Absorption coefficients of particulate matter and chlorophyll a concentrations at time series station OLIPAC

Autoria(s): Bricaud, Annick; Morel, André; Babin, Marcel; Allali, Karima; Claustre, Hervé
Cobertura

MEDIAN LATITUDE: -4.169463 * MEDIAN LONGITUDE: -149.991761 * SOUTH-BOUND LATITUDE: -11.530333 * WEST-BOUND LONGITUDE: -150.074000 * NORTH-BOUND LATITUDE: 1.041000 * EAST-BOUND LONGITUDE: -149.936833 * DATE/TIME START: 1994-11-07T10:10:00 * DATE/TIME END: 1994-11-16T16:45:00
Data(s)

08/06/1998
Resumo

Spectral absorption coefficients of total particulate matter ap (lambda) were determined using the in vitro filter technique. The present analysis deals with a set of 1166 spectra, determined in various oceanic (case 1) waters, with field chl a concentrations ([chl]) spanning 3 orders of magnitude (0.02-25 mg/m**3). As previously shown [Bricaud et al., 1995, doi:10.1029/95JC00463] for the absorption coefficients of living phytoplankton a phi (lamda), the ap (labda) coefficients also increase nonlinearly with [chl]. The relationships (power laws) that link ap (lambda) and a phi (lambda) to [chl] show striking similarities. Despite large fluctuations, the relative contribution of nonalgal particles to total absorption oscillates around an average value of 25-30% throughout the [chl] range. The spectral dependence of absorption by these nonalgal particles follows an exponential increase toward short wavelengths, with a weakly variable slope (0.011 ± 0.0025/nm). The empirical relationships linking ap (lambda) to ([chl]) can be used in bio-optical models. This parameterization based on in vitro measurements leads to a good agreement with a former modeling of the diffuse attenuation coefficient based on in situ measurements. This agreement is worth noting as independent methods and data sets are compared. It is stressed that for a given ([chl]), the ap (lambda) coefficients show large residual variability around the regression lines (for instance, by a factor of 3 at 440 nm). The consequences of such a variability, when predicting or interpreting the diffuse reflectance of the ocean, are examined, according to whether or not these variations in ap are associated with concomitant variations in particle scattering. In most situations the deviations in ap actually are not compensated by those in particle scattering, so that the amplitude of reflectance is affected by these variations.
Formato

application/zip, 3 datasets
Identificador

https://doi.pangaea.de/10.1594/PANGAEA.739879

doi:10.1594/PANGAEA.739879
Idioma(s)

