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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)

RYOFU MARU III(JGQH), PX46
Observation period : 2017/7/20 to 2017/7/28

This page shows results for the PX46 line based on monitoring by the RYOFU MARU III and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
20	7020	-0.21	0.75	1.72	-4.82

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	500	-0.61	1.04	1.43	-4.82
50-100	500	-0.34	0.94	0.94	-3.24
100-150	500	-0.23	0.86	0.93	-2.64
150-200	500	-0.36	0.77	0.88	-2.44
200-250	500	-0.55	0.76	0.90	-2.42
250-300	500	-0.63	0.76	1.06	-2.32
300-350	500	-0.53	0.72	1.07	-2.20
350-400	500	-0.35	0.74	1.40	-2.02
400-450	500	-0.13	0.67	1.72	-1.84
450-500	500	0.07	0.56	1.70	-1.10
500-550	200	0.19	0.45	1.53	-0.57
550-600	200	0.19	0.35	1.22	-0.48
600-650	200	0.19	0.33	1.04	-0.43
650-700	200	0.22	0.29	1.04	-0.22
700-750	200	0.21	0.22	0.84	-0.17
750-800	200	0.19	0.17	0.63	-0.14
800-850	200	0.17	0.15	0.47	-0.11
850-900	200	0.14	0.12	0.42	-0.10
900-950	200	0.10	0.09	0.34	-0.11
950-1000	200	0.06	0.07	0.23	-0.11

Results of QC

A total of 20 profiles (457 data, reported by BATHY or TESAC) were received from the RYOFU MARU III.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 457

Position on land test

On land: 0 of 20

Invalid position: 0 of 20

Regional range test

Error data (low): 0 of 457

Error data (high): 0 of 457

Gradient test

Error data: 0 of 457

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

Summary of QC

QC detected no unnatural profiles.
There were differences above 2°C between observation data and the results of assimilation at around 34°N. The observation data shows sharper thermocline better than the assimilation data.

Figures

◊Station map	◊Vertical temperature profile Vertical profile of temperature along the observing line of PX46 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