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Bracher, Astrid; Liu, Yangyang (2021): Spectrophotometric measurements of absorption coefficients by phytoplankton in the Atlantic Southern Ocean during RV POLARSTERN cruise PS103 in Dec 2016 to Jan 2017. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.938193 (dataset in review)

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Abstract:
Water samples were taken during the Southern Atlantic expedition PS103 with RV Polarstern from 17 Dec 2016 to 28 Jan 2017. Water samples were collected from CTD Niskin bottles at six different depths from the upper 100 to 180 m and additionally from the ship's seawater supply pumped through teflon tubing from about 11m depth during underway further described in Bracher (2019). All collected samples were filtered through 25 cm Whatman GF/F filters, respectively, under low-vacuum pressure (below 200 mbar). Blank filters were collected by soaking them in 0.2um filtered seawater. Measurements for particulate and non-algal (NAP) absorption were performed directly after filtration the quantitative filtration techniques-intergrative cavity measurement device and procedure from Röttgers et al. (2016) as described in Liu et al. (2018). Phytoplankton absorption (aph) was derived by subtracting the NAP from the particulate absorption.
Keyword(s):
absorption; Atlantic Transect; inherent optical properties; particulate matter; Phytoplankton
Supplement to:
Álvarez, Eva; Losa, Svetlana N; Bracher, Astrid; Voelker, C (submitted): Impact of non-photosynthetic pigments content in the global variability of phytoplankton absorption coefficients. Journal of Advances in Modeling Earth Systems
Related to:
Bracher, Astrid (2019): Phytoplankton pigment concentrations in the Southern Ocean during RV POLARSTERN cruise PS103 in Dec 2016 to Jan 2017. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.898941
Liu, Yangyang; Röttgers, Rüdiger; Ramírez-Pérez, Marta; Dinter, Tilman; Steinmetz, Francois; Nöthig, Eva-Maria; Hellmann, Sebastian; Wiegmann, Sonja; Bracher, Astrid (2018): Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color. Optics Express, 26(14), A678-A696, https://doi.org/10.1364/OE.26.00A678
Neeley, Aimee; Mannino, Antonio; Boss, Emmanuel; D'Sa, Eurico J; Freeman, Scott; Fry, Ed; Mueller, James L; Pegau, Scott; Reynolds, Rick A; Roesler, Collin; Röttgers, Rüdiger; Stramski, Dariusz; Twardowski, Michael S (2018): Ocean Optics and Biogeochemistry Protocols for Satellite Ocean Colour Sensor Validation; Volume 1.0. Inherent Optical Property Measurements and Protocols: Absorption Coefficient. International Ocean Colour Coordinating Group (IOCCG), https://doi.org/10.25607/OBP-119
Röttgers, Rüdiger; Doxaran, David; Dupouy, Cécile (2016): Quantitative filter technique measurements of spectral light absorption by aquatic particles using a portable integrating cavity absorption meter (QFT-ICAM). Optics Express, 24(2), A1, https://doi.org/10.1364/OE.24.0000A1
Funding:
German Science Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: -63.895496 * Median Longitude: -15.840215 * South-bound Latitude: -71.364530 * West-bound Longitude: -53.702820 * North-bound Latitude: -35.497700 * East-bound Longitude: 16.829000
Date/Time Start: 2016-12-17T04:11:00 * Date/Time End: 2017-01-28T06:11:00
Minimum DEPTH, water: 1.6 m * Maximum DEPTH, water: 150.0 m
Event(s):
PS103_1-1 * Latitude: -45.954880 * Longitude: 6.287270 * Date/Time: 2016-12-20T13:22:00 * Location: South Atlantic Ocean * Campaign: PS103 (ANT-XXXII/2) * Basis: Polarstern * Method/Device: CTD-Acoustic Doppler Current Profiler (CTD-ADCP)
PS103_2-4 * Latitude: -49.013850 * Longitude: 2.837120 * Date/Time: 2016-12-21T18:17:00 * Elevation: -4058.0 m * Location: South Atlantic Ocean * Campaign: PS103 (ANT-XXXII/2) * Basis: Polarstern * Method/Device: CTD-Acoustic Doppler Current Profiler (CTD-ADCP)
PS103_3-1 * Latitude: -51.993470 * Longitude: 2.100240 * Date/Time: 2016-12-22T13:29:00 * Elevation: -2833.0 m * Location: South Atlantic Ocean * Campaign: PS103 (ANT-XXXII/2) * Basis: Polarstern * Method/Device: CTD-Acoustic Doppler Current Profiler (CTD-ADCP)
Comment:
Further specifications on the measurements:
a) Instrument: light source: UV-VIS lamp (CF-1000- HC lamp, Illumination Technology, USA); absorption meter: Quantitative Filter Technique - Integrating Cavity Absorption Meter (QFT-ICAM) (Röttgers et al., 2016) with 80 mm- diameter integrating sphere; detector: photodiode array spectrometer (AVASPEC-ULS2048-RS-USB2, Avantes, the Netherlands).
