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

Data on SOOP lines

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100m TS by NPR-4DVAR

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Ship Observations Team (SOT)

NORTHWEST SANDPIPER(VNVG), PX11
Observation period : 2022/6/4 to 2022/6/8

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
16	4045	0.30	0.72	4.10	-2.67

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	400	0.16	0.59	1.99	-1.18
50-100	388	0.34	0.98	2.47	-2.67
100-150	338	0.32	1.18	4.10	-1.53
150-200	325	0.51	1.04	3.80	-1.47
200-250	325	0.55	0.84	2.15	-1.23
250-300	325	0.39	0.60	1.62	-0.92
300-350	325	0.33	0.56	1.60	-0.87
350-400	320	0.20	0.60	1.37	-1.09
400-450	300	0.19	0.41	1.13	-0.80
450-500	284	0.18	0.37	1.09	-0.47
500-550	110	0.20	0.39	1.00	-0.45
550-600	106	0.23	0.35	1.16	-0.33
600-650	100	0.20	0.28	0.73	-0.28
650-700	100	0.17	0.31	0.80	-0.47
700-750	99	0.17	0.28	0.67	-0.31
750-800	84	0.15	0.24	0.57	-0.23
800-850	72	0.18	0.20	0.54	-0.19
850-900	41	0.25	0.17	0.56	-0.03
900-950	3	0.76	0.19	0.97	0.51
950-1000	0	-	-	-	-

Results of QC

A total of 16 profiles (576 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 576

Position on land test

On land: 0 of 16

Invalid position: 0 of 16

Regional range test

Error data (low): 0 of 576

Error data (high): 0 of 576

Gradient test

Error data: 0 of 576

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 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