The particle size distribution (PSD) was measured with a Multisizer III analyzer (Beckman-Coulter). Measurements were made with two aperture tubes of different diameters (30 and 200 micrometers) and the results merged to create a single PSD. The range of particle sizes covered with the merged measurements was from 0.7 to 120 micrometers (equivalent spherical diameters). For each sample and for each corresponding particle-free reference that serves as a baseline, multiple replicate measurements were obtained and summed. Each data file contains the lower, center, and upper limits of each size bin, and the concentration of particles per unit volume measured within each size bin (units of particle number per cm^-3).
Upon consultation in advance with the chief of investigation and the person(s) in charge of research issues who gathered that data, we request that the text of the results material contain a statement to the effect that it was obtained during the R/V Mirai cruise of MR17-05C, the Chief Scientist, Shigeto Nishino (JAMSTEC), and the following Principal Investigators (PIs) for gathering the data.
Chief Scientist Shigeto Nishino Japan Agency for Marine - Earth Science and Technology (JAMSTEC) 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan Tel: +81-46-867-9487, Fax: +81-46-867-9437 E-mail: firstname.lastname@example.org
PI Toru Hirawake (Hokkaido Unviersity)
Please also mention that this cruise was supported by the Arctic Challenge for Sustainability (ArCS) Project, which was funded by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), and the Global Change Observation Mission-Climate (GCOM-C) mission of Japan Aerospace Exploration Agency (JAXA).
Multisizer III analyzer (Beckman-Coulter)
The Multisizer III uses the Coulter Principle to measure particle volume, number, surface area and mass with different size range.
The filename contains a 2 digit code consisting of cc**, where ** is an internal SIO water sample identification number. The files entitled "SampleLog_CoulterCounter_MR17-05C.txt" and "SIO_StationLog_MR17-05C.txt" contain additional information about each sample and station.