1. DIESER TEXT DIENT DER NAVIGATION AUSTRO CONTROL FLYING IN THE ALPS PRODUCTS FOR GENERAL AVIATION Erstellt durch: Andreas Pfoser Version: 1.0 Datum: 18. März 2010 Datei: schoenhagen.ppt

2. 2 PRODUCTS PREPARED FOR ALL PARTS OF GENERAL AVIATION (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) –GAMET SECN I (abbreviated plain language) –GAMET SECN II (chart form) charts SIGWX phenomena („low-level significant weather chart“) charts upper W / upper-air T charts QNH / Foehn potential ADDITIONAL PRODUCTS (SPECIALIZED FORECASTS) –GAFOR (visibility / cloud base categories; route segments) –ALPTHERM (atmospheric convection over complex topography) –BALLONMET (specific information for ballooning flights) –TEXT BULLETINS (overview forecasts in german language) MODULAR CONCEPT

3. 3 GAMET SECN I (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Content: –Information on en-route weather phenomena hazardous to low-level flights up to FL 200 –Information of meteorological conditions which could adversely affect general aviation airfields Area of interest: FIR Wien divided into three sub-areas (climatological aspects) MODULAR CONCEPT

4. 4 GAMET SECN I (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Times of Issue / Validity Periods: –4 times per day, every 4 hours –Forecasts are disseminated one hour prior to the beginning of validity period –issue 05 lct:validity period 06/12 lct –issue 09 lct:validity period 10/16 lct –issue 13 lct:validity period 14/20 lct –issue 17 lct:validity period 18/24 lct –during the night (23/06 lct) density of traffic operating at low levels is not sufficient to warrant the issuance of GAMET information MODULAR CONCEPT

5. 5 GAMET SECN I (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Phenomena included in GAMET SECN I: –SFC WSPDwidespread surface gusts > 30 kt (below 3000 ft amsl) –SFC VISwidespread surface visibility < 5 km (below 3000 ft amsl) –SIGWXisol-frq/obsc/embd/sql TS/TSGR; hvy DS/SS; VA –MT OBSCwidespread mountain obscuration I. frontal system / low-pressure-area / upper-level-trough II. ST obscuring pre-alps mt passes or small peaks inside basins III. ovc CU along ridges, base blw peaks / IV. orographic clouds –SIG CLDisol-sql CB/TCU or widespread low stratus < 1500 ft agl –ICEmod or sev (except for occurring in convective clouds) –TURBmod or sev (except for occurring in convective clouds) –MTWmod or sev downdrafts due to mountain waves MODULAR CONCEPT

6. 6 GAMET SECN I (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Examples: MODULAR CONCEPT

7. 7 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Set of Fixed Time Forecast Charts: –Forecasts of Upper Wind and Upper-Air Temperature –Forecasts of SIGWX phenomena –special chart „Foehn potential“ MODULAR CONCEPT

8. 8 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) SIGWX phenomena  LLSWC („ALPFOR AUSTRIA“): –covers layer between GND and FL200 –issue 05 lct:charts 08 lct + 12 lct + outlook 16 lct –issue 09 lct:charts 12 lct + 16 lct + outlook 20 lct –issue 13 lct:charts 16 lct + 20 lct + outlook 24 lct –issue 17 lct:chart 20 lct + outlook 24 lct –issue 21 lct:chart tomorrow 08 lct + outlook 12 lct –pressure centres, fronts –cloud information, precipitation, vis-reducing phenomena –surface visibility, surface wind –weather phenomena hazardous to low-level flights en-route MODULAR CONCEPT

9. 9 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) SIGWX phenomena  LLSWC („ALPFOR AUSTRIA“): MODULAR CONCEPT CB tops FL390 TCU tops FL220 height of base and top layer amount: FEW 1/8-2/8 SCT 3/8-4/8 BKN 5/8-7/8 OVC 8/8 characteristics: CONS continuous LYR layered EMBD embedded types: CU, SC, ST, NS, AS, AC, AC LEN

