The Pacific Arctic Region: An Introduction

2014 ◽  
pp. 1-15 ◽  
Author(s):  
Jacqueline M. Grebmeier ◽  
Wieslaw Maslowski
Keyword(s):  
Arctic Region ◽  
The Pacific

scholarly journals Record high Pacific Arctic seawater temperatures and delayed sea ice advance in response to episodic atmospheric blocking

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tsubasa Kodaira ◽  
Takuji Waseda ◽  
Takehiko Nose ◽  
Jun Inoue
Keyword(s):  
Sea Ice ◽  
Arctic Region ◽  
Arctic Sea Ice ◽  
Sea Surface ◽  
The Arctic ◽  
Atmospheric Blocking ◽  
Sea Ice Extent ◽  
The Pacific ◽  
Arctic Sea ◽  
Highly Correlated

AbstractArctic sea ice is rapidly decreasing during the recent period of global warming. One of the significant factors of the Arctic sea ice loss is oceanic heat transport from lower latitudes. For months of sea ice formation, the variations in the sea surface temperature over the Pacific Arctic region were highly correlated with the Pacific Decadal Oscillation (PDO). However, the seasonal sea surface temperatures recorded their highest values in autumn 2018 when the PDO index was neutral. It is shown that the anomalous warm seawater was a rapid ocean response to the southerly winds associated with episodic atmospheric blocking over the Bering Sea in September 2018. This warm seawater was directly observed by the R/V Mirai Arctic Expedition in November 2018 to significantly delay the southward sea ice advance. If the atmospheric blocking forms during the PDO positive phase in the future, the annual maximum Arctic sea ice extent could be dramatically reduced.

Recent Variability in Sea Ice Cover, Age, and Thickness in the Pacific Arctic Region

2014 ◽  
pp. 31-63 ◽  
Author(s):  
Karen E. Frey ◽  
James A. Maslanik ◽  
Jaclyn Clement Kinney ◽  
Wieslaw Maslowski
Keyword(s):  
Sea Ice ◽  
Arctic Region ◽  
Ice Cover ◽  
The Pacific

scholarly journals Phylogeography and connectivity of thePseudocalanus(Copepoda: Calanoida) species complex in the eastern North Pacific and the Pacific Arctic Region

2016 ◽  
Vol 38 (3) ◽  
pp. 610-623 ◽  
Author(s):  
Jennifer Marie Questel ◽  
Leocadio Blanco-Bercial ◽  
Russell R. Hopcroft ◽  
Ann Bucklin
Keyword(s):  
North Pacific ◽  
Species Complex ◽  
Arctic Region ◽  
The Pacific

scholarly journals Sipunculan fauna in the Pacific Arctic region: a significant component of benthic infaunal communities

Polar Biology ◽  
2017 ◽  
Vol 41 (1) ◽  
pp. 163-174 ◽  
Author(s):  
Monika Kędra ◽  
Jacqueline M. Grebmeier ◽  
Lee W. Cooper
Keyword(s):  
Arctic Region ◽  
Significant Component ◽  
The Pacific

scholarly journals Impact of a warm anomaly in the Pacific Arctic region derived from time-series export fluxes

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255837
Author(s):  
Catherine Lalande ◽  
Jacqueline M. Grebmeier ◽  
Andrew M. P. McDonnell ◽  
Russell R. Hopcroft ◽  
Stephanie O’Daly ◽  
...  
Keyword(s):  
Sea Ice ◽  
Bering Sea ◽  
Chukchi Sea ◽  
Arctic Region ◽  
Ice Cover ◽  
Biological Pump ◽  
Northern Bering Sea ◽  
Pacific Waters ◽  
The Pacific ◽  
The Impact

Unusually warm conditions recently observed in the Pacific Arctic region included a dramatic loss of sea ice cover and an enhanced inflow of warmer Pacific-derived waters. Moored sediment traps deployed at three biological hotspots of the Distributed Biological Observatory (DBO) during this anomalously warm period collected sinking particles nearly continuously from June 2017 to July 2019 in the northern Bering Sea (DBO2) and in the southern Chukchi Sea (DBO3), and from August 2018 to July 2019 in the northern Chukchi Sea (DBO4). Fluxes of living algal cells, chlorophyll a (chl a), total particulate matter (TPM), particulate organic carbon (POC), and zooplankton fecal pellets, along with zooplankton and meroplankton collected in the traps, were used to evaluate spatial and temporal variations in the development and composition of the phytoplankton and zooplankton communities in relation to sea ice cover and water temperature. The unprecedented sea ice loss of 2018 in the northern Bering Sea led to the export of a large bloom dominated by the exclusively pelagic diatoms Chaetoceros spp. at DBO2. Despite this intense bloom, early sea ice breakup resulted in shorter periods of enhanced chl a and diatom fluxes at all DBO sites, suggesting a weaker biological pump under reduced ice cover in the Pacific Arctic region, while the coincident increase or decrease in TPM and POC fluxes likely reflected variations in resuspension events. Meanwhile, the highest transport of warm Pacific waters during 2017–2018 led to a dominance of the small copepods Pseudocalanus at all sites. Whereas the export of ice-associated diatoms during 2019 suggested a return to more typical conditions in the northern Bering Sea, the impact on copepods persisted under the continuously enhanced transport of warm Pacific waters. Regardless, the biological pump remained strong on the shallow Pacific Arctic shelves.

