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  MADIS Road Weather Information System (RWIS) Quality Control

MADIS Road Weather Information System (RWIS) & Clarus Quality Control


This page provides a detailed description of the quality control (QC) processing and data structures for the RWIS and Clarus dataset.

For a general overview of MADIS quality control, click here.

Automated Quality Control


Clarus Quality Control Checks

MADIS Surface Variables with Clarus QC
--------------------------------------------------------------------------------------------------------------------------------------------
Code       Name                                Max     | Level 1:       |                 Level 2:                              |   Level 3:
                                             Possible  |                |                                                       |
                                             QC Level  | Sensor Climate | Step  Like       Persistence Dewpoint Sounding Precip | IQR Barnes
                                                       | Range  Range   |       Instrument                               Accum  |
--------------------------------------------------------------------------------------------------------------------------------------------
TD        dewpoint temperature                 3         X      X         X                X                                      X   X*
RH        relative humidity                    3         X      X         X                X                                      X   X*
Q         specific humidity                    3         X      X         X                X                                      X   X*
DPD       dewpoint depression                  3         X      X         X                X                                      X   X*
AH        absolute humidity                    3         X      X         X                X                                      X   X*
WVMR      water vapor mixing ratio             3         X      X         X                X                                      X   X*
ALTSE     altimeter                            3         X      X         X                X                                      X   X*
SLP       sea level pressure                   3         X      X         X                X                                      X   X*
P         station pressure                     3         X      X         X                X                                      X   X*
T         air temperature                      3         X      X         X                X                                      X   X*
TV        virtual temperature                  3         X      X         X                X                                      X   X*
DD        wind direction                       3         X      X         X                X                                      X   X*
FF        wind speed                           3         X      X         X                X                                      X   X*
U         u wind component                     3         X      X         X                X                                      X   X*
V         v wind component                     3         X      X         X                X                                      X   X*
VIS       visibility                           3         X      X         X                X                                      X   X*
PCP5M     accumulated precip - 5m              2         X      X         X                X                                      X   X*
PCP15M    accumulated precip - 15m             2         X      X         X                X                                      X   X*
PCP1H     accumulated precip - 1h              2         X      X         X                X                                      X   X*
PCP3H     accumulated precip - 3h              2         X      X         X                X                                      X   X*
PCP6H     accumulated precip - 6h              2         X      X         X                X                                      X   X*
PCP12H    accumulated precip - 12h             2         X      X         X                X                                      X   X*
PCP18H    accumulated precip - 18h             2         X      X         X                X                                      X   X*
PCP24H    accumulated precip - 24h             2         X      X         X                X                                      X   X*
PCPLM     accum. precip - since local midnight 2         X      X         X                X                                      X   X*
PCPUTCM   accum. precip - since UTC midnight   2         X      X         X                X                                      X   X*
PCPCDAY   accum. precip - local calendar day   2         X      X         X                X                                      X   X*
PCPUDAY   accum. precip - user-defined day     2         X      X         X                X                                      X   X*
PCPRATE   precipitation rate                   2         X      X         X                X                                      X   X*
DDGUST    wind dir at gust                     3         X      X         X                X                                      X   X*
FFGUST    wind gust                            3         X      X         X                X                                      X   X*
RDTX      Road temperature - sensor X (1-N)    3         X      X         X     X          X                                      X   X*
RDLFTX    Road liquid freeze temp - sensor X   3         X      X         X     X          X                                      X   X*
RDLCFX    Road liquid chem factor - sensor X   3         X      X         X     X          X                                      X   X*
RDLCPX    Road liquid chem percent - sensor X  3         X      X         X     X          X                                      X   X*
RDLIPX    Road liquid ice percent - sensor X   3         X      X         X     X          X                                      X   X*
RDLDPX    Road liquid depth - sensor X (1-N)   3         X      X         X     X          X                                      X   X*
RDSTAX    Road state - sensor X (1-N)          3         X      X         X     X          X                                      X   X*
RDSUBTX   Road subsurface temp - sensor X      3         X      X         X     X          X                                      X   X*

Quality Control Checks
---------------------------
  2 Sensor range
  3 Climate range
  4 Step
  5 Like Instrument
  6 Persistence
  7 IQR
  8 Barnes -- only if IQR has not enough data to run
  9 Dewpoint
 10 Sounding
 11 PrecipAccum


Last updated 15 March 2017