The effect of phytoplankton pigment composition and packaging on the retrieval of chlorophyll-a concentration from satellite observations in the Southern Ocean

Jena, Babula

doi:10.1080/01431161.2017.1308034

Cited by 27 publications

(23 citation statements)

References 52 publications

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“…The data are available at https://www.mbari.org/science/, last access: 21 March 2020; Monterey Bay Aquarium Research Institute-Argo, 2020, http://www.argo.ucsd.edu/, last access: 21 March 2020; Argo, 2020b, http://argo.jcommops.org/, last access: 21 March 2020; Joint Technical Commission for Oceanography and Marine Meteorology in situ Observations Programme Support Centre, 2020. The primary production data used for the validation are available at https://data.mendeley.com/, last access: 21 March 2020, data repository under https://doi.org/10.17632/k438knz9zs.5 (Jena and Anil Kumar, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…gsfc.nasa.gov/atbd/chlor_a/, last access: 21 March 2020). In this study, we have used the criteria of chl a > 0.8 mg m −3 (Fitch and Moore, 2007) for defining a phytoplankton bloom after considering the underestimation tendency of chl a measurement from satellite observations over the Southern Ocean (Jena, 2017).…”

Section: Methodsmentioning

confidence: 99%

“…The model-based NPP values were available on a weekly timescale with a spatial resolution of ∼ 4 km. The pixel values from the models were extracted around each in situ observation of NPP to generate the matchups for the validation strategy, a method adopted by several authors (Jena, 2017;Johnson et al, 2013). The comparative statistical analysis suggested that the scatters were much better in the case of Eppley-VGPM-estimated NPP (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…1c, f). The observed pattern has been attributed to the effect of phytoplankton pigment composition and packaging (Bricaud et al, 2004;Ciotti et al, 2002;Jena, 2017;Lohrenz et al, 2003;Marra et al, 2007;Morel and Bricaud, 1981). The primary production in the upper ocean is a function of chl a, availability of light, nutrients, phytoplanktonspecific absorption coefficient (capacity of light absorption), and efficiency of phytoplankton to convert the absorbed light for carbon fixation (Behrenfeld and Falkowski, 1997a).…”

Section: Causes Of the Observed Bloom Formationmentioning

confidence: 99%

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Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean

Jena

Pillai

2020

The Cryosphere

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Abstract. The appearance of phytoplankton blooms within sea ice cover is of high importance considering the upper ocean primary production that controls the biological pump, with implications for atmospheric CO2 and global climate. Satellite-derived chlorophyll a concentration showed unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean, with chlorophyll a reaching up to 4.67 mg m−3 during 2017. Multi-satellite data indicated that the bloom appeared for the first time since the entire mission records started in 1978. An Argo float located in the polynya edge provided evidence of bloom conditions in austral spring 2017 (chlorophyll a up to 5.47 mg m−3) compared to the preceding years with prevailing low chlorophyll a. The occurrence of bloom was associated with the supply of nutrients into the upper ocean through Ekman upwelling (driven by wind stress curl and cyclonic ocean eddies) and improved light conditions of up to 61.9 einstein m−2 d−1. The net primary production from the Aqua Moderate Resolution Imaging Spectroradiometer chlorophyll-based algorithm showed that the Maud Rise polynya was as productive as the Antarctic coastal polynyas, with carbon fixation rates reaching up to 415.08 mg C m−2 d−1. The study demonstrates how the phytoplankton in the Southern Ocean (specifically over the shallow bathymetric region) would likely respond in the future under warming climate conditions and continued melting of Antarctic sea ice.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Causes Of the Observed Bloom Formationmentioning

confidence: 99%

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Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean

Jena

Pillai

2020

The Cryosphere

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“…We used a standard chl-a retrieving algorithm that uses combination of both lower and higher range of chl-a retrieval as described in the Algorithm Theoretical Basis Document (ATBD) from the NASA Earth Observing System Project Science Office (https://oceancolor.gsfc.nasa.gov/atbd/chlor_a/). In this study, we have used the criteria of chl-a > 0.8 mg m -3 (Fitch and Moore, 2007), for defining a phytoplankton bloom after considering the underestimation tendency of chl-a measurement from satellite observations over the Southern Ocean (Jena, 2017).…”

Section: Methodsmentioning

confidence: 99%

Satellite observations of new phytoplankton blooms in the Maud Rise Polynya, Southern Ocean

Jena

Pillai

2019

Preprint

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Abstract. Appearance of new phytoplankton blooms with in the sea-ice cover has large importance considering the upper ocean primary production that controls the biological pump with the implications for atmospheric CO2 and global climate. Satellite derived chlorophyll-a concentration showed the unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean with chlorophyll-a reached up to 4.67 mg m-3. Multi-satellite data indicated that the bloom appeared for the first time in the entire mission records started since 1978. Argo float located in the polynya edge provided evidence of bloom condition in austral spring 2017 (chlorophyll-a up to 5.47 mg m-3) compared to the preceding years of prevailed low chlorophyll-a. The occurrence of bloom was associated with the supply of nutrients into the upper ocean through the Ekman upwelling (driven by wind stress curl and cyclonic ocean eddies), and improved light condition up to 61.9 Einstein m-2 day-1. The net primary production from Aqua-MODIS chlorophyll-based algorithm showed that the Maud Rise polynya was as productive as the Antarctic coastal polynyas with the carbon fixation rates reached up to 415.08 mg C m-2 day-1. The study demonstrates how the phytoplankton in the Southern Ocean (specifically over the shallow bathymetric region) would likely respond in the future under a warming climate condition and continued melting of Antarctic sea-ice since 2016.

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Iron-Stimulated Phytoplankton Blooms in the Southern Ocean: a Brief Review

Tripathy

Jena

2019

Remote Sens Earth Syst Sci

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The effect of phytoplankton pigment composition and packaging on the retrieval of chlorophyll-a concentration from satellite observations in the Southern Ocean

Cited by 27 publications

References 52 publications

Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean

Satellite observations of unprecedented phytoplankton blooms in the Maud Rise polynya, Southern Ocean

Satellite observations of new phytoplankton blooms in the Maud Rise Polynya, Southern Ocean

Iron-Stimulated Phytoplankton Blooms in the Southern Ocean: a Brief Review

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