MIYAGI-MARU(JCHQ), PX40
Observation period : 2013/6/7 to 2013/6/18

This page shows results for the PX40 line based on monitoring by the MIYAGI-MARU and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profilesNumber of dataAVERMSDMAXDMIND
11535226-0.070.674.55-3.73

Abbreviations in the table indicate:
AVE: average difference (observation value minus assimilation value)
RMSD: root mean square of difference
MAXD: maximum difference
MIND: minimum difference



Statistics for each depth range

Depth rangeNumber of dataAVERMSDMAXDMIND
0-5028500.110.904.55-2.99
50-1002850-0.120.904.39-3.08
100-1502850-0.180.802.92-2.92
150-2002850-0.170.782.38-3.09
200-2502850-0.100.661.70-2.55
250-3002850-0.060.591.55-2.15
300-3502850-0.060.561.33-2.50
350-4002850-0.040.551.33-2.93
400-4502850-0.020.541.43-2.90
450-5001140-0.050.531.42-3.54
500-5501140-0.080.501.22-3.73
550-6001140-0.090.411.01-2.62
600-6501140-0.080.350.92-2.21
650-7001140-0.050.280.61-1.68
700-7501026-0.000.210.62-1.45
750-8000----
800-8500----
850-9000----
900-9500----
950-10000----


Results of QC

A total of 115 profiles (90045 data, reported by BATHY or TESAC) were received from the MIYAGI-MARU.
The results of JMA quality control are as follows.
  • Grounded test

    • Error data: 0 of 90045

  • Position on land test

    • On land: 0 of 115

    Invalid position: 0 of 115

  • Regional range test

    • Error data (low): 0 of 90045

    Error data (high): 0 of 90045

  • Gradient test

    • Error data: 2 of 90045

For datails of JMA's quality control procedures, please refer to this page.


Summary of QC

  • Some erroneous profiles are detected by JMA's automated quality control procedures and these are checked by the gradient test.
  • There was no significant bias in comparison with the results of assimilation by JMA.
  • There were large differences between observation data and the results of assimilation in areas south of the Kuroshio extension (east of 150°E) due to cold and warm eddies.


Figures

◊Station map ◊Vertical temperature profile

Vertical profile of temperature along the observing line of PX40 moved the entire profile by 5 degree Celsius.
station map water fall
◊Vertical observation sections ◊Summary of differences (Obs. - Assim.) by depth

Dots and error bars represent the averages and root mean squares of the differences, respectively. Crosses represent the maximum/minimum differences.
observation scatter plot (summary of all station)
◊Vertical sections for the result of assimilation by MOVE-NP ◊Distribution of differences (Obs. - Assim.) by depth
result of assimilation scatter plot(depth bases)
◊Vertical sections of differences (Obs. - Assim.) ◊Distribution of differences (Obs. - Assim.) by temperature
differences (Obs. - Assim.) scatter plot (tempereture basis)