NAV Brasil Aeronautical Meteorologist case studies
NAV Brasil Aeronautical Meteorologist · Put your knowledge to work in context.
The NAV Brasil Aeronautical Meteorologist credential is aimed at meteorologists who want to work within Brazil's air navigation system, producing and interpreting the weather information that keeps flights safe. NAV Brasil, the state enterprise responsible for air navigation services, hires and accredits professionals who staff meteorological offices, brief pilots and operators, and issue aerodrome forecasts, warnings and trend information. The NAV Brasil Aeronautical Meteorologist case studies are 5 cases and about 2,677 words.
1Convective Initiation over the Serra do Mar and the 18:00 UTC TAF Window
It is 15:30 UTC on a summer afternoon at SBGR (Guarulhos, São Paulo). A surface cold front lies over northern Paraná, moving northeast at 15 kt.
629 words, about 3 min2Cross-Equatorial Jet, ITCZ Shift, and a Tropical Atlantic Route Decision
An operator plans a flight from SBBE (Belém) to GVAC (Sal, Cape Verde) at flight level 410 on 15 August. The 00:00 UTC analysis shows the ITCZ band displaced about 5° north of its climatological position over the tropical Atlantic, with scattered deep convection between 5°N and 12°N.
549 words, about 3 min3Annex 3 Trend Forecast, Amendment Criteria, and a Volcanic Ash Encounter
A MET office at an international airport issues a trend forecast appended to a METAR at 12:00 UTC: BECMG 1212/1214 4000 TSRA BKN008. The prevailing conditions at 12:00 UTC are 9999 SCT020 24/18 Q1012.
523 words, about 3 min4Model Spread, Ensemble Probability, and a Low-Ceiling Forecast for a Coastal Aerodrome
A forecaster must issue a TAF for SBFL (Florianópolis) valid 00:00–06:00 UTC. The 12:00 UTC global ensemble shows a bimodal solution: 60 % of members produce a marine stratocumulus deck with a ceiling of 300–500 ft and visibility of 2,000–4,000 m, while 40 % produce a clear night with a ceiling above 3,000 ft.
493 words, about 2 min5Portuguese METAR Text, Annex 3 Units, and a Dispatcher's Query
A Brazilian dispatcher sends a query in Portuguese asking whether a flight may depart for an aerodrome whose latest METAR reads: SBCT 121800Z 12008KT 8000 -RA BKN012 OVC025 19/17 Q1015. The dispatcher writes that the aerodrome has a 300 ft decision height and asks whether the conditions are above minima and whether the trend forecast is required.
483 words, about 2 min