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October 19, 2006 “Friends/Partners in Aviation Weather” Forum NBAA Convention – Orlando

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Progress in Turbulence Information Clinton Wallace NOAA/NWS Aviation Weather Center Kansas City, Missouri. October 19, 2006 “Friends/Partners in Aviation Weather” Forum NBAA Convention – Orlando. Operational NWS Turbulence Products. SIGMETs

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Progress in Turbulence InformationClinton WallaceNOAA/NWS Aviation Weather Center Kansas City, Missouri

October 19, 2006

“Friends/Partners in Aviation Weather” Forum

NBAA Convention – Orlando

operational nws turbulence products
Operational NWS Turbulence Products
  • SIGMETs
    • Issued by AWC, AAWU, and WFO Honolulu for Severe Turbulence or Convection over domestic and oceanic airspace
  • AIRMETs
    • Issued by AWC, AAWU, and WFO Honolulu for Moderate Turbulence for domestic airspace
  • MIS/CWA
    • Issued by CWSUs and specialized for needs of the ARTCC
  • Significant Weather Forecasts
    • 100-FL630: 24 hour forecast issued by AWC and WAFC London for moderate or severe turbulence for entire globe
    • Low-Level: Issued by AWC and AAWU for moderate or greater turbulence
  • Graphical Turbulence Guidance
    • Supplementary and restricted automated product issued by AWC every hour for turbulence intensity between FL200-FL450
gfa g airmet implementation
GFA/G-AIRMET Implementation
  • GFA Work Group
    • Government/Industry group est. by FPAW
  • G-AIRMET
    • Nov 2006: Standardize Text AIRMET
    • Feb 2007: Experimental G-AIRMET
    • Oct 2007: G-AIRMET Supplementary/Unrestricted
    • ~Oct 2008: G-AIRMET Primary
  • GFA
    • 2009-2011
  • More GFA discussion during Cross-Cutting Issues this afternoon
turbulent weather in graphical forecast for aviation gfa
Turbulent Weather in Graphical Forecast for Aviation (GFA)
  • Graphical AIRMET (Includes all criteria in AIRMET Tango)
    • Moderate Turbulence
      • Bases and Tops
    • Low-Level Wind Shear
    • Surface Winds in excess of 30 knots
  • Full GFA
    • Mountain Waves
    • Surface Winds in excess of 20 knots
g airmet example

0600 UTC Turbulence –High Level

0600 UTC Turbulence – Low Level

0300 UTC Turbulence –High Level

0000 UTC Turbulence – Low Level

0000 UTC Turbulence –High Level

0300 UTC Turbulence – Low Level

0900 UTC Turbulence – Low Level

0900 UTC Turbulence –High Level

1200 UTC Turbulence –High Level

1200 UTC Turbulence – Low Level

G-AIRMET Example

More Demos and Information at

http://aviationweather.gov/testbed/g-airmet/

0000-1200 UTC All Turbulence

dispatcher web pirep submit
Dispatcher Web PIREP Submit
  • 20500 PIREPs submitted in last year via AWC Web PIREP submission form
  • 77% (15800) of those Turbulence reports
  • Organizations wishing to participate should contact AWC

Major Contributors

Alaska Airlines

Southwest Airlines

Delta Airline

Continental Airlines

https://aviationweather.gov/exp/pirep_submit

turbulence in significant meteorological weather forecasts
Turbulence in Significant Meteorological Weather Forecasts
  • ICAO Annex 3 requirement
  • 24 Hour Global Forecast
  • Includes Moderate and Severe Turbulence
  • July 2006 became a DIGITAL product
    • Distributed in a digital format BUFR
    • Objects which are being integrated in user systems
wafs global turbulence grids
WAFS Global Turbulence Grids
  • Goal is to replace current WAFS SIGWX-Medium (FL100-450) forecasts charts by 2010.
  • Global gridded Icing, Turbulence, and Convective Clouds by US and UK
  • US development by NOAA Environmental Modeling Center (EMC)
    • Funded by FAA Requirements and Policy
    • Plan to develop and test by Feb 2008
    • UK\'s being evaluated by IATA and IFALPA
  • 2008-09: ICAO & WMO plan to conduct user training on the use of gridded WAFS products.
short range ensemble forecasts sref
Short-Range Ensemble Forecasts (SREF)
  • Experimentally produced by NOAA Environmental Modeling Center (EMC)
  • Combination of multiple models
    • Slightly different initial conditions or model configurations/parameterizations.
  • Level of uncertainty, the most likely forecast outcomes, and probabilities of those outcomes
  • Turbulence probabilities
    • Light-Moderate, Moderate, & Severe
    • Ellrod Index
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