b) wavelength range of scan and resolution: 313.5-875.7 nm, 0.3 nm.
c) slit band width: 2 nm.
d) sample filters were bleached with 10% sodium hypochlorite (NaClO) solution for the OD measurement of NAP.
e) samples were measured for four times and bleached samples were measured twice.
f) dark current and blank filters were measured and subtracted.
Further specifications about data analysis:
a) interpolated wavelength range and resolution: 320-844 nm, 2nm.
b) wavelength range for fluorescence correction: 670:800 nm.
c) diameter of sample patch on GF/F filter: 2.133 cm.
d) pathlength amplification factor (beta correction factor): 4.06 (Röttgers et al., 2016).
e) no scattering correction for total particle absorption is applied; NAP absorption was adjusted with an offset in the range of 710-750 nm so that the median value of NAP absorption equals the median value of in total particle absorption in this spectral range. This adjustment is based on the assumption that phytoplankton pigments do not absorb in near-infrared (Neeley et al., 2018). This adjustment was not applied to NAP OD data.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventBracher, Astrid
2DATE/TIMEDate/TimeBracher, AstridGeocode
3Sample IDSample IDBracher, Astrid
4LATITUDELatitudeBracher, AstridGeocode
5LONGITUDELongitudeBracher, AstridGeocode
6DEPTH, waterDepth watermBracher, AstridGeocode
7Sample volumeSamp vollBracher, Astridfiltered
8Absorption coefficient, phytoplankton, at 350 nmaph3501/mBracher, Astrid
9Absorption coefficient, phytoplankton, at 352 nmaph3521/mBracher, Astrid
10Absorption coefficient, phytoplankton, at 354 nmaph3541/mBracher, Astrid
11Absorption coefficient, phytoplankton, at 356 nmaph3561/mBracher, Astrid
12Absorption coefficient, phytoplankton, at 358 nmaph3581/mBracher, Astrid
13Absorption coefficient, phytoplankton, at 360 nmaph3601/mBracher, Astrid
14Absorption coefficient, phytoplankton, at 362 nmaph3621/mBracher, Astrid
15Absorption coefficient, phytoplankton, at 364 nmaph3641/mBracher, Astrid
16Absorption coefficient, phytoplankton, at 366 nmaph3661/mBracher, Astrid
17Absorption coefficient, phytoplankton, at 368 nmaph3681/mBracher, Astrid
18Absorption coefficient, phytoplankton, at 370 nmaph3701/mBracher, Astrid
19Absorption coefficient, phytoplankton, at 372 nmaph3721/mBracher, Astrid
20Absorption coefficient, phytoplankton, at 374 nmaph3741/mBracher, Astrid
21Absorption coefficient, phytoplankton, at 376 nmaph3761/mBracher, Astrid
22Absorption coefficient, phytoplankton, at 378 nmaph3781/mBracher, Astrid
23Absorption coefficient, phytoplankton, at 380 nmaph3801/mBracher, Astrid
24Absorption coefficient, phytoplankton, at 382 nmaph3821/mBracher, Astrid
25Absorption coefficient, phytoplankton, at 384 nmaph3841/mBracher, Astrid
26Absorption coefficient, phytoplankton, at 386 nmaph3861/mBracher, Astrid
27Absorption coefficient, phytoplankton, at 388 nmaph3881/mBracher, Astrid
28Absorption coefficient, phytoplankton, at 390 nmaph3901/mBracher, Astrid
29Absorption coefficient, phytoplankton, at 392 nmaph3921/mBracher, Astrid
30Absorption coefficient, phytoplankton, at 394 nmaph3941/mBracher, Astrid
