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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 : 2021/6/2 to 2021/6/12

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
22	8154	0.25	0.93	8.40	-3.28

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	675	-0.01	0.54	3.55	-2.07
50-100	675	0.36	1.57	8.40	-2.38
100-150	675	0.49	1.71	7.50	-3.28
150-200	675	0.33	1.38	4.39	-2.57
200-250	659	0.43	1.01	2.83	-1.36
250-300	650	0.53	0.69	2.17	-1.01
300-350	650	0.50	0.65	1.84	-1.03
350-400	650	0.22	0.50	1.76	-0.93
400-450	629	0.06	0.37	1.10	-0.75
450-500	625	0.01	0.33	0.98	-0.79
500-550	250	0.04	0.33	1.35	-0.62
550-600	240	0.08	0.24	0.56	-0.44
600-650	233	0.13	0.27	0.63	-0.54
650-700	221	0.12	0.26	0.69	-0.54
700-750	200	0.11	0.27	0.65	-0.57
750-800	200	0.07	0.26	0.69	-0.53
800-850	164	0.09	0.25	0.72	-0.48
850-900	83	0.08	0.21	0.58	-0.43
900-950	0	-	-	-	-
950-1000	0	-	-	-	-

Results of QC

A total of 22 profiles (917 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 917

Position on land test

On land: 0 of 22

Invalid position: 0 of 22

Regional range test

Error data (low): 0 of 917

Error data (high): 0 of 917

Gradient test

Error data: 0 of 917

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

Summary of QC

QC detected no unnatural profiles.
At depths of between 50 and 200 m in the seas around 7°N, there were differences above 2°C between observation data and the results of assimilation. The observation data showed sharper thermocline than the assimilation data.

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