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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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Ship Observations Team (SOT)

NORTHWEST SANDPIPER(VNVG), PX11
Observation period : 2021/1/11 to 2021/1/15

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
17	5002	0.07	0.58	3.04	-2.65

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	425	0.12	0.32	0.80	-0.91
50-100	400	-0.02	0.59	1.95	-2.05
100-150	400	0.11	0.82	2.74	-2.52
150-200	400	-0.12	0.97	2.56	-2.65
200-250	400	0.04	0.83	3.04	-1.55
250-300	400	0.11	0.57	1.94	-0.93
300-350	383	0.18	0.54	1.73	-0.73
350-400	375	0.12	0.52	1.16	-0.94
400-450	375	0.08	0.47	0.92	-0.72
450-500	375	0.08	0.35	0.73	-0.50
500-550	145	0.07	0.30	0.68	-0.43
550-600	140	0.09	0.29	0.62	-0.47
600-650	140	0.07	0.28	0.56	-0.53
650-700	140	0.04	0.27	0.52	-0.55
700-750	140	0.08	0.24	0.50	-0.43
750-800	137	0.08	0.21	0.47	-0.36
800-850	130	0.07	0.19	0.44	-0.35
850-900	94	0.05	0.19	0.42	-0.31
900-950	3	0.13	0.40	0.41	-0.43
950-1000	0	-	-	-	-

Results of QC

A total of 17 profiles (552 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 552

Position on land test

On land: 0 of 17

Invalid position: 0 of 17

Regional range test

Error data (low): 0 of 552

Error data (high): 0 of 552

Gradient test

Error data: 0 of 552

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

Summary of QC

QC detected no unnatural profiles.
There were differences above 2°C between observation data and the results of assimilation at depths of between 100 and 180 m in the seas around 5°N and at depths of between 180 and 240 m in the seas around 11°N. 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