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

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The last 30 days SOOP observation

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Ship Observations Team (SOT)

KEIFU MARU(JPBN), PX45
Observation period : 2021/8/21 to 2021/8/29

This page shows results for the PX45 line based on monitoring by the KEIFU MARU and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
17	5967	0.35	0.79	2.61	-2.23

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	-0.02	0.49	1.44	-2.23
50-100	425	0.13	0.85	1.95	-2.18
100-150	425	-0.07	0.69	1.53	-1.50
150-200	425	0.21	0.66	2.07	-1.25
200-250	425	0.45	0.75	2.54	-0.69
250-300	425	0.53	0.84	2.56	-0.22
300-350	425	0.50	0.95	2.57	-0.46
350-400	425	0.57	1.03	2.59	-0.75
400-450	425	0.63	1.04	2.55	-0.76
450-500	425	0.67	0.99	2.61	-0.42
500-550	170	0.57	0.84	2.51	-0.50
550-600	170	0.46	0.67	2.20	-0.42
600-650	170	0.33	0.55	1.64	-0.36
650-700	170	0.33	0.45	1.29	-0.32
700-750	170	0.32	0.33	1.04	-0.28
750-800	170	0.30	0.28	0.81	-0.15
800-850	170	0.25	0.26	0.73	-0.22
850-900	170	0.24	0.26	0.72	-0.28
900-950	170	0.26	0.25	0.74	-0.21
950-1000	170	0.25	0.25	0.76	-0.18

Results of QC

A total of 17 profiles (382 data, reported by BATHY or TESAC) were received from the KEIFU MARU.
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 between observation data and the results of assimilation in areas near the Kuroshio front (around 30°N).
There were differences above 2°C at a depth of around 300m in the seas around 33°N. The observation data showed duller thermocline than the assimilation data.

Figures

◊Station map	◊Vertical temperature profile Vertical profile of temperature along the observing line of PX45 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