KEIFU MARU(JPBN), PX45
Observation period : 2018/7/23 to 2018/8/5

This page shows results for the PX45 line based on monitoring by the KEIFU MARU and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profilesNumber of dataAVERMSDMAXDMIND
3411825-0.330.772.22-4.39

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
0-50850-0.090.751.94-3.20
50-100850-0.281.102.22-3.79
100-150850-0.811.091.46-4.39
150-200850-0.850.900.38-3.87
200-250850-0.620.800.94-2.55
250-300850-0.420.811.08-2.63
300-350850-0.320.721.09-2.48
350-400850-0.230.711.40-2.70
400-450850-0.220.661.41-2.01
450-500842-0.230.611.08-1.91
500-550330-0.250.540.81-1.55
550-600330-0.220.510.99-1.52
600-650330-0.220.481.02-1.20
650-700330-0.200.420.48-1.30
700-750330-0.130.340.43-1.21
750-800330-0.080.310.48-1.04
800-850330-0.030.280.54-0.85
850-900330-0.020.250.51-0.70
900-950330-0.020.220.39-0.60
950-1000330-0.040.180.31-0.50


Results of QC

A total of 34 profiles (755 data, reported by BATHY or TESAC) were received from the KEIFU MARU.
The results of JMA quality control are as follows.
  • Grounded test
  • Error data: 0 of 755

  • Position on land test
  • On land: 0 of 34

    Invalid position: 0 of 34

  • Regional range test
  • Error data (low): 0 of 755

    Error data (high): 0 of 755

  • Gradient test
  • Error data: 0 of 755

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


Summary of QC

  • QC detected no unnatural profiles.
  • There were large differences between observation data and the results of assimilation in areas near the Kuroshio front (around 32°N).
  • There were differences above 2°C between observation data and the results of assimilation at a depth of between 100 and 200 m in the seas around 9°N and around 21°N.


Figures

◊Station map ◊Vertical temperature profile

Vertical profile of temperature along the observing line of PX45 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)