en
Publicador

PANGAEA
Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted
Fonte

Supplement to: Bricaud, Annick; Morel, André; Babin, Marcel; Allali, Karima; Claustre, Hervé (1998): Variations of light absorption by suspended particles with chlorophyll a concentration in oceanic (case 1) waters: Analysis and implications for bio-optical models. Journal of Geophysical Research-Oceans, 103(C13), 31033-31044, doi:10.1029/98JC02712
Palavras-Chave #Absorption coefficient, 400 nm; Absorption coefficient, 402 nm; Absorption coefficient, 404 nm; Absorption coefficient, 406 nm; Absorption coefficient, 408 nm; Absorption coefficient, 410 nm; Absorption coefficient, 412 nm; Absorption coefficient, 414 nm; Absorption coefficient, 416 nm; Absorption coefficient, 418 nm; Absorption coefficient, 420 nm; Absorption coefficient, 422 nm; Absorption coefficient, 424 nm; Absorption coefficient, 426 nm; Absorption coefficient, 428 nm; Absorption coefficient, 430 nm; Absorption coefficient, 432 nm; Absorption coefficient, 434 nm; Absorption coefficient, 436 nm; Absorption coefficient, 438 nm; Absorption coefficient, 440 nm; Absorption coefficient, 442 nm; Absorption coefficient, 444 nm; Absorption coefficient, 446 nm; Absorption coefficient, 448 nm; Absorption coefficient, 450 nm; Absorption coefficient, 452 nm; Absorption coefficient, 454 nm; Absorption coefficient, 456 nm; Absorption coefficient, 458 nm; Absorption coefficient, 460 nm; Absorption coefficient, 462 nm; Absorption coefficient, 464 nm; Absorption coefficient, 466 nm; Absorption coefficient, 468 nm; Absorption coefficient, 470 nm; Absorption coefficient, 472 nm; Absorption coefficient, 474 nm; Absorption coefficient, 476 nm; Absorption coefficient, 478 nm; Absorption coefficient, 480 nm; Absorption coefficient, 482 nm; Absorption coefficient, 484 nm; Absorption coefficient, 486 nm; Absorption coefficient, 488 nm; Absorption coefficient, 490 nm; Absorption coefficient, 492 nm; Absorption coefficient, 494 nm; Absorption coefficient, 496 nm; Absorption coefficient, 498 nm; Absorption coefficient, 500 nm; Absorption coefficient, 502 nm; Absorption coefficient, 504 nm; Absorption coefficient, 506 nm; Absorption coefficient, 508 nm; Absorption coefficient, 510 nm; Absorption coefficient, 512 nm; Absorption coefficient, 514 nm; Absorption coefficient, 516 nm; Absorption coefficient, 518 nm; Absorption coefficient, 520 nm; Absorption coefficient, 522 nm; Absorption coefficient, 524 nm; Absorption coefficient, 526 nm; Absorption coefficient, 528 nm; Absorption coefficient, 530 nm; Absorption coefficient, 532 nm; Absorption coefficient, 534 nm; Absorption coefficient, 536 nm; Absorption coefficient, 538 nm; Absorption coefficient, 540 nm; Absorption coefficient, 542 nm; Absorption coefficient, 544 nm; Absorption coefficient, 546 nm; Absorption coefficient, 548 nm; Absorption coefficient, 550 nm; Absorption coefficient, 552 nm; Absorption coefficient, 554 nm; Absorption coefficient, 556 nm; Absorption coefficient, 558 nm; Absorption coefficient, 560 nm; Absorption coefficient, 562 nm; Absorption coefficient, 564 nm; Absorption coefficient, 566 nm; Absorption coefficient, 568 nm; Absorption coefficient, 570 nm; Absorption coefficient, 572 nm; Absorption coefficient, 574 nm; Absorption coefficient, 576 nm; Absorption coefficient, 578 nm; Absorption coefficient, 580 nm; Absorption coefficient, 582 nm; Absorption coefficient, 584 nm; Absorption coefficient, 586 nm; Absorption coefficient, 588 nm; Absorption coefficient, 590 nm; Absorption coefficient, 592 nm; Absorption coefficient, 594 nm; Absorption coefficient, 596 nm; Absorption coefficient, 598 nm; Absorption coefficient, 600 nm; Absorption coefficient, 602 nm; Absorption coefficient, 604 nm; Absorption coefficient, 606 nm; Absorption coefficient, 608 nm; Absorption coefficient, 610 nm; Absorption coefficient, 612 nm; Absorption coefficient, 614 nm; Absorption coefficient, 616 nm; Absorption coefficient, 618 nm; Absorption coefficient, 620 nm; Absorption coefficient, 622 nm; Absorption coefficient, 624 nm; Absorption coefficient, 626 nm; Absorption coefficient, 628 nm; Absorption coefficient, 630 nm; Absorption coefficient, 632 nm; Absorption coefficient, 634 nm; Absorption coefficient, 636 nm; Absorption coefficient, 638 nm; Absorption coefficient, 640 nm; Absorption coefficient, 642 nm; Absorption coefficient, 644 nm; Absorption coefficient, 646 nm; Absorption coefficient, 648 nm; Absorption coefficient, 650 nm; Absorption coefficient, 652 nm; Absorption coefficient, 654 nm; Absorption coefficient, 656 nm; Absorption coefficient, 658 nm; Absorption coefficient, 660 nm; Absorption coefficient, 662 nm; Absorption coefficient, 664 nm; Absorption coefficient, 666 nm; Absorption coefficient, 668 nm; Absorption coefficient, 670 nm; Absorption coefficient, 672 nm; Absorption coefficient, 674 nm; Absorption coefficient, 676 nm; Absorption coefficient, 678 nm; Absorption coefficient, 680 nm; Absorption coefficient, 682 nm; Absorption coefficient, 684 nm; Absorption coefficient, 686 nm; Absorption coefficient, 688 nm; Absorption coefficient, 690 nm; Absorption coefficient, 692 nm; Absorption coefficient, 694 nm; Absorption coefficient, 696 nm; Absorption coefficient, 698 nm; Absorption coefficient, 700 nm; ac400; ac402; ac404; ac406; ac408; ac410; ac412; ac414; ac416; ac418; ac420; ac422; ac424; ac426; ac428; ac430; ac432; ac434; ac436; ac438; ac440; ac442; ac444; ac446; ac448; ac450; ac452; ac454; ac456; ac458; ac460; ac462; ac464; ac466; ac468; ac470; ac472; ac474; ac476; ac478; ac480; ac482; ac484; ac486; ac488; ac490; ac492; ac494; ac496; ac498; ac500; ac502; ac504; ac506; ac508; ac510; ac512; ac514; ac516; ac518; ac520; ac522; ac524; ac526; ac528; ac530; ac532; ac534; ac536; ac538; ac540; ac542; ac544; ac546; ac548; ac550; ac552; ac554; ac556; ac558; ac560; ac562; ac564; ac566; ac568; ac570; ac572; ac574; ac576; ac578; ac580; ac582; ac584; ac586; ac588; ac590; ac592; ac594; ac596; ac598; ac600; ac602; ac604; ac606; ac608; ac610; ac612; ac614; ac616; ac618; ac620; ac622; ac624; ac626; ac628; ac630; ac632; ac634; ac636; ac638; ac640; ac642; ac644; ac646; ac648; ac650; ac652; ac654; ac656; ac658; ac660; ac662; ac664; ac666; ac668; ac670; ac672; ac674; ac676; ac678; ac680; ac682; ac684; ac686; ac688; ac690; ac692; ac694; ac696; ac698; ac700; Biogeochemical Processes in the Oceans and Fluxes; Chl a; Chlorophyll a; CTD/Rosette; CTD-RO; DEPTH, water; Depth water; Divinyl chlorophyll a; DV chl a; Event; JGOFS; Joint Global Ocean Flux Study; L Atalante; OLIPAC; OLIPAC_011; OLIPAC_012; OLIPAC_016; OLIPAC_021; OLIPAC_022; OLIPAC_026; OLIPAC_027; OLIPAC_031; OLIPAC_032; OLIPAC_036; OLIPAC_037; OLIPAC_041; OLIPAC_042; OLIPAC_046; OLIPAC_047; OLIPAC_051; OLIPAC_052; OLIPAC_056; OLIPAC_057; PROOF
Tipo

Dataset
Acesso ao item digital