31Absorption coefficient, phytoplankton, at 396 nmaph3961/mBracher, Astrid
32Absorption coefficient, phytoplankton, at 398 nmaph3981/mBracher, Astrid
33Absorption coefficient, phytoplankton, at 400 nmaph4001/mBracher, Astrid
34Absorption coefficient, phytoplankton, at 402 nmaph4021/mBracher, Astrid
35Absorption coefficient, phytoplankton, at 404 nmaph4041/mBracher, Astrid
36Absorption coefficient, phytoplankton, at 406 nmaph4061/mBracher, Astrid
37Absorption coefficient, phytoplankton, at 408 nmaph4081/mBracher, Astrid
38Absorption coefficient, phytoplankton, at 410 nmaph4101/mBracher, Astrid
39Absorption coefficient, phytoplankton, at 412 nmaph4121/mBracher, Astrid
40Absorption coefficient, phytoplankton, at 414 nmaph4141/mBracher, Astrid
41Absorption coefficient, phytoplankton, at 416 nmaph4161/mBracher, Astrid
42Absorption coefficient, phytoplankton, at 418 nmaph4181/mBracher, Astrid
43Absorption coefficient, phytoplankton, at 420 nmaph4201/mBracher, Astrid
44Absorption coefficient, phytoplankton, at 422 nmaph4221/mBracher, Astrid
45Absorption coefficient, phytoplankton, at 424 nmaph4241/mBracher, Astrid
46Absorption coefficient, phytoplankton, at 426 nmaph4261/mBracher, Astrid
47Absorption coefficient, phytoplankton, at 428 nmaph4281/mBracher, Astrid
48Absorption coefficient, phytoplankton, at 430 nmaph4301/mBracher, Astrid
49Absorption coefficient, phytoplankton, at 432 nmaph4321/mBracher, Astrid
50Absorption coefficient, phytoplankton, at 434 nmaph4341/mBracher, Astrid
51Absorption coefficient, phytoplankton, at 436 nmaph4361/mBracher, Astrid
52Absorption coefficient, phytoplankton, at 438 nmaph4381/mBracher, Astrid
53Absorption coefficient, phytoplankton, at 440 nmaph4401/mBracher, Astrid
54Absorption coefficient, phytoplankton, at 442 nmaph4421/mBracher, Astrid
55Absorption coefficient, phytoplankton, at 444 nmaph4441/mBracher, Astrid
56Absorption coefficient, phytoplankton, at 446 nmaph4461/mBracher, Astrid
57Absorption coefficient, phytoplankton, at 448 nmaph4481/mBracher, Astrid
58Absorption coefficient, phytoplankton, at 450 nmaph4501/mBracher, Astrid
59Absorption coefficient, phytoplankton, at 452 nmaph4521/mBracher, Astrid
60Absorption coefficient, phytoplankton, at 454 nmaph4541/mBracher, Astrid
61Absorption coefficient, phytoplankton, at 456 nmaph4561/mBracher, Astrid
62Absorption coefficient, phytoplankton, at 458 nmaph4581/mBracher, Astrid
63Absorption coefficient, phytoplankton, at 460 nmaph4601/mBracher, Astrid
64Absorption coefficient, phytoplankton, at 462 nmaph4621/mBracher, Astrid
65Absorption coefficient, phytoplankton, at 464 nmaph4641/mBracher, Astrid
66Absorption coefficient, phytoplankton, at 466 nmaph4661/mBracher, Astrid
67Absorption coefficient, phytoplankton, at 468 nmaph4681/mBracher, Astrid
68Absorption coefficient, phytoplankton, at 470 nmaph4701/mBracher, Astrid
69Absorption coefficient, phytoplankton, at 472 nmaph4721/mBracher, Astrid
70Absorption coefficient, phytoplankton, at 474 nmaph4741/mBracher, Astrid
71Absorption coefficient, phytoplankton, at 476 nmaph4761/mBracher, Astrid
72Absorption coefficient, phytoplankton, at 478 nmaph4781/mBracher, Astrid
