Quality Assurance Practices

This page outlines known instrument problems and the quality assurance practices adopted by Truganina Weather to ensure our data are of the highest quality possible.

Measured Elements

Mean Sea Level Pressure (MSLP)

The automatic MSLP data are routinely compared to the MSLP data from the nearby ABOM AWS at Laverton (control data). This ongoing comparison enables adjustments to be applied to the station level (absolute) pressure to convert to mean sea level (relative) pressure. Adjustments are also applied as necessary to the pressure as read on the manual barometer.

Automatic barometer MSLP correction
Date Correction (hPa)
1/7/2017 4.9
1/6/2017 5.1
1/4/2017 5.4

Temperature

The automatic temperature data are routinely compared to the manual temperature data (control data). This ongoing comparison enables adjustments to be applied to the raw automatic temperature data in WUHU as necessary. A history of the corrections is recorded in the following table.

Temperature tweaks applied in WUHU
Date Correction (° C) Time-based Correction
1/4/2017 0.0 N/A

Our electronic temperature data, which are used in our daily reporting plus our monthly and long-term statistics, are routinely compared to the temperature data from a nearby ABOM AWS for local consistency (see Performance Monitoring below).

Rainfall

The automatic rainfall data are routinely compared to the manual rain gauge data (control data). This ongoing comparison enables adjustments to be applied to the raw automatic rainfall data in WUHU as necessary. A history of the coefficients is recorded in the following table.

Rainfall tweaks applied in WUHU
Date Coefficient
1/4/2017 1.15

Our manual rainfall data, which are used in our daily reporting plus our monthly and long-term statistics, are routinely compared to the rainfall data from nearby rain gauges in the ABOM rainfall network for local consistency (see Performance Monitoring below).

Known Instrument Problems

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Performance Monitoring

Daily monitoring of the primary elements (rainfall, maximum temperature and minimum temperature) is achieved by comparing the data from Truganina Weather against the ABOM AWS at Laverton (ABOM ID = 087031 in the table below). Our daily rainfall is also compared to the Melbourne Water rainfall and river level station on Skeleton Creek at Hoppers Crossing (ABOM ID = 587049 in the table below).

column header
performance monitoring report

087031 = ABOM AWS at Laverton, 587049 = Melbourne Water rain gauge at Hoppers Crossing.

This table is normally updated each day after the evening manual observation


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