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Meteorologi
3.6.6.1 Strålingståge ......................................................................................... 287
3.6.6.2 Advektionståge .................................................................................... 288
3.6.6.3 Orografisk tåge ..................................................................................... 289
3.6.6.4 Fronttåge .............................................................................................. 289
3.6.6.5 Lav tåge ................................................................................................ 290
3.6.6.6 Sørøg .................................................................................................... 290
3.6.7 Tågedis, tørdis, dug og rim ...................................................................... 291
3.6.7.1 Tågedis ................................................................................................. 291
3.6.7.2 Tørdis .................................................................................................... 291
3.6.7.3 Dug og rim ............................................................................................ 291
3.6.8 Sigtbarhed – begreber og terminologi .................................................... 292
3.6.8.1 Skyhøjde / skybase ............................................................................... 292
3.6.8.2 Vertikal visibility (VER VIS) ................................................................... 293
3.6.8.3 Meteorologisk sigtbarhed .................................................................... 293
3.6.8.4 Sigtbarhedsmål .................................................................................... 294
3.6.8.5 Sigtbarhed ved start og landing ........................................................... 295
3.6.8.6 Banesynsvidde (RVR) ............................................................................ 295
3.6.8.7 Årsager til nedsat sigtbarhed ............................................................... 295
3.6.8.8 Fare ved flyvning i dårlig sigt ................................................................ 296
3.7 Luftmasser .................................................................................................. 297
3.7.1 Luftmassetyper ........................................................................................ 298
3.7.1.1 Luftmassernes karakteristika ............................................................... 298
3.7.2 Ændring af en luftmasse .......................................................................... 299
3.7.2.1 Sommervejr .......................................................................................... 299
3.7.2.2 Vintervejr ............................................................................................. 301
3.8 Fronter ........................................................................................................ 304
3.8.1 Varmfront og koldfront ............................................................................ 305
3.8.1.1 Varmfront ............................................................................................. 305
3.8.1.2 Koldfront .............................................................................................. 305
3.8.2 Frontsymboler .......................................................................................... 305
3.8.3 Varmesektor ............................................................................................. 306
3.8.4 Frontskyer ................................................................................................. 306
3.8.5 Dannelsen af lavtryk ................................................................................. 309
Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 210
