAM 2023-2024 ACTUAL EXAM
300 QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |AGRADE
Severe CAT likely to occur when: – ANSWER- wind in jet core > 110
kts
vertical shear > 5 kts \/ 1000 ft
horizontal shear > 45 kts \/ 150 NM
\u201ewhere would you expect to encounter the greatest intensity of CAT
associated with polar jet stream?” – ANSWER- along the axis of the jet
stream core to the left (looking downstream)
aka on the depression side
\u201eCAT should be anticipated when: – ANSWER- a sharp trough area aloft
is present, even though the wind speeds may be considerably less than
that of jet stream winds”
Mountain Waves
favorable conditions: – ANSWER- 1) wind speed > 20 kts at top of mtn
2) wind blows at right angles to mtn range (or within 30\u00b0 of this)
3) wind speed increases with altitude, but wind direction remains more
or less constant (strong waves are often associated with jet streams)<\/p>\n\n\n\n
4) atmosphere stable (preferably stratified in several thin stable layers)
and especially if there is an inversion or isothermal present just above
the level of the mountain top, with less stable air above and below,
between crest level and a few thousand feet above
Rotor – ANSWER- – occur in lower turbulent zone that stretches from
surface downwind of the mountain and up to a height of about 1000-
2000ft above mountain top<\/p>\n\n\n\n
temperature relation crossing W-E Jetstream from S-N – ANSWERbelow JS core altitude -> temp falls EASA ATPL METEROLOGY EXAM 2023-2024 ACTUAL EXAM300 QUESTIONS AND CORRECT DETAILED ANSWERS(VERIFIED ANSWERS) |AGRADESevere CAT likely to occur when: – ANSWER- wind in jet core > 110ktsvertical shear > 5 kts \/ 1000 fthorizontal shear > 45 kts \/ 150 NM\u201ewhere would you expect to encounter the greatest intensity of CATassociated with polar jet stream?” […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-112191","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/112191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=112191"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/112191\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=112191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=112191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=112191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
at JS core altitude -> temp constant
above JS core altitude -> temp rises
Remember<\/em>
colder air to left looking downwind => below tropopause => wind speed
increases with height
colder air to right looking downwind => above tropopause => wind
speed decreases with height
equatorial jet stream – ANSWER- – occurs in summer between JUNE
and AUGUST as
result of monsoon climate<\/p>\n\n\n\n\n
facts about typical polar front jet stream – ANSWER- – wind accelerates
with increasing alt up to level where temp contrast between air masses is
equalized<\/li>\n\n\n\n
the same on both sides of the frontal surface<\/li>\n\n\n\n
max wind speed of polar front jet stream found \u2026 – ANSWER- on warm
side of frontal zone at altitudes just above the tropopause of the cold air
(about 1000-5000 ft below the warm tropopause)
<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"