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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)

HORIZON ENTERPRISE(KRGB), PX37
Observation period : 2017/11/25 to 2017/11/30

This page shows results for the PX37 line based on monitoring by the HORIZON ENTERPRISE and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
84	26970	-0.13	0.61	4.35	-3.39

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	2100	-0.12	0.50	1.22	-2.67
50-100	2100	-0.54	0.90	1.48	-3.39
100-150	2100	-0.37	0.80	2.25	-2.77
150-200	2100	-0.20	0.79	1.68	-3.11
200-250	2100	-0.19	0.67	1.44	-2.87
250-300	2100	-0.10	0.54	1.76	-2.01
300-350	2100	-0.05	0.48	1.74	-1.39
350-400	2100	-0.04	0.47	2.21	-1.27
400-450	2080	-0.07	0.43	2.61	-0.96
450-500	2068	-0.06	0.43	2.98	-0.86
500-550	820	-0.04	0.43	3.10	-0.75
550-600	816	-0.01	0.45	3.30	-0.69
600-650	810	0.03	0.44	3.45	-0.56
650-700	807	0.05	0.43	3.48	-0.48
700-750	800	0.05	0.43	3.73	-0.32
750-800	783	0.05	0.44	3.88	-0.32
800-850	736	0.07	0.48	4.13	-0.36
850-900	445	0.10	0.59	4.35	-0.32
900-950	5	0.40	0.22	0.71	0.09
950-1000	0	-	-	-	-

Results of QC

A total of 84 profiles (40035 data, reported by BATHY or TESAC) were received from the HORIZON ENTERPRISE.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 40035

Position on land test

On land: 0 of 84

Invalid position: 0 of 84

Regional range test

Error data (low): 0 of 40035

Error data (high): 0 of 40035

Gradient test

Error data: 0 of 40035

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

Summary of QC

QC detected no unnatural profiles.
Among the data that passed JMA's automated quality control procedures, some "hitting bottom" data are found in the seas near the west coast of the United States(Refer to concerned figures). The topography used our grounded test is too rough to catch the error.
There are differences above 2°C between observation data and the results of assimilation at depths of between 20 and 250m. The observation data shows sharper thermocline better than the assimilation data.
Some observations at around 125°W are considered to be erroneous data.
With the exception of the above errors and differences, there are no significant biases in comparison with the results of assimilation by JMA.

Figures

◊Station map	◊Vertical temperature profile Vertical profile of temperature along the observing line of PX37 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