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  MADIS Meteorological Surface Quality Control

MADIS Meteorological Surface Quality Control

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

Automated Quality Control

Level 1 QC checks are considered the least sophisticated, level 3 the most sophisticated checks. The following table lists the surface variables* that are QC'ed, and please click here for the checks that are used.


MADIS Surface Variables with QC
------------------------------------------------------------------------------------------------------------------------
Code       Name                                Max     | Level 1: |                 Level 2:               |   Level 3:
                                             Possible  |          |                                        |
                                             QC Level  | Validity |   Internal      Temporal   Statistical |   Spatial
                                                       |          | Consistency   Consistency  Spatial     | Consistency
                                                                                               Consistency |
------------------------------------------------------------------------------------------------------------------------
TD        dewpoint temperature                 3            X            3             X*           X             X*
TD1H      hourly average dewpoint temperature  2            X                          X
TD15M     dewpoint temperature - 15m           3            X                          X            X             X
TD1HCHG   1 hour dewpoint temperature change   1            X
RH        relative humidity                    3            X            3             X            X             X
RH1H      hourly average relative humidity     2            X                          X
RH15M     relative humidity - 15m              3            X                          X            X             X
RH1HCHG   1 hour relative humidity change      1            X
Q         specific humidity                    3            X            3             X            X             X
Q1H       hourly average specific humidity     2            X                          X
Q15M      specific humidity - 15m              3            X                          X            X             X
Q1HCHG    1 hour specific humidity change      1            X
DPD       dewpoint depression                  3            X            3             X            X             X
DPD1H     hourly average dewpoint depression   2            X                          X
DPD15M    dewpoint depression - 15m            3            X                          X            X             X
DPD1HC    1 hour dewpoint depression change    1            X
AH        absolute humidity                    3            X            3             X            X             X
AH1H      hourly average absolute humidity     2            X                          X
AH15M     absolute humidity - 15m              3            X                          X            X             X
AH1HCHG   1 hour absolute humidity change      1            X
WVMR      water vapor mixing ratio             3            X            3             X            X             X
WVMR15M   water vapor mixing ratio - 15m       3            X                          X            X             X
WVMR1HC   1 hour water vapor mixing ratio chng 1            X
ALTSE     altimeter                            3            X                          X            X             X
ALTS15M   altimeter - 15m                      3            X                          X            X             X
AL1HCHG   1 hour altimeter change              1            X
PT3       3 hour pressure change               2            X            2
SLP       sea level pressure                   3            X            1             X            X             X
P         station pressure                     3            X            1             X            X             X
P15M      station pressure - 15m               3            X                          X            X             X
T         air temperature                      3            X            3             X            X             X
T1H       hourly average temperature           2            X                          X
T15M      air temperature - 15m                3            X                          X            X             X
T1HCHG    1 hour temperature change            1            X
ARCHVT    archived temperature                 3            X                          X            X             X
TV        virtual temperature                  3            X            3             X            X             X
TV1H      hourly average virtual temperature   2            X                          X
TV15M     virtual temperature - 15m            3            X                          X            X             X
TV1HCHG   1 hour virtual temperature change    1            X
DD        wind direction                       3            X                          X            X             X
DD1H      hourly average wind direction        1            X
DD15M     average wind direction - 15m         1            X
DDM15M    wind direction mean vector - 15m     1            X
DDU15M    mean unit vector wind dir - 15m      1            X
DD24H     daily average wind direction         1            X
DDSD15M   wind direction std dev - 15m         1            X
FF        wind speed                           3            X                          X            X             X
FF1H      hourly average wind speed            2            X                          X
FF15M     wind speed - 15m                     3            X                          X            X             X
FF24H     daily average wind speed             1            X
FFSD15M   wind speed std dev - 15m             3            X                          X            X             X
U         u wind component                     3            X                          X            X             X
U1H       hourly average u wind component      2            X                          X
U15M      u mean unit vector wind comp - 15m   3            X                          X            X             X
U24H      daily average u wind component       1            X
USD15M    u wind component std dev - 15m       3            X                          X            X             X
V         v wind component                     3            X                          X            X             X
V1H       hourly average v wind component      2            X                          X
V15M      v mean unit vector wind comp - 15m   3            X                          X            X             X
V24H      daily average v wind component       1            X
VSD15M    v wind component std dev - 15m       3            X                          X            X             X
VIS       visibility                           1            X
PCP5M     accumulated precip - 5m              1            X
PCP15M    accumulated precip - 15m             1            X
PCP1H     accumulated precip - 1h              1            X
PCP3H     accumulated precip - 3h              1            X
PCP6H     accumulated precip - 6h              1            X
PCP12H    accumulated precip - 12h             1            X
PCP18H    accumulated precip - 18h             1            X
PCP24H    accumulated precip - 24h             1            X
PCPLM     accum. precip - since local midnight 1            X
PCPUTCM   accum. precip - since UTC midnight   1            X
PCPCDAY   accum. precip - local calendar day   1            X
PCPUDAY   accum. precip - user-defined day     1            X
PCPRATE   precipitation rate                   1            X
ARCHPCP   1h archived precip accumulation      1            X
SOILMP    soil moisture percent                1            X
SOILM2    soil moisture percent - 2 inch       1            X
SOILM4    soil moisture percent - 4 inch       1            X
SOILM8    soil moisture percent - 8 inch       1            X
SOILM20   soil moisture percent - 20 inch      1            X
SOILM40   soil moisture percent - 40 inch      1            X
SOILT     soil temperature                     2            X                          X
SOILT2    soil temperature - 2 inch            2            X                          X
SOILT4    soil temperature - 4 inch            2            X                          X
SOILT8    soil temperature - 8 inch            2            X                          X
SOILT20   soil temperature - 20 inch           2            X                          X
SOILT40   soil temperature - 40 inch           2            X                          X
DDGUST    wind dir at gust                     1            X
FFGUST    wind gust                            2            X
FF24MAX   daily maximum wind speed             1            X
T24MIN    24 hour minimum temperature          1            X
T24MAX    24 hour maximum temperature          1            X
DDMAX1H   wind dir at hourly max wind speed    1            X
FFMAX1H   hourly maximum wind speed            2            X                          X
SNOWC     snow cover                           1            X
SNOW6H    snow fall - 6h                       1            X
SNOW24H   snow fall - 24h                      1            X
SST       sea surface temperature              2            X            5             X
RDTX      Road temperature - sensor X (1-N)    2            X            10            *

Internal Consistency Checks
---------------------------

  1   sea level pressure vs. station pressure
  2   3h pressure change vs. station pressure
  3   air temperature vs. dewpoint temperature
  5   sea surface temperature vs. air temperature

Claurs only Internal Consistency Checks
---------------------------
  10  Co-located instruments check

Clarus only Temporal Consistency
---------------------------
  * ddddd 

Clarus only Spatial Consistency
---------------------------
  * dddd 


Last updated 15 March 2017