In this report, we compile data obtained at stations KNOT(44°N, 155°E) and K2(47°N, 160°E) by JAMSTEC and correct the systematic errors in the data, in order to investigate the temporal variation of dissolved inorganic carbon and related properties (total alkalinity, temperature, salinity, oxygen, and nutrients (silicate, nitrate, nitrite, ammonium, and phosphate)) in the subarctic western North Pacific. Using this compiled data in addition to KNOT and K2 data by others (Carbon Dioxide Information Analysis Center CDIAC; http://cdiac.ornl.gov/oceans/Moorings/K2.html, http://cdiac.ornl.gov/oceans/Moorings/KNOT.html), the temporal variation of DIC and related properties in the subarctic western North Pacific were reported in Wakita et al. (2010).

Wakita, M., Watanabe, S., Murata, A., Tsurushima, N. and Honda M. (2010), Decadal change of dissolved inorganic carbon in the subarctic western North Pacific Ocean, Tellus, B, doi: 10.1111/j.1600-0889.2010.00476.x , 2010

• Hydrographic CO₂ Data Report at Station K2
• Hydrographic CO₂ Data Report at Station KNOT

• Format Information & Definition of Quality Control Flags


• K2

Data file : K2_bottle_data_jam.csv

Cruise ID and Bottle/CTD in the "JAMSTEC Data Site for Research Cruises";

Cruise ID	Bottle	CTD
MR01-K03
MR01-K04 Leg2
MR02-K05 Leg2
MR03-K01
NT03-07
MR04-02
NT04-05
MR04-04
MR04-06
MR05-01
MR05-04
MR06-03 Leg1
MR06-03 Leg2
MR07-05
MR08-05

It links to the Bottle/CTD data page of each cruise in the "JAMSTEC Data Site for Research Cruises". Bottle/CTD data posted at this data site is "corrected" in one cruise (i.e., systematic errors among cruises are not corrected.). Bottle/CTD data collected at other stations, the cruise report and other related data are also posted on this data site.
• KNOT

Data file : KNOT_bottle_data_jam.csv

Cruise ID and Bottle/CTD in the "JAMSTEC Data Site for Research Cruises";

Cruise ID	Bottle	CTD
MR97-02
MR98-K01
MR99-K02
MR00-K01
MR00-K03
MR01-K03
MR03-K01
NT03-07
MR04-02
NT04-05
MR04-04
MR04-06
MR05-01
MR05-04
MR06-03 Leg1
MR06-03 Leg2
MR07-01
MR07-05
MR08-05

It links to the Bottle/CTD data page of each cruise in the "JAMSTEC Data Site for Research Cruises". Bottle/CTD data posted at this data site is "corrected" in one cruise (i.e., systematic errors among cruises are not corrected.). Bottle/CTD data collected at other stations, the cruise report and other related data are also posted on this data site.

Users of the data here are requested to cite in the following manner.

• Hydrographic Data Report at Station K2, edited by M. Wakita, S. Watanabe, A. Murata and M. C. Honda, http://www.godac.jamstec.go.jp/k2/
• Hydrographic Data Report at Station KNOT, edited by M. Wakita, S. Watanabe, A. Murata, M. C. Honda and N. Tsurushima, http://www.godac.jamstec.go.jp/k2/

Carbon Dioxide Information Analysis Center (CDIAC)

• CO₂ Moorings and Time Series Project - Time Series K2 (Position: 47.0°N, 160.0°E)
• CO₂ Moorings and Time Series Project - Time Series KNOT (Position: 44.0°N, 155.0°E)

• for this Data Site :
• for data itself :

Masahide Wakita (E-mail:)
Shuichi Watanabe (E-mail: )
Mutsu Institute for Oceanography
Japan Agency for Marine-Earth Science and Technology
690 Kitasekine, Sekine, Mutsu-city, Aomori 035-0022