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  MADIS Radiosonde Quality Control

MADIS Radiosonde Quality Control

This page provides a detailed description of the quality control (QC) processing and data structures for the radiosonde dataset. For a general overview of MADIS quality control, click here.

Automated Quality Control

Level 1 QC checks are considered the least sophisticated, level 2 the most sophisticated checks. The following table lists the radiosonde variables* that are QC'ed, and click here for the checks that are used:


  MADIS Radiosonde Variables with QC
  ----------------------------------------------------------------------------------------------------
  Code       Name                  Max    Level | Level 1: |                  Level 2:                
                                Possible        |          |                                          
                                QC Level        | Validity | Super-Adiabatic  Hydrostatic  Wind-Shear 
                                                |          |   Lapse Rate                             
  ----------------------------------------------------------------------------------------------------

  Integrated Sounding            Sig    Mandatory
  -------------------            ---    ---------
  
  DD        wind direction        1         2        X
  FF        wind speed            1         2        X
  U         u wind component      1         2        X
  V         v wind component      1         2        X
  T         air temperature       2         2        X             X            X + correction
  TV        virtual temperature   2         2        X             X            X + correction
  TD        dewpoint temperature  1         1        X
  RH        relative humidity     1         1        X
  Q         specific humidity     1         1        X
  DPD       dewpoint depression   1         1        X
  AH        absolute humidity     1         1        X
  WVMR      water vapor mix ratio 1         1        X
  P         pressure              1         1        X
  HT        geopotential height   1         2        X                          X + correction
 
  Mandatory Levels
  ----------------

  DDMAN     wind direction        2                  X                                            X
  FFMAN     wind speed            2                  X                                            X
  UMAN      u wind component      2                  X                                            X
  VMAN      v wind component      2                  X                                            X
  TMAN      air temperature       2                  X             X            X + correction
  TVMAN     virtual temperature   2                  X             X            X + correction
  TDMAN     dewpoint temperature  1                  X
  RHMAN     relative humidity     1                  X
  QMAN      specific humidity     1                  X
  DPDMAN    dewpoint depression   1                  X
  AHMAN     absolute humidity     1                  X
  WVMRMAN   water vapor mix ratio 1                  X
  PMAN      pressure              1                  X
  HTMAN     geopotential height   2                  X                          X + correction

  Significant Levels
  ------------------

  TSIG      air temperature       2                  X             X
  TVSIG     virtual temperature   2                  X             X
  TDSIG     dewpoint temperature  1                  X
  RHSIG     relative humidity     1                  X
  QSIG      specific humidity     1                  X
  DPDSIG    dewpoint depression   1                  X
  AHSIG     absolute humidity     1                  X
  WVMRSIG   water vapor mix ratio 1                  X
  PSIG      pressure              1                  X
  HTSIG     geopotential height   1                  X
 
  Wind Levels
  -----------

  DDWIND    wind direction        1                  X
  FFWIND    wind speed            1                  X
  UWIND     u wind component      1                  X
  VWIND     v wind component      1                  X
  PWIND     pressure              1                  X
  HTWIND    geopotential height   1                  X

  Maximum Wind Levels
  -------------------

  DDMXWND   wind direction        1                  X
  FFMXWND   wind speed            1                  X
  UMXWND    u wind component      1                  X
  VMXWND    v wind component      1                  X
  PMXWND    pressure              1                  X
  HTMXWND   geopotential height   1                  X

  Tropopause Levels
  -----------------

  DDTROP    wind direction        1                  X
  FFTROP    wind speed            1                  X
  UTROP     u wind component      1                  X
  VTROP     v wind component      1                  X
  TTROP     air temperature       2                  X             X
  TVTROP    virtual temperature   2                  X             X
  TDTROP    dewpoint temperature  1                  X
  RHTROP    relative humidity     1                  X
  QTROP     specific humidity     1                  X
  DPDTROP   dewpoint depression   1                  X
  AHTROP    absolute humidity     1                  X
  WVMRTROP  water vapor mix ratio 1                  X
  PTROP     pressure              1                  X
  HTTROP    geopotential height   1                  X


Last updated 16 March 2017