scholarly journals Influence of the Trunk Infrastructure of the Northern Sea Way on the Functioning of the Far Eastern Sector of the Russian Arctic Zon

2020 ◽  
Vol 7 (2) ◽  
pp. 72-82
Author(s):  
Boris Krasnopolski ◽  
Keyword(s):  
Economic Development ◽  
Arctic Region ◽  
Russian Arctic ◽  
Bering Strait ◽  
Northern Sea Route ◽  
The Pacific ◽  
Socio Economic Development ◽  
The Government ◽  
Far Eastern ◽  
The Relationship

The article describes the relationship between the methods of formation and development of the transport and logistics trunk infrastructure of the Northern Sea Route (NSR) in the context of the government plan for the development of the NSR infrastructure until 2035 and the implementation of national projects in Russia. The national and international problems of the socio-economic development of the Bering Strait region and the Pacific Arctic are analyzed. It also substantiates and proposes the creation of the Council of the Bering / Pacific-Arctic Region (RBTR)

A decade of environmental change in the Pacific Arctic region

2015 ◽  
Vol 136 ◽  
pp. 12-31 ◽  
Author(s):  
Kevin R. Wood ◽  
Nicholas A. Bond ◽  
Seth L. Danielson ◽  
James E. Overland ◽  
Sigrid A. Salo ◽  
...  
Keyword(s):  
Environmental Change ◽  
Arctic Region ◽  
The Pacific

Biodiversity and Biogeography of the Lower Trophic Taxa of the Pacific Arctic Region: Sensitivities to Climate Change

2014 ◽  
pp. 269-336 ◽  
Author(s):  
R. John Nelson ◽  
Carin J. Ashjian ◽  
Bodil A. Bluhm ◽  
Kathleen E. Conlan ◽  
Rolf R. Gradinger ◽  
...  
Keyword(s):  
Climate Change ◽  
Arctic Region ◽  
The Pacific

scholarly journals Assessment of Empirical and Semi-Analytical Algorithms Using MODIS-Aqua for Representing In-Situ Chromophoric Dissolved Organic Matter (CDOM) in the Bering, Chukchi, and Western Beaufort Seas of the Pacific Arctic Region

2021 ◽  
Vol 13 (18) ◽  
pp. 3673
Author(s):  
Melishia I. Santiago ◽  
Karen E. Frey
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Field Measurements ◽  
Arctic Region ◽  
Chromophoric Dissolved Organic Matter ◽  
Arctic Regions ◽  
The Pacific ◽  
In Situ Conditions ◽  
Latitudinal Transect

We analyzed a variety of satellite-based ocean color products derived using MODIS-Aqua to investigate the most accurate empirical and semi-analytical algorithms for representing in-situ chromophoric dissolved organic matter (CDOM) across a large latitudinal transect in the Bering, Chukchi, and western Beaufort Seas of the Pacific Arctic region. In particular, we compared the performance of empirical (CDOM index) and several semi-analytical algorithms (quasi-analytical algorithm (QAA), Carder, Garver-Siegel-Maritorena (GSM), and GSM-A) with field measurements of CDOM absorption (aCDOM) at 412 nanometers (nm) and 443 nm. These algorithms were compared with in-situ CDOM measurements collected on cruises during July 2011, 2013, 2014, 2015, 2016, and 2017. Our findings show that the QAA a443 and GSM-A a443 algorithms are the most accurate and robust representation of in-situ conditions, and that the GSM-A a443 algorithm is the most accurate algorithm when considering all statistical metrics utilized here. Our further assessments indicate that geographic variables (distance to coast, latitude, and sampling transects) did not obviously relate to algorithm accuracy. In general, none of the algorithms investigated showed a statistically significant agreement with field measurements beyond an approximately ± 60 h offset, likely owing to the highly variable environmental conditions found across the Pacific Arctic region. As such, we suggest that satellite observations of CDOM in these Arctic regions should not be used to represent in-situ conditions beyond a ± 60 h timeframe.

Sign in / Sign up

Export Citation Format

Share Document