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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100m TS by NPR-4DVAR

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Ship Observations Team (SOT)

NORTHWEST SANDPIPER(VNVG), PX11
Observation period : 2022/3/8 to 2022/3/11

This page shows results for the PX11 line based on monitoring by the NORTHWEST SANDPIPER and comparison with the result of assimilation by NPR-4DVAR.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
12	2657	0.30	0.71	2.67	-1.54

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	300	0.16	0.38	1.06	-1.01
50-100	271	0.42	0.75	2.38	-1.02
100-150	250	0.69	0.77	2.53	-1.33
150-200	250	0.68	0.91	2.67	-1.41
200-250	250	0.23	1.02	2.30	-1.54
250-300	250	0.14	0.76	1.95	-1.44
300-350	250	0.22	0.73	1.87	-1.32
350-400	233	0.22	0.54	1.91	-1.10
400-450	206	0.22	0.45	1.09	-0.73
450-500	148	0.26	0.41	0.92	-0.63
500-550	50	0.13	0.35	0.76	-0.56
550-600	50	0.05	0.16	0.44	-0.19
600-650	50	0.08	0.17	0.44	-0.07
650-700	48	0.05	0.21	0.54	-0.16
700-750	22	0.01	0.05	0.06	-0.09
750-800	10	-0.03	0.04	0.03	-0.09
800-850	10	-0.15	0.04	-0.11	-0.22
850-900	9	-0.26	0.03	-0.21	-0.31
900-950	0	-	-	-	-
950-1000	0	-	-	-	-

Results of QC

A total of 12 profiles (359 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 359

Position on land test

On land: 0 of 12

Invalid position: 0 of 12

Regional range test

Error data (low): 0 of 359

Error data (high): 0 of 359

Gradient test

Error data: 0 of 359

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 60 and 120 m in the seas around 8°N, there were differences above 2°C between observation data and the results of assimilation.

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 NPR-4DVAR	◊Distribution of differences (Obs. - Assim.) by depth

◊Vertical sections of differences (Obs. - Assim.)	◊Distribution of differences (Obs. - Assim.) by temperature