GTSPP Data Product Centre

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

Home

The last 30 days SOOP observation

Data on SOOP lines

SOOP ships

Monthly Report

Search BATHY & TESAC by platform

100m TS by NPR-4DVAR

IODE

JCOMMOPS

Ship Observations Team (SOT)

HORIZON ENTERPRISE(KRGB), PX37
Observation period : 2018/2/16 to 2018/2/21

This page shows results for the PX37 line based on monitoring by the HORIZON ENTERPRISE and comparison with the result of assimilation by MOVE-NP.

Overall statistics

Number of profiles	Number of data	AVE	RMSD	MAXD	MIND
83	27295	-0.17	0.72	4.95	-5.83

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	2075	-0.09	0.40	0.94	-1.25
50-100	2075	-0.27	0.78	2.20	-3.54
100-150	2075	-0.64	1.19	2.41	-3.84
150-200	2075	-0.49	0.97	2.50	-3.82
200-250	2075	-0.32	0.66	3.28	-2.63
250-300	2075	-0.22	0.53	1.54	-1.83
300-350	2075	-0.09	0.48	2.00	-1.61
350-400	2075	-0.08	0.44	2.46	-1.28
400-450	2075	-0.09	0.44	2.87	-1.23
450-500	2075	-0.09	0.44	3.21	-0.85
500-550	830	-0.08	0.48	3.45	-0.66
550-600	830	-0.04	0.53	3.82	-0.78
600-650	830	0.01	0.57	3.95	-0.57
650-700	830	0.05	0.62	4.16	-0.56
700-750	830	0.08	0.65	4.35	-0.46
750-800	830	0.10	0.67	4.51	-0.38
800-850	825	0.11	0.70	4.66	-0.26
850-900	661	0.16	0.80	4.79	-0.31
900-950	69	1.47	2.49	4.93	-5.25
950-1000	10	1.32	3.82	4.95	-5.83

Results of QC

A total of 83 profiles (37358 data, reported by BATHY or TESAC) were received from the HORIZON ENTERPRISE.
The results of JMA quality control are as follows.

Grounded test

Error data: 0 of 37358

Position on land test

On land: 0 of 83

Invalid position: 0 of 83

Regional range test

Error data (low): 360 of 37358

Error data (high): 204 of 37358

Gradient test

Error data: 58 of 37358

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'.
Among the data that passed JMA's automated quality control procedures, some "hitting bottom" data are found in the seas near the west coast of the United States(Refer to concerned figures) and the seas around Hawaiian Islands(Refer to concerned figures). The topography used our grounded test is too rough to catch the error.
There were differences above 2°C between observation data and the results of assimilation at depths of between 50 and 250m.

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 MOVE-NP	◊Distribution of differences (Obs. - Assim.) by depth

◊Vertical sections of differences (Obs. - Assim.)	◊Distribution of differences (Obs. - Assim.) by temperature