GTSPP Data Product CentreGTSPP Data Product Centre
GTSPP Data Product Centre for the North Pacific Region hosted by the Japan Meteorological Agency
MIYAGI-MARU(JCHQ), PX40
Observation period : 2012/6/8 to 2012/6/19
Observation period : 2012/6/8 to 2012/6/19
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 profiles | Number of levels | AVE | RMSD | MAXD | MIND |
|---|---|---|---|---|---|
| 121 | 37059 | 0.03 | 0.82 | 4.77 | -4.52 |
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 range | Number of levels | AVE | RMSD | MAXD | MIND |
|---|---|---|---|---|---|
| 0-50 | 3000 | 0.03 | 0.88 | 4.06 | -4.46 |
| 50-100 | 3000 | -0.10 | 0.85 | 2.31 | -4.52 |
| 100-150 | 3000 | -0.02 | 0.85 | 2.32 | -4.27 |
| 150-200 | 3000 | 0.03 | 0.87 | 2.55 | -3.50 |
| 200-250 | 3000 | 0.04 | 0.86 | 2.87 | -3.35 |
| 250-300 | 3000 | 0.06 | 0.84 | 2.97 | -3.17 |
| 300-350 | 3000 | 0.06 | 0.87 | 2.98 | -3.56 |
| 350-400 | 3000 | 0.06 | 0.85 | 2.28 | -3.48 |
| 400-450 | 3000 | 0.09 | 0.86 | 2.42 | -4.03 |
| 450-500 | 1200 | 0.14 | 0.80 | 3.12 | -4.01 |
| 500-550 | 1200 | 0.11 | 0.81 | 3.64 | -2.83 |
| 550-600 | 1200 | 0.10 | 0.70 | 3.69 | -2.36 |
| 600-650 | 1198 | 0.10 | 0.55 | 3.46 | -1.73 |
| 650-700 | 1190 | 0.06 | 0.38 | 2.28 | -0.97 |
| 700-750 | 1071 | 0.04 | 0.31 | 2.05 | -0.70 |
| 750-800 | 0 | - | - | - | - |
| 800-850 | 0 | - | - | - | - |
| 850-900 | 0 | - | - | - | - |
| 900-950 | 0 | - | - | - | - |
| 950-1000 | 0 | - | - | - | - |
Results of QC
A total of 121(94488 levels, reported by BATHY or TESAC) were received from the MIYAGI-MARU.
The results of JMA quality control are as follows.
The results of JMA quality control are as follows.
- Grounded test
- Position on land test
- Regional range test
- Gradient test
Error data: 0 of 94488
On land: 0 of 121
Invalid position: 0 of 121
Error data (low): 0 of 94488
Error data (high): 0 of 94488
Error data: 6 of 94488
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 155°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. |
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| ◊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. |
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| ◊Vertical sections for the result of assimilation by MOVE-NP | ◊Distribution of differences (Obs. - Assim.) by depth |
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| ◊Vertical sections of differences (Obs. - Assim.) | ◊Distribution of differences (Obs. - Assim.) by temperature |
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