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GTSPP Data Product Centre for the North Pacific Region hosted by the Japan Meteorological Agency

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Ship Observations Team (SOT)

MIYAGI-MARU(JCHQ), PX40
Observation period : 2014/6/6 to 2014/6/17

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 data	AVE	RMSD	MAXD	MIND
111	31652	0.02	1.04	4.44	-6.08

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 data	AVE	RMSD	MAXD	MIND
0-50	2759	0.11	1.02	4.44	-3.73
50-100	2672	0.12	1.11	4.04	-3.99
100-150	2613	-0.10	1.23	4.20	-4.52
150-200	2575	-0.04	1.29	3.47	-5.44
200-250	2575	0.03	1.15	3.37	-5.72
250-300	2575	0.01	1.11	3.31	-5.76
300-350	2538	0.04	1.18	2.87	-5.94
350-400	2525	-0.01	1.06	2.79	-6.08
400-450	2512	0.03	0.99	2.75	-5.64
450-500	2480	0.00	0.58	2.53	-5.96
500-550	990	0.02	0.79	1.68	-5.38
550-600	990	0.02	0.67	1.62	-3.95
600-650	990	-0.00	0.52	1.54	-3.59
650-700	990	-0.01	0.43	1.21	-2.59
700-750	990	-0.04	0.32	1.06	-2.33
750-800	878	-0.05	0.00	0.59	-1.85
800-850	0	-	-	-	-
850-900	0	-	-	-	-
900-950	0	-	-	-	-
950-1000	0	-	-	-	-

Results of QC

A total of 111 profiles (79500 data, reported by BATHY or TESAC) were received from the MIYAGI-MARU.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 79500

Position on land test

On land: 0 of 111

Invalid position: 0 of 111

Regional range test

Error data (low): 0 of 79500

Error data (high): 0 of 79500

Gradient test

Error data: 5 of 79500

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 gradient test.
There were large differences between observation data and the results of assimilation in areas south of the Kuroshio extension (east of 150°E) due to cold and warm eddies.
With the exception of the above errors, 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 PX40 moved the entire profile by 5 degree Celsius.

◊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.

◊Vertical sections for the result of assimilation by MOVE-NP	◊Distribution of differences (Obs. - Assim.) by depth

◊Vertical sections of differences (Obs. - Assim.)	◊Distribution of differences (Obs. - Assim.) by temperature