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)

MARJORIE C(WDH6745), PX37
Observation period : 2024/4/22 to 2024/4/29

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

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
102	30076	0.06	0.54	3.93	-17.22

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	2358	0.02	0.98	1.60	-17.22
50-100	2350	0.07	0.45	1.53	-2.36
100-150	2350	0.10	0.62	2.62	-2.62
150-200	2350	0.11	0.81	3.05	-2.63
200-250	2350	0.09	0.84	3.93	-2.52
250-300	2333	0.04	0.60	2.69	-2.51
300-350	2325	0.05	0.38	1.53	-1.39
350-400	2325	0.06	0.27	1.19	-0.99
400-450	2325	0.06	0.25	1.05	-0.75
450-500	2325	0.04	0.21	0.88	-0.61
500-550	930	0.04	0.21	0.84	-0.47
550-600	910	0.03	0.22	0.86	-0.69
600-650	894	0.04	0.20	0.88	-0.66
650-700	882	0.04	0.18	0.82	-0.39
700-750	852	0.04	0.15	0.73	-0.31
750-800	850	0.04	0.14	0.68	-0.30
800-850	843	0.03	0.13	0.67	-0.32
850-900	518	0.05	0.14	0.70	-0.27
900-950	6	0.20	0.07	0.26	0.10
950-1000	0	-	-	-	-

Results of QC

A total of 102 profiles (75869 data, reported by BATHY or TESAC) were received from the MARJORIE C.
The results of JMA quality control are as follows.

Grounded test

Error data: 70 of 75869

Position on land test

On land: 0 of 102

Invalid position: 0 of 102

Regional range test

Error data (low): 0 of 75869

Error data (high): 0 of 75869

Gradient test

Error data: 7 of 75869

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 the depths between 200 m and 300 m in the seas around 148°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