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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)

NORTHEWEST SANDERLING(VNVZ), PX11
Observation period : 2017/1/29 to 2017/2/1

This page shows results for the PX11 line based on monitoring by the NORTHEWEST SANDERLING and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
18	5509	-0.04	0.78	2.38	-3.99

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	450	0.06	0.24	0.90	-0.65
50-100	450	-0.43	0.93	1.14	-3.14
100-150	450	-0.97	1.27	1.27	-3.99
150-200	450	-0.59	0.97	2.18	-2.99
200-250	450	-0.01	0.73	2.38	-1.75
250-300	450	0.29	0.67	1.49	-1.22
300-350	450	0.32	0.59	1.73	-0.99
350-400	450	0.13	0.47	1.01	-0.95
400-450	424	0.14	0.38	0.92	-0.66
450-500	400	0.16	0.35	1.02	-0.43
500-550	159	0.13	0.39	0.84	-0.57
550-600	150	0.15	0.39	0.92	-0.74
600-650	150	0.15	0.35	0.77	-0.88
650-700	145	0.12	0.34	0.71	-0.84
700-750	132	0.17	0.34	0.63	-0.75
750-800	130	0.21	0.39	0.73	-0.83
800-850	130	0.23	0.38	0.79	-0.79
850-900	87	0.28	0.35	0.83	-0.65
900-950	2	-0.03	0.01	-0.02	-0.04
950-1000	0	-	-	-	-

Results of QC

A total of 18 profiles (612 data, reported by BATHY or TESAC) were received from the NORTHEWEST SANDERLING.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 612

Position on land test

On land: 0 of 18

Invalid position: 0 of 18

Regional range test

Error data (low): 0 of 612

Error data (high): 0 of 612

Gradient test

Error data: 0 of 612

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

Summary of QC

No errors were detected with JMA's quality control procedures.
There were differences above 2°C between the results of assimilation and a profile data observed at depths of between 50 and 200m in the seas south from 14°N. It's to be noted that the results of assimilation is considered to be less accurate in the marginal seas.
There was no significant bias in comparison with the results of assimilation by JMA.

Figures

◊Station map	◊Vertical temperature profile Vertical profile of temperature along the observing line of PX11 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