73Absorption coefficient, phytoplankton, at 480 nmaph4801/mBracher, Astrid
74Absorption coefficient, phytoplankton, at 482 nmaph4821/mBracher, Astrid
75Absorption coefficient, phytoplankton, at 484 nmaph4841/mBracher, Astrid
76Absorption coefficient, phytoplankton, at 486 nmaph4861/mBracher, Astrid
77Absorption coefficient, phytoplankton, at 488 nmaph4881/mBracher, Astrid
78Absorption coefficient, phytoplankton, at 490 nmaph4901/mBracher, Astrid
79Absorption coefficient, phytoplankton, at 492 nmaph4921/mBracher, Astrid
80Absorption coefficient, phytoplankton, at 494 nmaph4941/mBracher, Astrid
81Absorption coefficient, phytoplankton, at 496 nmaph4961/mBracher, Astrid
82Absorption coefficient, phytoplankton, at 498 nmaph4981/mBracher, Astrid
83Absorption coefficient, phytoplankton, at 500 nmaph5001/mBracher, Astrid
84Absorption coefficient, phytoplankton, at 502 nmaph5021/mBracher, Astrid
85Absorption coefficient, phytoplankton, at 504 nmaph5041/mBracher, Astrid
86Absorption coefficient, phytoplankton, at 506 nmaph5061/mBracher, Astrid
87Absorption coefficient, phytoplankton, at 508 nmaph5081/mBracher, Astrid
88Absorption coefficient, phytoplankton, at 510 nmaph5101/mBracher, Astrid
89Absorption coefficient, phytoplankton, at 512 nmaph5121/mBracher, Astrid
90Absorption coefficient, phytoplankton, at 514 nmaph5141/mBracher, Astrid
91Absorption coefficient, phytoplankton, at 516 nmaph5161/mBracher, Astrid
92Absorption coefficient, phytoplankton, at 518 nmaph5181/mBracher, Astrid
93Absorption coefficient, phytoplankton, at 520 nmaph5201/mBracher, Astrid
94Absorption coefficient, phytoplankton, at 522 nmaph5221/mBracher, Astrid
95Absorption coefficient, phytoplankton, at 524 nmaph5241/mBracher, Astrid
96Absorption coefficient, phytoplankton, at 526 nmaph5261/mBracher, Astrid
97Absorption coefficient, phytoplankton, at 528 nmaph5281/mBracher, Astrid
98Absorption coefficient, phytoplankton, at 530 nmaph5301/mBracher, Astrid
99Absorption coefficient, phytoplankton, at 532 nmaph5321/mBracher, Astrid
100Absorption coefficient, phytoplankton, at 534 nmaph5341/mBracher, Astrid
101Absorption coefficient, phytoplankton, at 536 nmaph5361/mBracher, Astrid
102Absorption coefficient, phytoplankton, at 538 nmaph5381/mBracher, Astrid
103Absorption coefficient, phytoplankton, at 540 nmaph5401/mBracher, Astrid
104Absorption coefficient, phytoplankton, at 542 nmaph5421/mBracher, Astrid
105Absorption coefficient, phytoplankton, at 544 nmaph5441/mBracher, Astrid
106Absorption coefficient, phytoplankton, at 546 nmaph5461/mBracher, Astrid
107Absorption coefficient, phytoplankton, at 548 nmaph5481/mBracher, Astrid
108Absorption coefficient, phytoplankton, at 550 nmaph5501/mBracher, Astrid
109Absorption coefficient, phytoplankton, at 552 nmaph5521/mBracher, Astrid
110Absorption coefficient, phytoplankton, at 554 nmaph5541/mBracher, Astrid
111Absorption coefficient, phytoplankton, at 556 nmaph5561/mBracher, Astrid
112Absorption coefficient, phytoplankton, at 558 nmaph5581/mBracher, Astrid
113Absorption coefficient, phytoplankton, at 560 nmaph5601/mBracher, Astrid
114Absorption coefficient, phytoplankton, at 562 nmaph5621/mBracher, Astrid
