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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)

NORTHWEST SANDPIPER(VNVG), PX11
Observation period : 2019/8/29 to 2019/9/2

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

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
11	3374	0.25	0.76	5.13	-2.99

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	275	-0.14	0.65	1.84	-1.63
50-100	275	0.65	1.54	5.13	-1.63
100-150	275	0.58	1.30	4.26	-2.99
150-200	275	0.10	0.95	2.39	-2.72
200-250	272	0.23	0.57	1.69	-1.27
250-300	250	0.29	0.43	1.36	-0.69
300-350	250	0.36	0.53	1.83	-0.32
350-400	250	0.32	0.46	1.64	-0.71
400-450	250	0.26	0.36	0.91	-0.65
450-500	250	0.16	0.25	0.61	-0.31
500-550	100	0.08	0.23	0.59	-0.32
550-600	100	0.10	0.17	0.48	-0.13
600-650	100	0.11	0.19	0.40	-0.53
650-700	100	0.14	0.24	0.68	-0.50
700-750	100	0.17	0.24	0.70	-0.23
750-800	100	0.18	0.24	0.74	-0.20
800-850	99	0.20	0.28	0.92	-0.20
850-900	52	0.26	0.37	0.97	-0.18
900-950	1	0.00	0.00	0.00	0.00
950-1000	0	-	-	-	-

Results of QC

A total of 11 profiles (373 data, reported by BATHY or TESAC) were received from the NORTHWEST SANDPIPER.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 373

Position on land test

On land: 0 of 11

Invalid position: 0 of 11

Regional range test

Error data (low): 0 of 373

Error data (high): 0 of 373

Gradient test

Error data: 0 of 373

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 areas south of 10°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