Summer albedo variations in the Arctic Sea ice region from 1982 to 2015

Peng, Hai‐Tao; Ke, Chang‐Qing; Shen, Xueqin; Li, Mengmeng; Shao, Zhude

doi:10.1002/joc.6379

Cited by 14 publications

(5 citation statements)

References 49 publications

(55 reference statements)

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“…In the Arctic Ocean, an increase in sea surface temperature and decrease in sea ice cover are progressing (Praetorius et al 2018; Peng et al 2020). These climate change is associated with the shift of eukaryotic community structure as well as the increase of biomass and the potential loss of biodiversity in the past decade (Li et al 2009; Arrigo and van Dijken 2015), although another study suggests a decreasing tendency on biomass (Hill et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Tight association between microbial eukaryote and giant virus communities in the Arctic Ocean

Xia

Kameyama

Prodinger

et al. 2022

Limnology & Oceanography

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Viruses are important regulatory factors of the marine microbial community including microeukaryotes. However, little is known about their role in the northern Chukchi Sea in the Arctic basin, which has oligotrophic conditions in summer. To clarify the link between microbial eukaryotic communities and viruses as well as environmental conditions, we investigated the community structures of microeukaryotes (from 3 to144 μm and from 0.23 μm size bio‐particles collected from seawater) and Imitervirales (from 0.23 μm size bio‐particles collected from seawater), a dominant group of viruses infecting marine microeukaryotes. To the best of our knowledge, no study has investigated both Imitervirales and eukaryotic communities in the Arctic Ocean. Surface water samples were collected at 21 ocean stations located in the northeastern Chukchi Sea and an adjacent area outside the Beaufort Gyre (Adjacent Sea), and at two melt ponds on sea ice in the summer of 2018. At the ocean stations, nutrient concentrations were low in most of the locations, except the shelf in the adjacent sea. The community variations were significantly correlated between eukaryotes and Imitervirales, even within the northeastern Chukchi Sea characterized by relatively homogeneous environmental conditions. The association of the eukaryotic community with the viral community was stronger than that with geographical and physicochemical environmental factors. These results suggest that Imitervirales actively infect their hosts even in the cold and oligotrophic seawater in the Arctic Ocean.

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Section: Discussionmentioning

confidence: 99%

Tight association between microbial eukaryote and giant virus communities in the Arctic Ocean

Xia

Kameyama

Prodinger

et al. 2022

Limnology & Oceanography

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“…CLARA-A2-SAL was retrieved by AVHRR radiance data and cloud mask. The relative accuracy of the data was 3-15% in sea ice and snow areas [38]. The sea ice albedo from 1982-2018 was used to analyze the change of Arctic sea ice albedo during the past several decades.…”

Section: Sea Ice Albedomentioning

confidence: 99%

The Roles of Sea Ice Export, Atmospheric and Oceanic Factors in the Seasonal and Regional Variability of Arctic Sea Ice during 1979–2020

Cheng

et al. 2022

Remote Sensing

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The seasonal and regional variability of Arctic sea ice area (SIA) and thickness (SIT) were investigated between 1979 and 2020 for the Atlantic sector (AS), Pacific sector (PS) and Barents–Kara Seas (BKSs). We applied the SIA data from remote sensing observations and SIT data from numerical model calculations. We found the large summer variability of SIA and SIT in AS and PS compared with those in winter. The opposite feature was seen in the BKSs. The annual declining rates of SIA and SIT were the largest in PS (−1.73 × 104 km2 yr−1) and AS (−3.36 × 10−2 m yr−1), respectively. The SIA variability was modest for winter PS and the northern Canadian Arctic Archipelago of AS. The annual and winter SIA flux from PS to AS gradually increased in 1979–2020; the summer SIA flux accounted for 11% of the PS summer SIA decline. The annual and seasonal SIA outflow through the Fram Strait during 1979–2020 steadily increased while for annual and winter SIA export, the increase mainly occurred in 1979–2000; the summer SIA outflow was only 1.45% equivalent to the decrease in the entire Arctic summer SIA. We concluded that sea ice export was not a major impact factor on the seasonal and regional decline of SIA and SIT except for the individual years. The near surface air temperature (SAT) and sea surface temperature (SST) were responsible for the retreat and thinning of the sea ice. The dramatic increase in SAT in winter resulted in a strong decrease in winter sea ice in BKS. The outgoing longwave radiation had significant negative correlations with SIA and SIT and positive correlations with SAT and SST. The Atlantic multi-decadal oscillation, related to the North Atlantic Ocean’s SST anomalies, had significant negative correlations with SIA and SIT. The SIT had higher correlations with the atmospheric and oceanic factors compared with SIA, which indicates that SIT is important for predictions of Arctic sea ice and climate change.

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“…In the Arctic Ocean, an increase in sea surface temperature and decrease in sea ice cover are progressing (Peng et al, 2020;Praetorius et al, 2018). These climate change has been shown to be associated with the shift of eukaryotic community structure as well as the increase of biomass and the potential loss of biodiversity in the past decade (Arrigo & van Dijken, 2015;Li et al, 2009;Majaneva et al, 2012), although another study suggests a decreasing tendency on biomass (Hill et al, 2013).…”

Section: Tight Association Between Imitervirales and The Microbial Eukaryotic Communitymentioning

confidence: 99%

Tight association between microbial eukaryote andImiterviralescommunities in the Pacific Arctic Ocean

Xia

Kameyama

Prodinger

et al. 2021

Preprint

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Viruses are important regulatory factors of marine microbial community including microeukaryotes. However, little is known about their role in the northern Chukchi Sea of the Arctic basin, which remains oligotrophic conditions in summer. To elucidate linkages of microbial eukaryotic community with viruses as well as environmental variables, we investigated the community structures of microeukaryotes (3-144 μm and 0.2-3 μm size fractions) and Imitervirales (0.2-3 μm size fraction), a major group of viruses infecting marine microeukaryotes. Surface water samples were collected at 21 ocean stations located in the northeastern Chukchi Sea (NECS), an adjacent area outside the Beaufort Gyre (Adjacent Sea; AS), and two melt ponds on sea ice in the summer of 2018. At the ocean stations, nutrient concentrations were low in most of the locations expect at the shelf in the AS. The community variations were significantly correlated between eukaryotes and Imitervirales, even within the NECS characterized by relatively homogeneous environmental conditions. The association of the eukaryotic community with the viral community was stronger than that with geographical and physicochemical environmental factors. These results suggest that Imitervirales are actively infecting their hosts even in cold and oligotrophic sea water in the Arctic Ocean.

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Summer albedo variations in the Arctic Sea ice region from 1982 to 2015

Cited by 14 publications

References 49 publications

Tight association between microbial eukaryote and giant virus communities in the Arctic Ocean

Tight association between microbial eukaryote and giant virus communities in the Arctic Ocean

The Roles of Sea Ice Export, Atmospheric and Oceanic Factors in the Seasonal and Regional Variability of Arctic Sea Ice during 1979–2020

Tight association between microbial eukaryote andImiterviralescommunities in the Pacific Arctic Ocean

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