GTSPP Data Product CentreGTSPP Data Product Centre
GTSPP Data Product Centre for the North Pacific Region hosted by the Japan Meteorological Agency
SAFMARINE MERU(MNDC9), PX05
Observation period : 2012/5/24 to 2012/6/3
Observation period : 2012/5/24 to 2012/6/3
This page shows results for the PX05 line based on monitoring by the SAFMARINE MERU and comparison with the result of assimilation by MOVE-NP.
Overall statistics
| Number of profiles | Number of levels | AVE | RMSD | MAXD | MIND |
|---|---|---|---|---|---|
| 250 | 50465 | 0.10 | 0.79 | 3.88 | -5.15 |
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 | 3831 | -0.08 | 0.72 | 2.00 | -4.33 |
| 50-100 | 3825 | -0.10 | 0.90 | 2.19 | -5.15 |
| 100-150 | 3825 | 0.04 | 1.19 | 3.41 | -5.12 |
| 150-200 | 3825 | 0.08 | 1.06 | 3.19 | -4.76 |
| 200-250 | 3825 | 0.10 | 0.92 | 2.73 | -4.28 |
| 250-300 | 3825 | 0.06 | 0.81 | 2.49 | -4.16 |
| 300-350 | 3825 | 0.09 | 0.75 | 1.82 | -4.52 |
| 350-400 | 3825 | 0.18 | 0.68 | 2.19 | -3.89 |
| 400-450 | 3825 | 0.22 | 0.64 | 2.54 | -3.65 |
| 450-500 | 1530 | 0.27 | 0.61 | 2.46 | -3.37 |
| 500-550 | 1530 | 0.26 | 0.58 | 2.31 | -2.69 |
| 550-600 | 1530 | 0.23 | 0.54 | 2.19 | -2.40 |
| 600-650 | 1530 | 0.22 | 0.51 | 2.45 | -1.90 |
| 650-700 | 1530 | 0.20 | 0.48 | 2.80 | -1.55 |
| 700-750 | 1530 | 0.18 | 0.49 | 3.26 | -1.06 |
| 750-800 | 1530 | 0.19 | 0.52 | 3.62 | -0.88 |
| 800-850 | 1237 | 0.20 | 0.59 | 3.86 | -0.70 |
| 850-900 | 210 | 0.37 | 0.82 | 3.88 | -0.27 |
| 900-950 | 10 | 3.09 | 0.04 | 3.16 | 3.03 |
| 950-1000 | 1 | 3.18 | 0.00 | 3.18 | 3.18 |
Results of QC
A total of 250(111939 levels, reported by BATHY or TESAC) were received from the SAFMARINE MERU.
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: 1525 of 111939
On land: 0 of 250
Invalid position: 0 of 250
Error data (low): 0 of 111939
Error data (high): 581 of 111939
Error data: 491 of 111939
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. These are checked by the grounded test, the regional range test and the gradient test. The main cause will be "hitting bottom" of XBT.
- Among the data that passed JMA's automated quality control procedures, some "hitting bottom" data are found in the seas around Izu rigde.(Refer to concerned figures) The topography used our grounded test is too rough to catch the error.
- Temperatures calculated by JMA’s assimilation model are higher than those of observation in area of the Kuroshio front (around 32°N), because the axis of the Kuroshio is analyzed father north than its actual location.
- With the exception of the above errors and differences, there was no significant bias in comparison with the results of assimilation by JMA.
Figures
| ◊Station map | ◊Vertical temperature profile Vertical profile of temperature along the observing line of PX05 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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