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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)

HORIZON ENTERPRISE(KRGB), PX37
Observation period : 2016/7/22 to 2016/7/29

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
94	30055	-0.09	1.12	4.37	-19.87

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	2350	-0.26	2.33	4.37	-19.87
50-100	2350	-0.38	1.53	1.50	-11.33
100-150	2350	-0.20	1.33	1.60	-8.95
150-200	2350	-0.27	1.36	3.95	-8.15
200-250	2350	-0.35	1.29	3.07	-7.68
250-300	2334	-0.22	1.00	1.57	-7.30
300-350	2300	-0.02	0.41	1.20	-1.15
350-400	2300	0.02	0.35	1.39	-1.11
400-450	2297	0.03	0.37	1.76	-1.11
450-500	2275	0.03	0.38	2.07	-1.03
500-550	910	0.06	0.38	2.34	-0.77
550-600	910	0.10	0.44	2.62	-0.50
600-650	910	0.13	0.48	2.88	-0.43
650-700	906	0.18	0.54	3.10	-0.46
700-750	900	0.19	0.58	3.28	-0.39
750-800	850	0.19	0.60	3.53	-0.34
800-850	850	0.19	0.64	3.79	-0.31
850-900	531	0.30	0.82	4.06	-0.29
900-950	28	2.49	1.00	4.14	0.24
950-1000	4	2.62	0.44	3.07	2.18

Results of QC

A total of 94 profiles (41473 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: 674 of 41473

Position on land test

On land: 0 of 94

Invalid position: 0 of 94

Regional range test

Error data (low): 1 of 41473

Error data (high): 76 of 41473

Gradient test

Error data: 163 of 41473

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

Summary of QC

Some erroneous profiles are detected by JMA's automated quality control procedures. These are checked by the grounded test, regional range test and the gradient test.
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) and adjacent Hawaii Islands(Refer to concerned figures). The topography used our grounded test is too rough to catch the error.
With the exception of the above errors and differences, there were 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