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Table 10 displays a summary of the views when the options “surface” and “availability” are selected on WDQMS web tool (for NWP monitoring and Monitoring category, respectively).  The maps display the availability performance for each station highlighting differences in reporting performances as well as issues related to the station metadata recorded in OSCAR/Surface. Regarding the reporting performances we have the following categories: not reporting during the period (black); reporting below expected (orange and red); and fully reporting (green). The metadata issues flagged are the following: station ID not known to OSCAR/Surface (yellow); station with observations not expected during the period according to the schedule recorded in OSCAR/Surface (grey); station reporting more than expected (pink). Clicking on a dot on the map opens up a screen with detailed information about the station data availability including the access to a chart containing the availability statistics over time (30 days), namely time series with the total number of received observations during the selected interval/variable as well as the number of expected observations according to OSCAR/Surface or the GBON draft provisions (options in the “Baseline” menu) . A link to the station metadata in OSCAR/Surface is provided for all stations except for the ones displayed as yellow dots as their IDs (referred as NWP-ID) are not recognised in OSCAR/Surface.  


Table 10 - This table summarises the content of WDQMS web tool views when monitoring the availability of land surface observations is intended (i.e., NWP monitoring: land-surface observations ; Monitoring category: availability). 

Period

Variable

Monitoring Centre

Maps

Time Series (30 days)

        Individual station 

6 hourly

(00, 06, 12,18 UTC)

  • surface pressure
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

ECMWF

NCEP

JMA 

DWD

Availability performance index:

OSCAR/Surface or GBON

  • Number of observations received from selected Centre
  • Number of observations expected according to OSCAR/Surface

      (Link to OSCAR/Surface)

  • surface pressure
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

All 

Best availability performance index:

OSCAR/Surface or GBON

  • Number of received observations from all Centres
  • Number of expected observations expected according to OSCAR/Surface

      (Link to OSCAR/Surface)

Daily

surface pressure

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF 

NCEP

JMA 

DWD

Availability performance index:

OSCAR/Surface or GBON

  • Number of observations received from selected Centre
  • Number of observations expected according to OSCAR/Surface

      (Link to OSCAR/Surface)

  • surface pressure
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

All 

Best availability performance index:

OSCAR/Surface or GBON

  • Number of received observations from all Centres
  • Number of expected observations expected according to OSCAR/Surface

      (Link to OSCAR/Surface)


The options available on WDQMS web tool control menu when we select to monitor the “quality” (as Monitoring category) of “surface” (as NWP monitoring) are summarised in Table 11. By selecting the date, time, monitoring centre and variable, a map will show how the observing network complies with the NWP requirements set for the selected variable. The map shows the stations whose observations are considered useful for NWP purposes (greenish dots), as well as highlights the major anomalies regarding stations with observations that deviate from the model forecasts quite significantly (orange and red dots) and exceed the limits set  for “Threshold” (Table 7).  Clicking on a dot on the map opens a screen with detailed information about the station data quality over time (30 days), namely time series with the O-B calculated for the selected interval/variable. It is worth noting that the 6-hourly intervals for a particular monitoring centre will allow to see the details of individual observations that contribute for the average value displayed on the map. This means that it is possible to check the O-B value, the usage (Status, i.e., used or not used because it was rejected by/before the assimilation) and the type of report (Type, i.e., TAC or BUFR) of a particular observation (identified by date and time) by hovering the mouse over each dot in the time series. The “Alert” is an option in the temporal aggregation based on 5-day moving averages across the WIGOS Monitoring Centres designed to warn WMO RWCs about potential quality issues. This measure takes into account the persistence of an existing daily problem.


Table 11 - This table summarises the content of WDQMS web tool views when the options to monitor the quality of  surface-land observations are selected (i.e., NWP monitoring: surface; Monitoring category: quality).

Period

Variable

Monitoring Centre

Map

Time Series (30 days)

        Individual station 

6 hourly

(00, 06, 12,18 UTC)

  • surface pressure
  • geopotential
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

ECMWF 

NCEP

JMA 

DWD

Absolute value of O-B 6-hourly mean

  • O-B of individual observation (dot), Status Flag and Observation Type from selected Centre 
  • O-B 6-hourly mean (line) from selected Centre


  • surface pressure
  • geopotential
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

All 

Absolute value of best O-B 6-hourly mean

  • O-B 6-hourly mean (line), Status Flag and Observation Type from all Centres


Daily

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF

NCEP

JMA 

DWD

Absolute value of O-B daily mean

  • O-B daily mean (line) from selected Centre


  • surface pressure
  • 2m temperature
  • 2m humidity
  • 10m zonal wind
  • 10m meridional wind

All 

Best absolute value of O-B daily mean

  • O-B daily mean (line) from all Centres


Alert

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

  • 10m meridional wind

ECMWF 

NCEP

JMA 

DWD

5-day moving average of absolute value of daily O-B means

  • O-B daily mean (dot) from selected Centre
  • O-B 5-day moving mean (line) and number of daily values used from selected Centre


surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

  • 10m meridional wind

All 

Best 5-day moving average of absolute value of daily O-B means.

  • O-B 5-day moving mean (line) and number of daily values used from all Centres


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