PLT2427

24.5 Aircraft Observations and Reports There are three kinds of aircraft observations: PIREPs, Aircraft Reports (AIREP), and Volcanic Activity Reports (VAR).Both PIREPs and AIREPS have two types:• Routine PIREPs and Urgent PIREPs.• Routine AIREPs and Special AIREPs. PIREPs are reported by the pilot (or aircrew), while AIREPs can either be reported by the pilot or generated from sensors onboard t..

24.4.3.13.5 Wind Shift Wind shift is coded in the following format: the remark identifier WSHFT, followed by the time the wind shift began. The contraction FROPA is entered following the time if there is reasonable data to consider the wind shift was the result of a frontal passage. A space is between the remark identifier and the time and, if applicable, between the time and the frontal passage..

17.2.1 Convective Turbulence. Convective turbulence is turbulent vertical motions that result from convective currents and the subsequent rising and sinking of air. For every rising current, there is a compensating downward current. The downward currents frequently occur over broader areas than do the upward currents; therefore, they have a slower vertical speed than do the rising currents.Conve..

1. 기상레이더 가. 반사전파를 수신=> 방향, 거리, 반사전파의 강도 측정 나. 탑재 레이더의 파장은 3cm, 기지 레이더는 5, 10cm 다. 기상 레이더는 목표물의 위치 + 높은 정도의 반사강도로 측정할 수 있어야됨 라. 레이더에서 발사한 전파의 반사파를 echo라 하며, 강도가 증가하면 일반적으로 기상요소의 강도 증가 마. 기온, 습도가 불연속이면 전파 굴절률이 커 산란이 발생 => 강수가 없어도 에코로 시현. 이를 엔젤 에코(angel echo)라 함.2. 보고 형식예) 4TRW +4 : 운량  4/10 T : 강수 형태 뇌우(Thunderstorm)RW : 강수 형태 : 소나기(rain shower)+ : 강수 강도 : 강함(heavy)