CAPE FRANKLIN(V7LH7), PX40
Observation period : 2017/9/1 to 2017/9/12

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

Overall statistics

Number of profilesNumber of dataAVERMSDMAXDMIND
18861523-0.241.2614.71-8.75

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
0-504695-0.200.993.75-8.75
50-1004675-0.481.333.68-8.12
100-1504675-0.600.922.31-5.43
150-2004675-0.600.815.79-3.84
200-2504675-0.431.049.41-3.97
250-3004675-0.331.209.30-3.36
300-3504667-0.261.3310.16-3.19
350-4004650-0.211.4311.61-2.66
400-4504650-0.161.4912.69-2.60
450-5004650-0.071.5413.61-2.40
500-5501860-0.031.5714.11-1.66
550-6001860-0.001.5914.66-1.64
600-6501844-0.101.1014.71-1.61
650-7001840-0.070.998.13-1.27
700-75018400.001.058.49-1.08
750-80018400.071.058.48-1.22
800-85018340.151.068.18-1.06
850-90016610.221.168.30-0.56
900-9502451.252.658.48-0.31
950-1000124.813.318.52-0.23


Results of QC

A total of 188 profiles (83584 data, reported by BATHY or TESAC) were received from the CAPE FRANKLIN.
The results of JMA quality control are as follows.
  • Grounded test

    • Error data: 0 of 83584

  • Position on land test

    • On land: 0 of 188

    Invalid position: 0 of 188

  • Regional range test

    • Error data (low): 0 of 83584

    Error data (high): 186 of 83584

  • Gradient test

    • Error data: 114 of 83584

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


Summary of QC

  • QC detected some unnatural profiles shown in 'Results of QC'.
  • Among the data that passed JMA's automated quality control procedures, some "hitting bottom" data are found in the seas around Hawaiian Islands(Refer to concerned figures) and the seas around Izu ridge (Refer to concerned figures). The topography used our grounded test is too rough to catch the error.
  • There were large differences between observation data and the results of assimilation in areas south of the Kuroshio extension (west of 150°E) due to cold and warm eddies.
  • Some observations at around 170°W are considered to be erroneous data.
  • With the exception of the above errors and differences, there were no significant biases in comparison with the results of assimilation by JMA.


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)