A. Valente et al.: A compilation of global bio-optical in situ data 
r 
XV | 
3.5 
NOMAD 
3 
= 
s; 2.5 
2 
= 2 
N 
© 1.5, 
B 
5753 
chlorophyll @ and b, 19’-butanoyloxyfucoxanthin, 19’- 
hexanoyloxyfucoxanthin, alloxanthin, divinyl chlorophyll-a, 
fucoxanthin, lutein, peridinin, prasinoxanthin, violaxanthin, 
and zeaxanthin. The database is available through PAN- 
GAEA (https://doi.org/10.1594/PANGAEA.793246, Pelo- 
quin et al., 2013b). For this work, only measurements of total 
chlorophyll-a flagged with high quality were used. The time 
of day was unavailable and was set to 12:00:00 (UTC). These 
observations were flagged with “1” in column “flag_time”. 
The compiled variable was “chla_hple”. 
31.5 
) 
rrs(490)/rrs(555) 
10 
Figure 4. Ranges of remote-sensing reflectance band ratios (412 : 
443 and 490 : 555) for all data. The points from the NOMAD data 
set are shown in blue for reference. To maximize the number of 
ratios per data set, a search window up to 12nm was used when 
he four wavelengths (412, 443, 490, 555) were not simultaneously 
available. The effect of different search windows was negligible in 
the ratio distribution. 
One is a data collection entitled “IMOS National Reference 
Station (NRS) — Phytoplankton HPLC Pigment Composition 
Analysis”, which was acquired from the Australian Ocean 
Data Network portal (https://portal.aodn.org.au, last access: 
18 December 2022). This data set comprises of phytoplank- 
ton pigment composition measured by HPLC collected with 
small vessels on monthly basis at nine National Reference 
Stations as part of the IMOS National Mooring Network. 
The other chlorophyll-a data set measured by HPLC and 
fluorometry methods is a subset (2015-2021) of the IMOS 
Bio-optical Database also available through the AODN por- 
:al. This database comprises of a suite of bio-optical parame- 
ers from samples collected during research voyages in Aus- 
:ralian waters and is used by the IMOS Ocean Colour Sub- 
Facility to assess the accuracy of satellite ocean colour prod- 
ucts in Australian coastal and open ocean waters (Schroeder 
et al., 2016). The previous data compilations include an ear- 
lier subset of HPLC chlorophyll-a concentration from the 
IMOS Bio-optical Database that was acquired through the 
SeaBASS archive. These data can be found under “dataset” 
string “seabass” and Lesley Clementson as data contribu- 
(or. The compiled variables for IMOS were “chla_hplc” and 
“chla fluor”. 
2.2.23 MARineEcosytem DATa (MAREDAT) 
MAREDAT database is a global assemblage of pigments 
measured by HPLC (Peloquin et al., 2013a) from combi- 
nation of 136 independent field data sets, solicited from 
investigators and databases. The database provides high 
quality measurements of taxonomic pigments including 
attos://doi.org/10.5194/essd-14-573 /-2027 
2.2.24 Palmer Station Long-term Ecological Research 
(PALMER) 
PALMER is a monitoring station located in western Antarc- 
tic_ Peninsula. The Palmer station investigates the ma- 
rine ecology of the Southern Ocean with focus on the 
pelagic marine ecosystem, including sea ice habitats, re- 
gional oceanography, and nesting sites of seabird predators. 
Ihe PALMER data include measurements of meteorolog- 
ical, oceanographic, sea ice, predators, nutrients and bio- 
geochemistry, pigments, primary production, zooplankton, 
and microbes parameters. This work used the measurements 
of chlorophyll analysed by HPLC and fluorometry taken 
at the Palmer Station (Palmer Station Antarctica LTER et 
al., 2020a, b) and from the annual cruises off the coast of 
the Western Antarctica Peninsula (Palmer Station Antarc- 
tica LTER et al., 2018, 2020c). The compiled variables were 
“chla_hple”. “chla_fluor”. 
2.2.25 SeaDataNet archive (SEADATANET) 
SeaDataNet is a Pan-European infrastructure for ocean and 
marine data management. It aims to develop a standardized 
system for managing large and diverse data sets collected by 
oceanographic cruises and automatic observation systems. 
For this work, discrete chlorophyll-a concentration observa- 
tions with an “access restriction”” set to “academic” and “un- 
restricted” were acquired from the SeaDataNet platform with 
guidance from the helpdesk. Only data from the “Institute of 
Marine Research — Norwegian Marine Data Centre (NMD), 
Norway”, which comprised most of the acquired data, were 
used. All chlorophyll observations were from discrete sam- 
ples measured by fluorometric, spectrophotometric, or HPLC 
methods, but the exact method was not given. Thus, the ob- 
servations were marked as “chla_fluor”, although some were 
possibly from HPLC measurements, and were flagged with 
“1” in a column “flag_chla_method”. The compiled variables 
were ‘“chla fluor” 
2.2.26 
Data provided by Trevor Platt and Shubha 
Sathvendranath (TPSS) 
In this work, the TPSS data source refers to a group of ob- 
servations that were provided to this compilation by Trevor 
Earth Syst. Sei. Data, 14. 5737-5770. 2022