115Absorption coefficient, phytoplankton, at 564 nmaph5641/mBracher, Astrid
116Absorption coefficient, phytoplankton, at 566 nmaph5661/mBracher, Astrid
117Absorption coefficient, phytoplankton, at 568 nmaph5681/mBracher, Astrid
118Absorption coefficient, phytoplankton, at 570 nmaph5701/mBracher, Astrid
119Absorption coefficient, phytoplankton, at 572 nmaph5721/mBracher, Astrid
120Absorption coefficient, phytoplankton, at 574 nmaph5741/mBracher, Astrid
121Absorption coefficient, phytoplankton, at 576 nmaph5761/mBracher, Astrid
122Absorption coefficient, phytoplankton, at 578 nmaph5781/mBracher, Astrid
123Absorption coefficient, phytoplankton, at 580 nmaph5801/mBracher, Astrid
124Absorption coefficient, phytoplankton, at 582 nmaph5821/mBracher, Astrid
125Absorption coefficient, phytoplankton, at 584 nmaph5841/mBracher, Astrid
126Absorption coefficient, phytoplankton, at 586 nmaph5861/mBracher, Astrid
127Absorption coefficient, phytoplankton, at 588 nmaph5881/mBracher, Astrid
128Absorption coefficient, phytoplankton, at 590 nmaph5901/mBracher, Astrid
129Absorption coefficient, phytoplankton, at 592 nmaph5921/mBracher, Astrid
130Absorption coefficient, phytoplankton, at 594 nmaph5941/mBracher, Astrid
131Absorption coefficient, phytoplankton, at 596 nmaph5961/mBracher, Astrid
132Absorption coefficient, phytoplankton, at 598 nmaph5981/mBracher, Astrid
133Absorption coefficient, phytoplankton, at 600 nmaph6001/mBracher, Astrid
134Absorption coefficient, phytoplankton, at 602 nmaph6021/mBracher, Astrid
135Absorption coefficient, phytoplankton, at 604 nmaph6041/mBracher, Astrid
136Absorption coefficient, phytoplankton, at 606 nmaph6061/mBracher, Astrid
137Absorption coefficient, phytoplankton, at 608 nmaph6081/mBracher, Astrid
138Absorption coefficient, phytoplankton, at 610 nmaph6101/mBracher, Astrid
139Absorption coefficient, phytoplankton, at 612 nmaph6121/mBracher, Astrid
140Absorption coefficient, phytoplankton, at 614 nmaph6141/mBracher, Astrid
141Absorption coefficient, phytoplankton, at 616 nmaph6161/mBracher, Astrid
142Absorption coefficient, phytoplankton, at 618 nmaph6181/mBracher, Astrid
143Absorption coefficient, phytoplankton, at 620 nmaph6201/mBracher, Astrid
144Absorption coefficient, phytoplankton, at 622 nmaph6221/mBracher, Astrid
145Absorption coefficient, phytoplankton, at 624 nmaph6241/mBracher, Astrid
146Absorption coefficient, phytoplankton, at 626 nmaph6261/mBracher, Astrid
147Absorption coefficient, phytoplankton, at 628 nmaph6281/mBracher, Astrid
148Absorption coefficient, phytoplankton, at 630 nmaph6301/mBracher, Astrid
149Absorption coefficient, phytoplankton, at 632 nmaph6321/mBracher, Astrid
150Absorption coefficient, phytoplankton, at 634 nmaph6341/mBracher, Astrid
151Absorption coefficient, phytoplankton, at 636 nmaph6361/mBracher, Astrid
152Absorption coefficient, phytoplankton, at 638 nmaph6381/mBracher, Astrid
153Absorption coefficient, phytoplankton, at 640 nmaph6401/mBracher, Astrid
154Absorption coefficient, phytoplankton, at 642 nmaph6421/mBracher, Astrid
155Absorption coefficient, phytoplankton, at 644 nmaph6441/mBracher, Astrid
156Absorption coefficient, phytoplankton, at 646 nmaph6461/mBracher, Astrid
