GTSPP Data Product Centre

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 : 2020/12/9 to 2020/12/15

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
23	5238	0.15	0.77	3.99	-2.94

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	434	0.05	0.33	0.98	-1.21
50-100	425	-0.47	0.85	1.61	-2.94
100-150	425	-0.03	1.18	3.55	-2.91
150-200	425	0.55	1.32	3.99	-2.73
200-250	425	0.40	1.06	3.00	-1.76
250-300	425	0.37	0.55	1.49	-0.86
300-350	425	0.35	0.62	1.46	-0.90
350-400	408	0.06	0.59	1.30	-1.17
400-450	394	0.07	0.44	1.02	-1.00
450-500	375	0.15	0.33	0.73	-0.84
500-550	150	0.16	0.28	0.74	-0.59
550-600	150	0.13	0.27	0.65	-0.57
600-650	144	0.11	0.27	0.46	-0.59
650-700	137	0.12	0.26	0.56	-0.50
700-750	130	0.13	0.25	0.57	-0.38
750-800	130	0.15	0.26	0.72	-0.27
800-850	130	0.17	0.25	0.78	-0.21
850-900	102	0.20	0.25	0.83	-0.28
900-950	4	0.31	0.07	0.43	0.25
950-1000	0	-	-	-	-

Results of QC

A total of 23 profiles (777 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 777

Position on land test

On land: 0 of 23

Invalid position: 0 of 23

Regional range test

Error data (low): 0 of 777

Error data (high): 0 of 777

Gradient test

Error data: 0 of 777

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 100 and 280 m in areas south of 9°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