Wakkanai (Japan) Site History

History Summary

Station name Wakkanai
Country Japan
Latitude 45° 24.0' N
Longitude 141° 41.0' E
GLOSS No. 324
Contributor Japan Meteorological Agency
Instrument Type Fuess float operated gauge 2001-2005
Acoutstic gauge 2006-2009
Observational Periods Gauge operational: 1967 - present
Data available: 2001 - 2009

Benchmarks

Reference Level

All heights have been referred to the station Tide Gauge Zero (TGZ) which is linked to fixed bench marks.

Tide Gauge Benchmark (TGBM) Description

Japan Meteorlogical Agency Benchmark bolt inside tide gauge hut, adjacent to stilling well

Benchmark Relationships

Year Standard Mark (TGBM)
above Datum Line (TGZ)
Standard Mark (TGBM)
above Tokyo Peil (TP)
TGZ below TP
2001-2002 3.745 2.238 -1.507
2003-2004 3.745 2.113 -1.632
2005-2009 3.745 2.088 -1.657

Parameter Code

ASLVZZ01 - The elevation of the sea surface to a known datum, measured in metres.

Quality Assessment

The daily or monthly means do not reveal any obvious reference level shifts. Data spikes of about 10cm or less have not been corrected.

Completeness index (CI)

Sea level data from Japan is processed for each year. Occasionally data is missing from the data sets, either because the data set does not cover the whole year or because data has been flagged null. The number of cycles in a year with no missing data is calculated (based on the sample interval and whether a leap year). The completeness index calculates what proportion of the data expected in a year is present and not flagged null.

Quality index (QI)

During processing cycles considered suspect within a series are flagged M. The quality index calculates what proportion of the data available is not considered suspect.

Yearly overview of data

Year CI (%) QI (%) Start and end date (UTC) Sampling interval
(minutes)
Missing Data
(cycle no.)
Suspect Data
(cycle no.)
Parameter Code
2001 100.0 100.0 2000-12-31 15:00 to 2001-12-31 14:00 60 None None ASLVZZ01
2002 100.0 100.0 2001-12-31 15:00 to 2002-12-31 14:00 60 None None ASLVZZ01
2003 100.0 100.0 2002-12-31 15:00 to 2003-12-31 14:00 60 None None ASLVZZ01
2004 99.9 100.0 2003-12-31 15:00 to 2004-12-31 14:00 60 5819-5823 None ASLVZZ01
2005 99.9 100.0 2004-12-31 15:00 to 2005-12-31 14:00 60 6107-6111 None ASLVZZ01
2006 99.9 100.0 2005-12-31 15:00 to 2006-12-31 14:00 60 6107-6111 None ASLVZZ01
2007 99.9 100.0 2006-12-31 15:00 to 2007-12-31 14:00 60 6419-6421, 8080-8082 None ASLVZZ01
2008 99.9 100.0 2007-12-31 15:00 to 2008-12-31 14:00 60 5867-5871 None ASLVZZ01
2009 99.7 100.0 2008-12-31 15:00 to 2009-12-31 14:00 60 5819-5823 None ASLVZZ01