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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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NORTHWEST SANDPIPER(VNVG), PX11
Observation period : 2021/12/11 to 2021/12/15

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
10	2660	0.27	0.75	3.45	-3.06

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	250	0.21	0.33	0.83	-0.48
50-100	250	0.13	1.13	2.54	-3.06
100-150	250	0.44	1.34	3.45	-2.91
150-200	250	0.40	0.93	2.92	-2.68
200-250	250	0.24	0.77	1.81	-2.73
250-300	250	0.33	0.41	1.64	-0.37
300-350	232	0.19	0.37	0.91	-0.73
350-400	203	0.37	0.41	1.31	-0.37
400-450	179	0.19	0.60	1.53	-0.55
450-500	172	0.22	0.65	1.96	-0.55
500-550	60	0.49	0.74	2.01	-0.38
550-600	52	0.30	0.51	2.06	-0.20
600-650	50	0.21	0.23	0.61	-0.23
650-700	50	0.21	0.23	0.53	-0.22
700-750	50	0.25	0.19	0.53	-0.01
750-800	44	0.17	0.24	0.53	-0.16
800-850	40	0.01	0.21	0.44	-0.19
850-900	28	-0.05	0.10	0.13	-0.21
900-950	0	-	-	-	-
950-1000	0	-	-	-	-

Results of QC

A total of 10 profiles (340 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 340

Position on land test

On land: 0 of 10

Invalid position: 0 of 10

Regional range test

Error data (low): 0 of 340

Error data (high): 0 of 340

Gradient test

Error data: 0 of 340

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 80 and 180 m in areas south of 6°N, there were differences above 2°C between observation data and the results of assimilation. The observation data showed deeper mixed layer and 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