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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 : 2019/5/23 to 2019/5/30

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
17	5967	0.16	0.54	2.70	-1.64

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	425	0.03	0.61	2.03	-1.32
50-100	425	0.06	0.57	2.43	-1.32
100-150	425	0.19	0.76	2.70	-1.48
150-200	425	0.03	0.64	1.76	-1.64
200-250	425	0.06	0.63	1.55	-1.22
250-300	425	0.04	0.58	1.21	-1.29
300-350	425	0.08	0.60	1.25	-1.55
350-400	425	0.20	0.51	1.38	-1.16
400-450	425	0.30	0.52	1.64	-0.86
450-500	425	0.39	0.57	1.76	-0.82
500-550	170	0.36	0.51	1.62	-0.50
550-600	170	0.30	0.42	1.31	-0.37
600-650	170	0.26	0.36	1.22	-0.30
650-700	170	0.24	0.28	1.04	-0.13
700-750	170	0.21	0.23	0.79	-0.07
750-800	170	0.21	0.22	0.79	-0.06
800-850	170	0.19	0.20	0.82	-0.04
850-900	170	0.16	0.16	0.73	-0.06
900-950	170	0.13	0.13	0.59	-0.06
950-1000	170	0.10	0.09	0.39	-0.05

Results of QC

A total of 17 profiles (382 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 382

Position on land test

On land: 0 of 17

Invalid position: 0 of 17

Regional range test

Error data (low): 0 of 382

Error data (high): 0 of 382

Gradient test

Error data: 0 of 382

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

Summary of QC

QC detected no unnatural profiles.
There were large differences at depths of between 100 and 150 m in the seas around 42°N. The observation data showed sharper thermocline 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