1. 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. MODULAR CONCEPT ADDITIONAL PRODUCTS (SPECIALIZED FORECASTS)
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)

3. MODULAR CONCEPT
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)

4. MODULAR CONCEPT
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

5. MODULAR CONCEPT
GAMET SECN I (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning)
Phenomena included in GAMET SECN I:
SFC WSPD widespread surface gusts > 30 kt (below 3000 ft amsl)
SFC VIS widespread surface visibility < 5 km (below 3000 ft amsl)
SIGWX isol-frq/obsc/embd/sql TS/TSGR; hvy DS/SS; VA
MT OBSC widespread 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 CLD isol-sql CB/TCU or widespread low stratus < 1500 ft agl
ICE mod or sev (except for occurring in convective clouds)
TURB mod or sev (except for occurring in convective clouds)
MTW mod or sev downdrafts due to mountain waves

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

7. MODULAR CONCEPT
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“

8. MODULAR CONCEPT
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 lct + outlook 16 lct
issue 09 lct: charts 12 lct lct + outlook 20 lct
issue 13 lct: charts 16 lct lct + outlook 24 lct
issue 17 lct: chart 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

9. height of base and top layer
MODULAR CONCEPT
GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning)
SIGWX phenomena  LLSWC („ALPFOR AUSTRIA“): 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. MODULAR CONCEPT
GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning)
SIGWX phenomena  LLSWC („ALPFOR AUSTRIA“):
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. MODULAR CONCEPT
GAMET SECN II (IFR light, VFR, Gliding/Hanggliding/Paragliding, Ballooning)
ALPFOR AUSTRIA Examples:
winter weather in the eastern alps

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

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

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

15. MODULAR CONCEPT 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 lct: validity period 08/14 lct
issue lct: validity period 11/17 lct
issue lct: validity period 14/20 lct
issue lct: validity period 17/23 lct (only during spring and summer)

16. MODULAR CONCEPT 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

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

18. MODULAR CONCEPT 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
31 regions (climatological aspects)
2-day-forecasts
3 updates in the morning
1 update in the late afternoon

19. MODULAR CONCEPT 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

20. MODULAR CONCEPT ALPTHERM (Gliding/Hanggliding/Paragliding) Content:
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. MODULAR CONCEPT BALLONMET (Ballooning) Content: clouds, moisture
surface wind and detailled upper wind
turbulences, inversion layer
precipitation
surface temperature
common ballooning sites

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

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

24. 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