r/v mirai cruise report - · pdf fileerina matsumoto katsuhisa maeno . asuka doi kazuho...

R/V Mirai Cruise Report
MR11-08
WOCE-revisit cruise in the western Pacific
4th December, 2011 9th February, 2012
Japan Agency for Marine-Earth Science and Technology
(JAMSTEC)

Cruise Report ERRATA of the Nutrients part
page Error Correction
97 potassium nitrate
CAS No. 7757-91-1
potassium nitrate
CAS No. 7757-79-1

Content
I. Introduction
II. Observation
1. Cruise Narrative
2. Underway Observation
2.1 Navigation
2.2 Swath Bathymetry
2.3 Surface meteorological observation
2.4 Thermo-salinograph
2.5 pCO2 2.6 ADCP
2.7 Ceilometer observation
2.8 Air-sea surface eddy flux measurement
2.9 Lidar
2.10 Isotopes in rainfall and water vapor
2.11 Ship-borne Sky radiometer
2.12 Tropospheric aerosol and gas observations by MAX-DOAS and auxiliary techniques
2.13 Millimeter-wave radar
2.14 Sea surface gravity
2.15 On-board geomagnetic measurement
2.16 Radiosonde
2.17 Doppler radar
3. Station Observation
3.1 CTDO2 Measurements
3.2 Bottle Salinity
3.3 Density
3.4 Oxygen
3.5 Nutrients
3.6 Chlorofluorocarbons and Sulfur hexafluoride
3.7 Carbon items
3.8 Chlorophyll-a
3.9 Carbon isotopes
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3.10 Radioactive cesium and tritium
3.11 LADCP
3.12 Expendable Microstructure Profiler
3.13 XCTD
3.14 Ocean-origin gases
3.15 PFCs
3.16 Iodine-129
3.17 Plankton net sampling
4. Floats, Drifters and Moorings
4.1 Argo floats
III. Notice on Using
-2-

I. Introduction
It is well known that climate changes of a timescale more than a decade are influenced by changes of oceanic
conditions. Among various oceanic changes, we conducted shipboard observations focusing on storage and transport of
anthropogenic CO2, heat and freshwater in the ocean, which are important for global warming and relevant climate
changes. Our observation line (Figs. 1.1.1 and 1.1.2) is a meridional line, which is set in the western Pacific, and
traverses the main subtropical gyre in the ocean. By occupying the observation line, we intended to clarify: (1) storage of
anthropogenic CO2, dissolved oxygen, etc. in the subtropical gyre and the temporal changes, (2) temperature rise and
transport of dissolved substances along the route of Circumpolar Deep Water, and (3) current degree of ocean
acidification in the western Pacific. This study was conducted under the Global Ocean Ship-based Hydrographic
Investigations Program (abbreviated as GO-SHIP, http://www.go-ship.org/).
In addition to the objectives listed above, we were also aimed at elucidating dispersion of radioactive
substances, released into the sea unfortunately from the Fukushima Dai-ichi nuclear power plant.
During the 2nd leg, we could conduct hydrographic observations steadily. But during the 3rd leg, we had to
give up some hydrographic casts due to big waves.
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II. Observation
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1. Cruise Narrative Akihiko Murata (RIGC/JAMSTEC)
Yuichiro Kumamoto (RIGC/JAMSTEC)
1.1. Basic Information
Cruise track: Figs. 1.1.1 and 1.1.2
Cruise code: MR11-08
Expocode Leg 1: 49NZ20111204
Leg 2: 49NZ20111220
Leg 3: 49NZ20120113
GHPO section designation: P10
Ship name: R/V Mirai
Ports of call: Leg 1, Colombo, Sri Lanka Koror, Palau
Leg 2, Koror, Palau Guam, USA
Leg 3, Guam, USA Sekinehama, Japan
Cruise date: Leg 1, December 4, 2011 December 20, 2011
Leg 2, December 20, 2011 January 12, 2012
Leg 3, January 12, 2012 February 9, 2012
Chief scientists: Leg 1, Yuichiro Kumamoto ([email protected])
Leg 2, Akihiko Murata ([email protected])
Leg 3, Yuichiro Kumamoto ([email protected])
Ocean Climate Change Research Program
Research Institute for Global Change (RIGC)
Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2-15 Natsushima, Yokosuka, Kanagawa, Japan 237-0061
Fax: +81-46-867-9455
Number of Stations: Leg 2, 59 stations
Leg 3, 116 stations including 14 XCTD observations
-5-

Geographic Boundaries (for hydrographic stations):
10S 43N
140E151E
Floats and drifters deployed: 2 floats
Fig. 1.1.1 Cruise map during the entire period.
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Fig. 1.1.2 Detailed cruise map for legs 2 and 3.
-7-

Fig. 1.1.3 Water sampling positions.
1.2. List of Cruise Participants
List of Participants for leg 1
Yuichiro Kumamoto Chief scientist/carbon/water sampling RIGC/JAMSTEC
Kenichi Sasaki CFCs MIO/JAMSTEC
Katsunori Sagishima Chief technologist/nutrients/CFCs MWJ
Shoko Tatamisashi CFCs MWJ
Tomonori Watai pH/total alkalinity MWJ
Ayaka Hatsuyama pH/total alkalinity MWJ
Hatsumi Aoyama DIC MWJ
Kazuho Yoshida Chief technologist/meteorology/
geophysics/ADCP/XCTD GODI
Ryo Kimura Meteorology/geophysics/ADCP/XCTD GODI
-8-

