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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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Ship Observations Team (SOT)

USCGC MORGENTHAU(NDWA), PX38
Observation period : 2016/8/27 to 2016/9/1

This page shows results for the PX38 line based on monitoring by the USCGC MORGENTHAU and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
102	32006	-0.04	0.55	4.29	-26.12

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	2442	-0.24	1.28	4.29	-26.12
50-100	2475	-0.06	0.64	1.76	-2.99
100-150	2475	-0.07	0.52	1.73	-1.43
150-200	2475	-0.06	0.49	2.41	-1.38
200-250	2475	-0.06	0.41	2.49	-1.38
250-300	2475	-0.11	0.34	1.23	-1.30
300-350	2456	-0.06	0.42	3.61	-1.08
350-400	2450	-0.03	0.47	3.73	-0.85
400-450	2450	0.00	0.43	3.51	-0.87
450-500	2450	0.03	0.39	3.21	-0.65
500-550	980	0.02	0.37	3.00	-0.57
550-600	980	0.03	0.35	2.80	-0.60
600-650	980	0.04	0.34	2.66	-0.56
650-700	980	0.06	0.31	2.54	-0.52
700-750	970	0.06	0.28	2.35	-0.30
750-800	970	0.04	0.26	2.25	-0.30
800-850	969	0.03	0.25	2.20	-0.38
850-900	551	0.02	0.13	0.71	-0.38
900-950	3	-0.03	0.00	-0.03	-0.04
950-1000	0	-	-	-	-

Results of QC

A total of 102 profiles (72818 data, reported by BATHY or TESAC) were received from the USCGC MORGENTHAU.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 72818

Position on land test

On land: 0 of 102

Invalid position: 0 of 102

Regional range test

Error data (low): 0 of 72818

Error data (high): 0 of 72818

Gradient test

Error data: 38 of 72818

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 gradient test. The main cause will be "hitting bottom" of XBT.
There are large differences between observation data and the results of assimilation at depths of around 50m in the seas north of 30°N.
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 PX38 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