GTSPP Data Product CentreGTSPP Data Product Centre
GTSPP Data Product Centre for the North Pacific Region hosted by the Japan Meteorological Agency
Cg Sycamore(NTGG), PX38
Observation period : 2012/6/10 to 2012/6/17
Observation period : 2012/6/10 to 2012/6/17
This page shows results for the PX38 line based on monitoring by the Cg Sycamore and comparison with the result of assimilation by MOVE-NP.
Overall statistics
| Number of profiles | Number of levels | AVE | RMSD | MAXD | MIND |
|---|---|---|---|---|---|
| 113 | 35516 | 0.03 | 1.22 | 5.97 | -20.79 |
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 | 2775 | -0.10 | 1.64 | 1.65 | -16.89 |
| 50-100 | 2771 | -0.16 | 1.51 | 3.44 | -15.26 |
| 100-150 | 2750 | 0.25 | 1.52 | 5.94 | -12.97 |
| 150-200 | 2700 | 0.33 | 1.60 | 5.97 | -10.88 |
| 200-250 | 2700 | 0.20 | 1.34 | 5.71 | -10.01 |
| 250-300 | 2700 | 0.06 | 1.03 | 3.90 | -9.29 |
| 300-350 | 2700 | 0.00 | 0.87 | 1.71 | -8.49 |
| 350-400 | 2700 | 0.00 | 0.79 | 1.58 | -7.63 |
| 400-450 | 2700 | 0.02 | 0.71 | 3.30 | -6.67 |
| 450-500 | 1080 | 0.04 | 0.68 | 3.83 | -5.73 |
| 500-550 | 1080 | 0.05 | 0.60 | 3.60 | -4.88 |
| 550-600 | 1080 | 0.06 | 0.54 | 3.63 | -4.14 |
| 600-650 | 1077 | 0.07 | 0.48 | 3.93 | -3.62 |
| 650-700 | 1070 | 0.05 | 0.34 | 1.90 | -3.20 |
| 700-750 | 1045 | 0.05 | 0.38 | 4.01 | -2.88 |
| 750-800 | 1035 | 0.04 | 0.28 | 1.03 | -2.66 |
| 800-850 | 737 | 0.03 | 0.31 | 0.73 | -2.48 |
| 850-900 | 22 | -0.92 | 1.24 | 0.63 | -2.33 |
| 900-950 | 5 | -2.19 | 0.01 | -2.17 | -2.21 |
| 950-1000 | 0 | - | - | - | - |
Results of QC
A total of 113(2062 levels, reported by BATHY or TESAC) were received from the Cg Sycamore.
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: 4 of 2062
On land: 0 of 113
Invalid position: 0 of 113
Error data (low): 0 of 2062
Error data (high): 388 of 2062
Error data: 107 of 2062
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 "exceeding the guaranteed depth of observation" of XBT.
- One of the observations at around 32°N, 155°W is considered to be erroneous data.
- There were differences above 3°C between observation data and the results of assimilation at around 22°N and 28°N at a depth of around 200 m.
- 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 PX38 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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