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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)

SAFMARINE MULANJE(VROX6), PX05
Observation period : 2016/2/21 to 2016/3/2

This page shows results for the PX05 line based on monitoring by the SAFMARINE MULANJE and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
246	45803	-0.13	0.96	4.93	-27.68

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	3490	0.05	1.66	2.62	-27.68
50-100	3475	-0.26	1.08	2.70	-5.57
100-150	3475	-0.43	1.42	2.90	-7.26
150-200	3475	-0.39	1.48	4.38	-6.97
200-250	3475	-0.28	1.27	4.93	-5.55
250-300	3475	-0.10	0.70	2.81	-2.56
300-350	3475	-0.03	0.54	2.58	-1.92
350-400	3475	-0.06	0.50	2.32	-1.52
400-450	3475	-0.07	0.52	2.30	-1.74
450-500	3475	-0.05	0.50	1.75	-1.83
500-550	1390	-0.05	0.49	1.80	-1.83
550-600	1390	-0.07	0.45	1.47	-1.73
600-650	1390	-0.06	0.42	1.21	-2.15
650-700	1390	-0.03	0.42	1.31	-2.08
700-750	1390	-0.02	0.40	1.61	-1.92
750-800	1390	-0.02	0.33	1.47	-1.59
800-850	1389	-0.01	0.25	1.03	-1.23
850-900	1160	0.02	0.20	0.73	-0.80
900-950	149	0.10	0.20	0.53	-0.64
950-1000	0	-	-	-	-

Results of QC

A total of 246 profiles (180703 data, reported by BATHY or TESAC) were received from the SAFMARINE MULANJE.
The results of JMA quality control are as follows.

Grounded test

Error data: 1879 of 180703

Position on land test

On land: 0 of 246

Invalid position: 0 of 246

Regional range test

Error data (low): 0 of 180703

Error data (high): 27 of 180703

Gradient test

Error data: 100 of 180703

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

Summary of QC

Some erroneous profiles are detected by JMA's automated quality control procedures. These are checked by the grounded test, regional range test and the gradient test.
There are large differences at depths of between 100 and 250m in the seas between equator and 10°N. The observation data shows sharper thermocline better than the assimilation data.
With the exception of the above errors and differences, there were no significant biases in comparison with the results of assimilation by JMA.

Figures

◊Station map	◊Vertical temperature profile Vertical profile of temperature along the observing line of PX05 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