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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 : 2019/3/8 to 2019/3/11

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
10	2989	0.25	0.62	3.13	-2.97

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	250	0.07	0.20	0.92	-0.39
50-100	250	-0.25	0.80	1.70	-2.97
100-150	250	0.43	0.88	3.13	-1.85
150-200	250	0.55	0.74	2.76	-0.63
200-250	232	0.54	0.63	1.93	-0.83
250-300	225	0.59	0.56	1.73	-0.26
300-350	225	0.58	0.64	1.70	-0.28
350-400	225	0.38	0.54	1.78	-0.65
400-450	225	0.06	0.50	1.42	-0.79
450-500	225	0.07	0.38	1.02	-0.56
500-550	90	0.05	0.24	0.58	-0.32
550-600	90	-0.00	0.26	0.48	-0.60
600-650	84	0.02	0.22	0.43	-0.44
650-700	80	0.06	0.21	0.47	-0.29
700-750	80	0.10	0.24	0.49	-0.29
750-800	79	0.11	0.23	0.59	-0.25
800-850	70	0.14	0.30	0.70	-0.27
850-900	58	0.21	0.34	0.80	-0.23
900-950	1	0.44	0.00	0.44	0.44
950-1000	0	-	-	-	-

Results of QC

A total of 10 profiles (340 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 340

Position on land test

On land: 0 of 10

Invalid position: 0 of 10

Regional range test

Error data (low): 0 of 340

Error data (high): 0 of 340

Gradient test

Error data: 0 of 340

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 50 and 200 m in the seas around 8°N, there were differences above 2°C between observation data and the results of assimilation. The observation data showed sharper thermocline than the assimilation data.

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