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GTSPP Data Product Centre for the North Pacific Region hosted by the Japan Meteorological Agency

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Ship Observations Team (SOT)

NORTHEWEST SANDERLING(VNVZ), PX11
Observation period : 2017/8/18 to 2017/8/23

This page shows results for the PX11 line based on monitoring by the NORTHEWEST SANDERLING and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
24	5856	-0.02	1.03	5.09	-3.45

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	493	-0.16	0.42	1.61	-1.34
50-100	475	-0.06	1.15	2.83	-2.51
100-150	475	-0.87	1.37	3.11	-3.45
150-200	475	-0.44	1.60	3.94	-3.15
200-250	475	0.16	1.50	4.37	-2.22
250-300	464	0.37	1.28	5.09	-1.47
300-350	450	0.15	0.82	3.08	-1.41
350-400	450	0.12	0.68	1.86	-1.56
400-450	450	0.12	0.62	1.72	-1.20
450-500	450	0.19	0.50	1.46	-0.73
500-550	174	0.22	0.43	1.22	-0.48
550-600	160	0.15	0.41	1.28	-0.37
600-650	160	0.13	0.39	1.25	-0.31
650-700	160	0.10	0.36	1.13	-0.37
700-750	160	0.05	0.33	0.89	-0.56
750-800	149	0.05	0.31	0.98	-0.49
800-850	138	-0.01	0.22	0.37	-0.59
850-900	94	0.04	0.22	0.31	-0.55
900-950	4	0.06	0.11	0.25	0.00
950-1000	0	-	-	-	-

Results of QC

A total of 24 profiles (805 data, reported by BATHY or TESAC) were received from the NORTHEWEST SANDERLING.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 805

Position on land test

On land: 0 of 24

Invalid position: 0 of 24

Regional range test

Error data (low): 0 of 805

Error data (high): 0 of 805

Gradient test

Error data: 0 of 805

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

Summary of QC

QC detected no unnatural profiles.
There were differences above 2°C between observation data and the results of assimilation at depths of between 50 and 350m. It's to be noted that the results of assimilation is considered to be less accurate in the marginal seas.

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