Auxiliary Material for
Small-scale variability patterns of DMS and phytoplankton in surface waters of the tropical and subtropical Atlantic, Indian and Pacific oceans
S-J.Royer
1 , A.S. Mahajan 2 , M. Galí 1† , E. Saltzman 3 , R. Simó 1*
1.
Institut de Ciències del Mar (CSIC), Barcelona, Catalonia, Spain
2.
Indian Institute of Tropical Meteorology (IITM), Pune, India
3.
University of California, Irvine, Dept of Earth System Science, Irvine, USA
† Now at Takuvik Joint International Laboratory and Québec-Océan, Université Laval,
Québec, Canada
Geophysical Research Letters, 2014
Introduction
This auxiliary material contains the cruise track of the circumnavigation expedition carried out between December 2010 and July 2011, with indication of the Longhurst’s biogeographical provinces visited. It also contains de province-average variability length scales (VLS) computed as in Asher et al. [2011]. Finally, it contains Pearson’s correlation coefficients between the VLS of dimethylsulfide (DMS) and phytoplankton fluorescence and the magnitudes of salinity, sea surface temperature (SST), potential density (sigma-T), DMS concentration (DMS), chlorophyll a fluorescence signal (Fluo), maximum efficiency of photosystem II (FvFm) and latitude, all measured underway during ship’s navigation.
1.
Fs01 (Figure S1). Circumnavigation track and leg numbers of the Malaspina
2010 expedition Continuous DMS data exist for parts of legs 2, 3, 4, 5 and 6. The background shows the biogeographical (Longhurst) provinces visited during the expedition.
2. ts01 (Table S1). List of biogeogeographical (Longhurst) provinces visited during
Malaspina 2010, ordered by date, number and mean length of the sections analyzed per province, and the corresponding mean variability length scale (VLS - km) for salinity, sea-surface temperature (SST), potential density (sigma-T), DMS, phytoplankton fluorescence (Fluo) and the efficiency of photosystem II (FvFm).
2.1 Column “Province #”, number of the province according to Longhurst [1998].
2.2 Column “Acronym”, acronym of the province according to Longhurst [1998].
2.3 Column “Province name”, full name of the province according to Longhurst [1998].

2.4 Column “# transects analyzed”, number of transects analyzed within the province.
2.5 Column “Date 2011”, dd/mm of the beginning and end of the section (including several transects).
2.6 Column “mean transect length”, km, mean length of the several transects within the province.
2.7 Column “salinity”, PSU, seawater salinity at 4 m depth as measured by underway thermosalinograph.
2.8 Column “SST”, degrees Celsius, seawater temperature at 4 m depth as measured by underway thermosalinograph.
2.9 Column “Sigma-T”, kg m
-3
, seawater potential density at 4 m depth as computed from salinity and temperature.
2.10 Column “DMS”, nmol L
-1
, seawater dumethylsulfide concentration measured by underway chemical ionization mass spectrometry.
2.11 Column “Fluo”, arbritary units, chlorophyll a fluorescence measured by underway
Fast Repetition Rate Fluorometry.
2.12 Column “FvFm”, adimentional, efficiency of photosystem II as measured by underway Fast Repetition Rate Fluorometry.
3. ts02 (Table S2). Pearson’s correlation coefficients between province-averaged variability length scales (VLS) of DMS and phytoplankton fluorescence (Fluo), and the magnitudes of several variables.
3.1 Column “Provinces”, group of provinces considered.
3.2 Column “VLS”, variability length scale computed according to Asher et al. [2011].
3.3 Column “salinity”, correlation coefficient to the seawater salinity at 4 m depth as measured by underway thermosalinograph.
3.4 Column “SST”, correlation coefficient to the seawater temperature at 4 m depth as measured by underway thermosalinograph.
3.5 Column “Sigma-T”, correlation coefficient to the seawater potential density at 4 m depth as computed from salinity and temperature.
3.6 Column “DMS”, correlation coefficient to the seawater dumethylsulfide concentration measured by underway chemical ionization mass spectrometry.

3.7 Column “Fluo”, correlation coefficient to the chlorophyll a fluorescence measured by underway Fast Repetition Rate Fluorometry.
3.8 Column “FvFm”, correlation coefficient to the efficiency of photosystem II as measured by underway Fast Repetition Rate Fluorometry.
2.9 Column “Latitude”, correlation coefficient to the latitude of the sampling.