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The Interactive Grid Analysis and Display System (IGrADS) for the U.S. Armed Forces. Major Lee A. Byerle Chief, Warfighter Support Development Team HQ Air Force Weather Agency Lee.Byerle@afwa.af.mil 5 Oct 05. IGrADS. IGrADS developed at Air Force Weather Agency (AFWA)

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slide1

The Interactive Grid Analysis and Display System (IGrADS) for the U.S. Armed Forces

Major Lee A. Byerle

Chief, Warfighter Support Development Team

HQ Air Force Weather Agency

Lee.Byerle@afwa.af.mil

5 Oct 05

igrads
IGrADS
  • IGrADS developed at Air Force Weather Agency (AFWA)
    • Available over JAAWIN (AFWA’s website)
      • https://weather.afwa.af.mil/igrads.html
  • Background
    • MM5 declared operational at AFWA Oct 97
    • Up to 30 theaters covering 98% of world’s landmasses
      • Large numbers (> 250,000) of visualizations were pre-staged daily from AFWA’s MM5 output
    • Problem: excessive amount of processing needed to create visualized products
interactive solution
Interactive Solution
  • Challenge: we needed to create an interactive tool
    • Allow forecasters to create the charts they needed
    • This tool would allow large amounts of processing power to be freed up for production and developmental efforts
  • Initial interactive capability - IMaST
    • Unveiled on JAAWIN in May 2001
    • Limited to meteograms and forecast skew-Ts
    • Immensely popular with forecasters and customers
  • Expanded capability - IGrADS
    • Fielded in Feb 2002
      • Capability expansion continues through the present
    • Available models and product types expanded significantly beyond IMaST
slide5

Model Choices

{

https://weather.afwa.af.mil/igrads.html

available meteorological models
Available MeteorologicalModels
  • AFWA MM5 (will transition to WRF)
  • AFWA Diagnostic Cloud Forecast (DCF) Algorithm
  • AFWA Stochastic Cloud Forecast Model (SCFM)
  • NCEP GFS
  • NCEP Eta (becoming NAM)
  • US Navy NOGAPS
  • US Navy COAMPS
  • UKMO (Middle East Theater)
slide7

{

Product Choices

https://weather.afwa.af.mil/igrads.html

products offered by igrads
Products offered by IGrADS
  • Meteograms (MM5, Advect Cloud, GFS, Eta, NOGAPS, COAMPS, and UKMO)
  • MM5 Army low-level meteograms
  • MM5 severe weather meteogram
  • GFS meteograms (0 to 180 hour and 192-384 hour)
  • GFS and NOGAPS stratospheric meteograms
  • User defined meteograms
  • Forecast skew-Ts
products offered by igrads continued
Products offered by IGrADS(continued)
  • Vertical cross-sections
  • Multiple leg cross-sections
  • Forecast maps (color filled, contoured, both)
  • Alphanumeric output products
  • Four-panel forecast maps (five different types)
  • AFWA Worldwide Merged Cloud Analysis
igrads alphanumeric products
IGrADS AlphanumericProducts
  • MM5-based
    • Forecast vertical profile
    • “FOUS” bulletin (similar to Eta and NGM output from NCEP)
    • RAOB bulletin
    • Precision airdrop wind profile
    • Chemical downwind message
    • Basic wind message
    • Field artillery forecast
  • GFS-based
    • “FOUS” bulletin (0 to 180 hours at 3 hour intervals)
    • RAOB bulletin
    • Precision airdrop wind profile
    • Chemical downwind message
    • Basic wind message
  • COAMPS-based
    • Basic wind message
igrads map display options
IGrADS Map Display Options
  • World Map centered on Prime Meridian
  • World Map centered on International Dateline
  • All MM5 theater maps
  • United Kingdom Meteorological Office (UKMO) Middle East domain
  • Continental United States (CONUS) NAM (Eta) domain
  • Coupled Ocean/Atmospheric Mesoscale Prediction System (COAMPS) Middle East domain
mm5 user defined meteogram northern siberia
MM5 User Defined MeteogramNorthern Siberia

Winds, temperatures, clouds, RH, and icing

Sea Level Pressure and 1000-500 mb thickness

1000-850 mb and 850-700 mb thicknesses

Surface winds (knots)

Surface visibility (km)

3-hour precipitation, amount and type

Surface temperature, DP, and wind chill

vertical cross section hurricane frances valid 30 aug 04 0000z directly through the eye
Vertical Cross SectionHurricane Frances (Valid 30 Aug 04/0000Z), directly through the eye

Relative Humidity

FL winds

Vertical velocity

Potential temperature

Turbulence

slide19

{

Display Options

Forecast Maps submenu

slide21

Forecast Map (IGrADS)

SLP, 1000-500 mb Thickness Chart, Winds, Precip

forecast map super typhoon chaba valid 25 aug 04 1200z south of japan
Forecast Map Super Typhoon Chaba(valid 25 Aug 04/1200Z), south of Japan

Surface winds (knots) (color-filled)

Sea Level Pressure contours (mb) (black)

standard forecast 1 four panel map heavy snow freezing rain over ohio 24 dec 04
Standard Forecast #1 Four-Panel MapHeavy snow, freezing rain over Ohio, 24 Dec 04

700 mb heights and RH (contours),

and 700 mb vertical velocity (color filled)

500 mb heights (dm),

500 mb temperatures (C), and 500 mb relative vorticity (color filled)

Sea level pressure (mb), 1000-500 mb thickness (dm), and 3-hour precipitation (color filled)

925 mb heights, winds (barbs), and RH (color filled)

winter weather four panel forecast map heavy snow freezing rain over ohio 24 dec 04
Winter Weather Four-Panel Forecast MapHeavy snow, freezing rain over Ohio, 24 Dec 04

1000-850mb thickness,

925 mb winds, and 3-hr snowfall

1000-500 mb thickness,

700 mb winds, and 3-hr precipitation

Surface temperature and precipitation type (color filled)

Surface visibility, surface winds, and wind chill temperature

severe weather four panel forecast map central south africa forecast valid 5 oct 05 1800z
Severe Weather Four-Panel Forecast MapCentral South Africa,forecast valid 5 Oct 05/1800Z

Total Totals

SWEAT Index

CAPE

K-Index

slide33

MM5 48-Hour Accumulated

Snow Forecast,

20-22 April 2002

slide36

CONUS 15-km

Vertical Cross Section Options

slide37

B

A

A

B

slide38

D

C

C

D

igrads customer feedback
IGrADS Customer Feedback
  • Kadena AB, Okinawa: “ … we often use your site for planning missions up to 72 hours out. The forecasts aid greatly in our decision making during the planning and execution phases of our missions (air refueling, air delivery, low level flight, short field landings, and basic point A to point B logistics flights).”
  • Thule AB, Greenland: “I usually print out a vertical cross-section and include it with the pre-takeoff briefing package. Aircrews rave about the product.”
  • Captain deployed in Afghanistan: “IGrADS has been the decisive difference we need. I use it extensively … especially the Afghan 5 km window for the model skew-Ts.”
summary
Summary
  • IGrADS is the DoD’s premier interactive weather forecast visualization tool
    • Available through AFWA’s JAAWIN website
    • Wide range of meteorological models
    • Broad array of products (visualizations and alphanumeric)
    • Product availability for the entire globe
  • Continued expansion of capabilities ongoing
    • Additional models, observational data
    • Space weather forecast and observed products
    • Accelerated product creation and delivery

https://weather.afwa.af.mil/igrads.html