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)

HORIZON ENTERPRISE(KRGB), PX37
Observation period : 2022/3/9 to 2022/3/20

This page shows results for the PX37 line based on monitoring by the HORIZON ENTERPRISE and comparison with the result of assimilation by NPR-4DVAR.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
32	9933	0.11	0.43	2.49	-24.89

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	776	-0.03	0.94	0.83	-24.89
50-100	775	0.04	0.47	1.71	-1.57
100-150	775	0.28	0.61	2.49	-1.35
150-200	775	0.21	0.57	2.13	-1.16
200-250	775	0.10	0.37	1.17	-1.00
250-300	771	0.07	0.30	0.84	-0.81
300-350	750	0.14	0.27	0.91	-0.84
350-400	750	0.20	0.21	1.04	-0.38
400-450	750	0.14	0.17	0.62	-0.33
450-500	732	0.04	0.18	0.58	-0.42
500-550	290	-0.01	0.16	0.45	-0.36
550-600	290	0.03	0.14	0.44	-0.26
600-650	290	0.06	0.15	0.75	-0.21
650-700	290	0.09	0.18	0.82	-0.21
700-750	290	0.09	0.12	0.71	-0.14
750-800	290	0.10	0.10	0.45	-0.08
800-850	286	0.12	0.12	0.64	-0.14
850-900	259	0.13	0.13	0.64	-0.13
900-950	19	0.15	0.13	0.57	-0.07
950-1000	0	-	-	-	-

Results of QC

A total of 32 profiles (14001 data, reported by BATHY or TESAC) were received from the HORIZON ENTERPRISE.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 14001

Position on land test

On land: 0 of 32

Invalid position: 0 of 32

Regional range test

Error data (low): 0 of 14001

Error data (high): 0 of 14001

Gradient test

Error data: 3 of 14001

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

Summary of QC

QC detected some unnatural profiles shown in 'Results of QC'.
At depths of around 150 m in the seas around 136°W, 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 PX37 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