NORTHWEST SANDERLING(VNVZ), PX11
Observation period : 2023/2/19 to 2023/2/24

This page shows results for the PX11 line based on monitoring by the NORTHWEST SANDERLING and comparison with the result of assimilation by NPR-4DVAR.

Overall statistics

Number of profilesNumber of dataAVERMSDMAXDMIND
13429-0.260.912.33-2.49

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
0-50110-0.120.330.70-0.63
50-100700.580.911.80-2.23
100-15050-0.430.741.12-1.99
150-20035-0.261.362.33-1.98
200-25025-1.920.47-0.92-2.49
250-30025-1.610.45-0.65-2.11
300-35025-0.160.340.34-0.57
350-40025-0.140.420.34-0.63
400-45025-0.380.07-0.28-0.53
450-50025-0.180.160.06-0.42
500-550100.170.050.240.07
550-60040.230.030.280.21
600-6500----
650-7000----
700-7500----
750-8000----
800-8500----
850-9000----
900-9500----
950-10000----


Results of QC

A total of 13 profiles (373 data, reported by BATHY or TESAC) were received from the NORTHWEST SANDERLING.
The results of JMA quality control are as follows.
  • Grounded test

    • Error data: 0 of 373

  • Position on land test

    • On land: 0 of 13

    Invalid position: 0 of 13

  • Regional range test

    • Error data (low): 0 of 373

    Error data (high): 0 of 373

  • Gradient test

    • Error data: 0 of 373

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


Summary of QC

  • QC detected no unnatural profiles.
  • At depths of between 200 m and 300 m in the seas around 3°N, there were differences above 2°C between observation data and the results of assimilation.


Figures

◊Station map ◊Vertical temperature profile

Vertical profile of temperature along the observing line of PX11 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 NPR-4DVAR ◊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)