157Absorption coefficient, phytoplankton, at 648 nmaph6481/mBracher, Astrid
158Absorption coefficient, phytoplankton, at 650 nmaph6501/mBracher, Astrid
159Absorption coefficient, phytoplankton, at 652 nmaph6521/mBracher, Astrid
160Absorption coefficient, phytoplankton, at 654 nmaph6541/mBracher, Astrid
161Absorption coefficient, phytoplankton, at 656 nmaph6561/mBracher, Astrid
162Absorption coefficient, phytoplankton, at 658 nmaph6581/mBracher, Astrid
163Absorption coefficient, phytoplankton, at 660 nmaph6601/mBracher, Astrid
164Absorption coefficient, phytoplankton, at 662 nmaph6621/mBracher, Astrid
165Absorption coefficient, phytoplankton, at 664 nmaph6641/mBracher, Astrid
166Absorption coefficient, phytoplankton, at 666 nmaph6661/mBracher, Astrid
167Absorption coefficient, phytoplankton, at 668 nmaph6681/mBracher, Astrid
168Absorption coefficient, phytoplankton, at 670 nmaph6701/mBracher, Astrid
169Absorption coefficient, phytoplankton, at 672 nmaph6721/mBracher, Astrid
170Absorption coefficient, phytoplankton, at 674 nmaph6741/mBracher, Astrid
171Absorption coefficient, phytoplankton, at 676 nmaph6761/mBracher, Astrid
172Absorption coefficient, phytoplankton, at 678 nmaph6781/mBracher, Astrid
173Absorption coefficient, phytoplankton, at 680 nmaph6801/mBracher, Astrid
174Absorption coefficient, phytoplankton, at 682 nmaph6821/mBracher, Astrid
175Absorption coefficient, phytoplankton, at 684 nmaph6841/mBracher, Astrid
176Absorption coefficient, phytoplankton, at 686 nmaph6861/mBracher, Astrid
177Absorption coefficient, phytoplankton, at 688 nmaph6881/mBracher, Astrid
178Absorption coefficient, phytoplankton, at 690 nmaph6901/mBracher, Astrid
179Absorption coefficient, phytoplankton, at 692 nmaph6921/mBracher, Astrid
180Absorption coefficient, phytoplankton, at 694 nmaph6941/mBracher, Astrid
181Absorption coefficient, phytoplankton, at 696 nmaph6961/mBracher, Astrid
182Absorption coefficient, phytoplankton, at 698 nmaph6981/mBracher, Astrid
183Absorption coefficient, phytoplankton, at 700 nmaph7001/mBracher, Astrid
184Absorption coefficient, phytoplankton, at 702 nmaph7021/mBracher, Astrid
185Absorption coefficient, phytoplankton, at 704 nmaph7041/mBracher, Astrid
186Absorption coefficient, phytoplankton, at 706 nmaph7061/mBracher, Astrid
187Absorption coefficient, phytoplankton, at 708 nmaph7081/mBracher, Astrid
188Absorption coefficient, phytoplankton, at 710 nmaph7101/mBracher, Astrid
189Absorption coefficient, phytoplankton, at 712 nmaph7121/mBracher, Astrid
190Absorption coefficient, phytoplankton, at 714 nmaph7141/mBracher, Astrid
191Absorption coefficient, phytoplankton, at 716 nmaph7161/mBracher, Astrid
192Absorption coefficient, phytoplankton, at 718 nmaph7181/mBracher, Astrid
193Absorption coefficient, phytoplankton, at 720 nmaph7201/mBracher, Astrid
194Absorption coefficient, phytoplankton, at 722 nmaph7221/mBracher, Astrid
195Absorption coefficient, phytoplankton, at 724 nmaph7241/mBracher, Astrid
196Absorption coefficient, phytoplankton, at 726 nmaph7261/mBracher, Astrid
197Absorption coefficient, phytoplankton, at 728 nmaph7281/mBracher, Astrid
198