10. 10 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) SIGWX phenomena  LLSWC („ALPFOR AUSTRIA“): MODULAR CONCEPT types of icing: OPA rime type of ice formation CLA clear type of ice formation MX mixed type of ice formation types of turbulence: LLVL low level RDGE ridge LEE leeward CAT clear air turbulence

11. 11 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) ALPFOR AUSTRIA Examples: MODULAR CONCEPT winter weather in the eastern alps

12. 12 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) ALPFOR AUSTRIA Examples: MODULAR CONCEPT foehn and thunderstorms in the eastern alps

13. 13 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Upper Wind and Upper-Air Temperature / Freezing-Level: issue 11-12 lct: 17 charts „barbs“ for 48hr in advance 17 charts „tabular“ for 48hr in advance MODULAR CONCEPT issue 23-24 lct: 17 charts „barbs“ for 48hr in advance 17 charts „tabular“ for 48hr in advance

14. 14 GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) Forecast QNH („FOEHN-Potential“): issue 11-12 lct / 23-24 lct: 17 charts „barbs“ for 48hr in advance 17 charts „tabular“ for 48hr in advance MODULAR CONCEPT

15. 15 GAFOR (VFR) Content: –Forecasts of visibility / cloud base categories O, D, M, X for well-defined route segments (published in the AIP) –routes are „adverse weather routes“ –cloud base information refers to reference heights (mountain passes) Times of Issue / Validity Periods: –3 to 4 times per day, every 3 hours –issue 0730 lct:validity period 08/14 lct –issue 1030 lct:validity period 11/17 lct –issue 1330 lct:validity period 14/20 lct –issue 1630 lct:validity period 17/23 lct (only during spring and summer) MODULAR CONCEPT

16. 16 GAFOR (VFR) Content: –3 time-segments of 2 hours additional information: weather phenomena, which are expected to cause the adverse visibility / cloud base conditions –TS –SN –RA (mod or hvy) –SHSN –SHRA (mod or hvy) –LC –FG –BR MODULAR CONCEPT

17. 17 GAFOR (VFR) Examples: MODULAR CONCEPT mountainous effects: windward side  snowing leeward side  flying

18. 18 ALPTHERM (Gliding/Hanggliding/Paragliding) „a model for atmospheric convection over complex topography“ –mountainous characteristics: valley volume effect, area/height-distributions, elevated convection, various albedo, mountain-valley wind systems –initialization with model profiles and local surface observations –coupled with high-resolution mesoscale modell MODULAR CONCEPT - 31 regions (climatological aspects) - 2-day-forecasts - 3 updates in the morning - 1 update in the late afternoon

19. 19 ALPTHERM (Gliding/Hanggliding/Paragliding) Content: –quality of thermals (based on forecast PFD) –strength of thermals (mean climb rates) –onset of thermals –height of the thermal updraughts –possible updraughts for ridge soaring MODULAR CONCEPT

20. 20 ALPTHERM (Gliding/Hanggliding/Paragliding) Content: MODULAR CONCEPT time-altitude cross sections of - predicted climb rates - depth of the CBL - possible ridge soaring updraughts diurnal evolution of - cumulus clouds (base and tops) - stratiform clouds (low, middle, high levels  cloud amount) - hazards (thunderstorms, rain/snow, turbulences)

21. 21 BALLONMET (Ballooning) Content: –clouds, moisture –surface wind and detailled upper wind –turbulences, inversion layer –precipitation –surface temperature MODULAR CONCEPT common ballooning sites

22. 22 BALLONMET (Ballooning) Content: hazards: –thunderstorms, convective showers –thermals –strong surface gusts –fog MODULAR CONCEPT common ballooning sites

23. 23 ADDITIONAL MATERIAL (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning) MODULAR CONCEPT

24. DIESER TEXT DIENT DER NAVIGATION THANK YOU ALL FOR LISTENING !! AUSTRO CONTROL i FLYING IN THE ALPS PRODUCTS FOR GENERAL AVIATION THANK YOU ALL FOR LISTENING !! Erstellt durch: Andreas Pfoser Version: 1.0 Datum: 18. März 2010 Datei: schoenhagen.ppt andreas.pfoser@austrocontrol.at