ALEX HALEY(NZPO), PX38
Observation period : 2016/3/12 to 2016/3/20

This page shows results for the PX38 line based on monitoring by the ALEX HALEY and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profilesNumber of dataAVERMSDMAXDMIND
10829128-0.120.755.33-6.01

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
0-502314-0.080.591.34-6.01
50-1002300-0.240.591.76-2.65
100-1502294-0.261.103.99-4.11
150-2002271-0.191.415.33-4.68
200-2502250-0.151.184.90-3.96
250-3002244-0.180.843.65-2.66
300-3502225-0.200.572.00-1.77
350-4002225-0.110.553.56-1.63
400-4502225-0.070.482.08-1.29
450-5002225-0.040.452.15-0.99
500-550882-0.050.391.66-0.94
550-600861-0.060.301.48-0.78
600-650848-0.050.251.25-0.61
650-700840-0.030.190.97-0.55
700-750835-0.000.160.60-0.45
750-8008260.010.130.44-0.29
800-8507990.020.110.46-0.23
850-9006040.030.120.42-0.27
900-950600.080.120.46-0.11
950-10000----


Results of QC

A total of 108 profiles (79988 data, reported by BATHY or TESAC) were received from the ALEX HALEY.
The results of JMA quality control are as follows.
  • Grounded test

    • Error data: 35 of 79988

  • Position on land test

    • On land: 0 of 108

    Invalid position: 0 of 108

  • Regional range test

    • Error data (low): 0 of 79988

    Error data (high): 0 of 79988

  • Gradient test

    • Error data: 30 of 79988

For details 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. These are checked by the grounded test and the gradient test.
  • There are large differences at depths of between 100 and 300m in the seas south of 30°N. The observation data shows sharper thermocline better than the assimilation 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 PX38 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)