GTSPP Data Product Centre

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

Data on SOOP lines

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100m TS by NPR-4DVAR

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OceanOPS

Ship Observations Team (SOT)

KEIFU MARU(JPBN), PX45
Observation period : 2024/2/2 to 2024/2/17

This page shows results for the PX45 line based on monitoring by the KEIFU MARU and comparison with the result of assimilation by NPR-4DVAR.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
41	14325	-0.02	0.52	2.55	-4.44

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	1025	0.09	0.29	1.01	-1.65
50-100	1025	-0.17	0.70	1.09	-4.44
100-150	1025	-0.27	0.79	2.48	-2.50
150-200	1025	-0.05	0.75	2.55	-2.48
200-250	1025	0.01	0.53	1.85	-1.55
250-300	1025	0.05	0.47	1.16	-1.11
300-350	1025	-0.01	0.54	1.56	-1.30
350-400	1025	0.00	0.52	1.67	-1.17
400-450	1025	0.03	0.52	1.68	-1.36
450-500	1025	0.02	0.49	1.45	-1.15
500-550	410	-0.02	0.45	1.43	-1.08
550-600	410	-0.05	0.39	0.85	-1.35
600-650	410	-0.08	0.35	0.68	-1.32
650-700	405	-0.05	0.29	0.62	-0.76
700-750	400	-0.02	0.26	0.78	-0.61
750-800	400	0.01	0.24	0.81	-0.51
800-850	400	0.05	0.21	0.82	-0.39
850-900	400	0.07	0.19	0.81	-0.31
900-950	400	0.08	0.18	0.79	-0.25
950-1000	400	0.06	0.17	0.74	-0.27

Results of QC

A total of 41 profiles (850 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 850

Position on land test

On land: 0 of 41

Invalid position: 0 of 41

Regional range test

Error data (low): 0 of 850

Error data (high): 0 of 850

Gradient test

Error data: 0 of 850

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

Summary of QC

QC detected no unnatural profiles.
At the depths between 40 m and 120 m in the seas around 7°N, there were differences above 2°C between observation data and the results of assimilation.

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 NPR-4DVAR	◊Distribution of differences (Obs. - Assim.) by depth

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