Resources

Thermodynamic Diagrams of Current Soundings

• Skew-T Diagrams:
  • from OhioState: explanation , soundings & indices for all US & Canadian sites .
  • from NCAR: soundings, indices & hodographs for all US & Canadian sites .
  • from UNISYS: explanation , soundings, indices & text for US sites .
  • from FSU: soundings & indices for N. America .
  • from TAMU: soundings for N. America .
  • from NIU: soundings & indices for N. America .
  • from UWy: soundings & indices for N. America .
• Emagram / Pseudoadiabatic Chart:
  • from U.Wash: UIL, OTX, SLE, MFR .
  • from NIU: soundings in N. America .
• Stuve Diagrams
  • from AMS DataStreme Project: blank diagram , soundings for selected US sites .
  • from FSU: soundings .
  • from NIU: sondings in N. America .
  • from UWy: soundings & indices for N. America .
• Tephigrams
  • selected sites in Canada: Edmonton AB , Alert NWT , Montreal PQ .
• Hodographs of wind:
  • from FSU .
• Plots soundings on the fly (world-wide) :
  • UWy: soundings (Skew-T, Stuve, hodograph) by clicking on map.
    • with explanations of indices .
  • NIU : soundings (Skew-T, emagram, Stuves, or hodographs) by entering stn ID.
• Arctic soundings (U Wisc.-Milwaukee)
• Archived sounding data ( FSL )
• Station IDs for Rawinsonde sites:
  • Map showing Station IDs in any continent ( UWy )
  • Map showing Station IDs ( letter & number IDs) N. America ( FSU )
  • Map showing NWS sounding sites ( NWS )
  • List of Station ID names and numbers in N. America ( FSU )
  • Station Look-up from NWS .

Blank Thermo Diagrams (useful for hand plotting)

• Blank graphs, useful for hand-plotting of real soundings:
  • skew-T gif1 / gif_color / pdf_color (from Riddle, UCSD/Scripps)
  • tephigram gif / pdf (from Evans, U. Colorado)
  • Stuve gif1 / gif2 / pdf2 (from R. Fovell, UCLA)
  • emagram gif1 / pdf1 / gif3 / tiff3 / pdf3(from R. Stull, UBC)
  • emagram (zoomed for PBL) gif / tiff / pdf (from R. Stull, UBC)
  • theta-Z gif / pdf (from R. Stull, UBC)
  • theta-Z (zoomed for PBL) gif / tiff / pdf (from R. Stull, UBC)
• Sounding data in ascii text form (for plotting on blank thermo diagrams)
  • from: AMS , UIL , UWy , FSU ,

Tutorials and Manuals

• Tutorials:
  • What is a radiosonde? Brief Intro , historical photos .
  • From the UK: Comparison of tephigram, skew-T, Stuve thermo diagrams .
  • Tutorial on how to read tephigrams ( UNBC , U.Leeds UK , Project Atmos-Canada.pdf )
  • From FSU: How to read Upper Air codes .
• USA Handbook #3 on Rawinsonde and Pibal Observations .
• NWS Rawinsonde network info .
• Software to plot soundings ( from UCAR )

Stability & Severe Weather Indices

• Excellent explanation (NWS Louisville)
• Stability indices and weather radar (NWS)
• Definitions (Sirvatka COD)
• Explanations and Definitions (Australian Severe Weather Assoc.)
• Definitions and Interpretation (Ohio State U) , and contour plots .
• Live excellent contour plot forecasts of many severe storm indices over most of US (Texas A&M U) with definitions and explanations how to interpret.
• Live contour plots of stability indices, and definitions - (UNISYS)
• Live contour plots of stability indices for Canada (EC)
• Forecast contour plots of total-total index and precipitable water (COLA/IGES) .
• Live vertical profiles (upper air soundings) with tables of indices & definition - (UNISYS)
• Live satellite-derived indices (NWS Western Region) and from CIMSS

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