Akihiko Murata Chief Scientist/CTD/water sampling RIGC/JAMSTEC
Yuichiro Kumamoto DO/thermosalinograph /14C RIGC/JAMSTEC
Hiroshi Uchida CTD/density/water sampling RIGC/JAMSTEC
Shinya Kouketsu LADCP/ADCP/water sampling RIGC/JAMSTEC
Kazuhiko Hayashi Water sampling RIGC/JAMSTEC
Kenichi Sasaki CFCs MIO/JAMSTEC
Moyap Kilepak Observer University of Papua New Guinea
Benjamin Malai Observer National Weather Service/PNG
Osamu Yoshida CH4 and N2O/water sampling Rakuno Gakuen
University
Yuki Okazaki CH4 and N2O/water sampling Rakuno Gakuen
University
Shinichi Oikawa CH4 and N2O/water sampling Rakuno Gakuen
University
Hikari Shimizu CH4 and N2O/water sampling Rakuno Gakuen
University
Satoshi Ozawa Chief technologist/CTD/water sampling MWJ
Hirokatsu Uno CTD/water sampling MWJ
Fujio Kobayashi Salinity MWJ
Kenichi Kato CTD/water sampling MWJ
Shinsuke Toyoda CTD/water sampling MWJ
Hiroki Ushiromura Salinity MWJ
Shungo Oshitani CTD/water sampling MWJ
Kenichiro Sato Nutrients MWJ
Minoru Kamata Nutrients MWJ
Masanori Enoki Nutrients MWJ
Tomonori Watai pH/total alkalinity MWJ
Yoshiko Ishikawa DIC/pCO2 MWJ
Miyo Ikeda DO MWJ
Ayaka Hatsuyama pH/total alkalinity MWJ
Hatsumi Aoyama DIC/pCO2 MWJ
Masahiro Orui CFCs MWJ
Makoto Takada Water sampling/radionuclides MWJ
Katsunori Sagishima CFCs MWJ
Shoko Tatamisashi CFCs MWJ
-9-

Kanako Yoshida DO MWJ
Kanako Hatsuyama pH/total alkalinity MWJ
Yuki Miyajima DO MWJ
Elena Hayashi Water sampling MWJ
Tatsuya Ando Water sampling MWJ
Hitomi Takahashi Water sampling MWJ
Mizuho Yasui Water sampling MWJ
Daiki Hayashi Water sampling MWJ
Yusuke Ogiwara Water sampling MWJ
Satoshi Okumura Chief technologist /meteorology/
Kazuho Yoshida Meteorology/geophysics/ADCP/XCTD GODI
Ryo Kimura Meteorology/geophysics/ADCP/XCTD GODI
Yuichiro Kumamoto Chief scientist/DO/14C RIGC/JAMSTEC
Hiroshi Uchida CTD/density/water sampling RIGC/JAMSTEC
Katsuro Katsumata XMP/LADCP/water sampling RIGC/JAMSTEC
Toshimasa Doi LADCP/water sampling RIGC/JAMSTEC
Kazuhiko Hayashi Water sampling RIGC/JAMSTEC
Kenichi Sasaki CFCs MIO / JAMSTEC
Minoru Kitamura Plankton Biogeos/JAMSTEC
Eric Cruz Plankton net dragging/water sampling NMFS/NOAA
Nobuyoshi Yamashita PFCs AIST
Yuki Okazaki CH4 and N2O/water sampling Rakuno Gakuen
University
Shinichi Oikawa CH4 and N2O/water sampling Rakuno Gakuen
University
Hikari Shimizu CH4 and N2O/water sampling Rakuno Gakuen
University
Yoshiko Ishikawa Chief technologist /DIC/pCO2 MWJ
Hideki Yamamoto Water sampling/radionuclides MWJ
Toru Idai CTD/water sampling MWJ
Kenichi Katayama CTD/water sampling MWJ
Naoko Miyamoto CTD/water sampling MWJ
-10

Tatsuya Tanaka
Tamami Ueno
Kenichiro Sato
Minoru Kamata
Tomonori Watai
Yasuhiro Arii
Misato Kuwahara
Hatsumi Aoyama
Makoto Takada
Shinichiro Yokokawa
Katsunori Sagishima
Shoko Tatamisashi
Hironori Sato
Kanako Yoshida
Takami Mori
Yasumi Yamada
Elena Hayashi
Tatsuya Ando
Rie Muranaka
Shihomi Saito
Emi Deguchi
Erina Matsumoto
Katsuhisa Maeno
Asuka Doi
Kazuho Yoshida
Toshimitsu Goto
Salinity MWJ
Salinity MWJ
Nutrients MWJ
Nutrients MWJ
pH/total alkalinity MWJ
Nutrients MWJ
DO MWJ
DIC/pCO2 MWJ
DIC/pCO2 MWJ
DO MWJ
CFCs MWJ
CFCs MWJ
DO MWJ
DO MWJ
CTD/water sampling MWJ
pH/total alkalinity MWJ
Water sampling MWJ
Water sampling MWJ
Water sampling MWJ
Water sampling MWJ
Water sampling MWJ
Water sampling MWJ
Chief technologist /meteorology/
Meteorology/geophysics/ADCP/XCTD GODI
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2. Underway Observation
2.1 Navigation
(1) Personnel
Kazuho Yoshida (Global Ocean Deve

r/v mirai cruise report - · pdf fileerina matsumoto katsuhisa maeno . asuka doi kazuho...

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