Atmospheric HCH Concentrations over the Marine Boundary Layer from Shanghai, China to the Arctic Ocean: Role of Human Activity and Climate Change

2010 ◽  
Vol 44 (22) ◽  
pp. 8422-8428 ◽  
Author(s):  
Xiaoguo Wu ◽  
James C. W. Lam ◽  
Chonghuan Xia ◽  
Hui Kang ◽  
Liguang Sun ◽  
...  
Keyword(s):  
Climate Change ◽  
Boundary Layer ◽  
Arctic Ocean ◽  
Human Activity ◽  
Marine Boundary Layer ◽  
The Arctic ◽  
The Arctic Ocean

scholarly journals Summertime aerosol chemical components in the marine boundary layer of the Arctic Ocean

2006 ◽  
Vol 111 (D10) ◽  
pp. n/a-n/a ◽  
Author(s):  
Zhouqing Xie ◽  
Liguang Sun ◽  
Joel D. Blum ◽  
Yuying Huang ◽  
Wei He
Keyword(s):  
Boundary Layer ◽  
Arctic Ocean ◽  
Marine Boundary Layer ◽  
The Arctic ◽  
Chemical Components ◽  
The Arctic Ocean

scholarly journals Summertime carbonaceous aerosols collected in the marine boundary layer of the Arctic Ocean

2007 ◽  
Vol 112 (D2) ◽  
Author(s):  
Zhouqing Xie ◽  
Joel D. Blum ◽  
Satoshi Utsunomiya ◽  
R. C. Ewing ◽  
Xinming Wang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Arctic Ocean ◽  
Marine Boundary Layer ◽  
The Arctic ◽  
Carbonaceous Aerosols ◽  
The Arctic Ocean

Observation of surface ozone in the marine boundary layer along a cruise through the Arctic Ocean: From offshore to remote

2016 ◽  
Vol 169 ◽  
pp. 191-198 ◽  
Author(s):  
Pengzhen He ◽  
Lingen Bian ◽  
Xiangdong Zheng ◽  
Juan Yu ◽  
Chen Sun ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Arctic Ocean ◽  
Marine Boundary Layer ◽  
Surface Ozone ◽  
The Arctic ◽  
The Arctic Ocean

scholarly journals Regional variability of acidification in the Arctic: a sea of contrasts

2014 ◽  
Vol 11 (2) ◽  
pp. 293-308 ◽  
Author(s):  
E. E. Popova ◽  
A. Yool ◽  
Y. Aksenov ◽  
A. C. Coward ◽  
T. R. Anderson
Keyword(s):  
Climate Change ◽  
Primary Production ◽  
Arctic Ocean ◽  
Canadian Arctic ◽  
Atmospheric Co2 ◽  
The Arctic ◽  
Canadian Arctic Archipelago ◽  
Regional Variability ◽  
The Arctic Ocean ◽  
The Impact

Abstract. The Arctic Ocean is a region that is particularly vulnerable to the impact of ocean acidification driven by rising atmospheric CO2, with potentially negative consequences for calcifying organisms such as coccolithophorids and foraminiferans. In this study, we use an ocean-only general circulation model, with embedded biogeochemistry and a comprehensive description of the ocean carbon cycle, to study the response of pH and saturation states of calcite and aragonite to rising atmospheric pCO2 and changing climate in the Arctic Ocean. Particular attention is paid to the strong regional variability within the Arctic, and, for comparison, simulation results are contrasted with those for the global ocean. Simulations were run to year 2099 using the RCP8.5 (an Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) scenario with the highest concentrations of atmospheric CO2). The separate impacts of the direct increase in atmospheric CO2 and indirect effects via impact of climate change (changing temperature, stratification, primary production and freshwater fluxes) were examined by undertaking two simulations, one with the full system and the other in which atmospheric CO2 was prevented from increasing beyond its preindustrial level (year 1860). Results indicate that the impact of climate change, and spatial heterogeneity thereof, plays a strong role in the declines in pH and carbonate saturation (Ω) seen in the Arctic. The central Arctic, Canadian Arctic Archipelago and Baffin Bay show greatest rates of acidification and Ω decline as a result of melting sea ice. In contrast, areas affected by Atlantic inflow including the Greenland Sea and outer shelves of the Barents, Kara and Laptev seas, had minimal decreases in pH and Ω because diminishing ice cover led to greater vertical mixing and primary production. As a consequence, the projected onset of undersaturation in respect to aragonite is highly variable regionally within the Arctic, occurring during the decade of 2000–2010 in the Siberian shelves and Canadian Arctic Archipelago, but as late as the 2080s in the Barents and Norwegian seas. We conclude that, for future projections of acidification and carbonate saturation state in the Arctic, regional variability is significant and needs to be adequately resolved, with particular emphasis on reliable projections of the rates of retreat of the sea ice, which are a major source of uncertainty.

Exploring the Role of Shelf Sediments in the Arctic Ocean in Determining the Arctic Contamination Potential of Neutral Organic Contaminants

2012 ◽  
Vol 47 (2) ◽  
pp. 923-931 ◽  
Author(s):  
James M. Armitage ◽  
Sung-Deuk Choi ◽  
Torsten Meyer ◽  
Trevor N. Brown ◽  
Frank Wania
Keyword(s):  
Arctic Ocean ◽  
Organic Contaminants ◽  
The Arctic ◽  
The Arctic Ocean ◽  
Shelf Sediments

scholarly journals Ozone in the Boundary Layer air over the Arctic Ocean – measurements during the TARA expedition

2009 ◽  
Vol 9 (2) ◽  
pp. 8561-8586
Author(s):  
J. W. Bottenheim ◽  
S. Netcheva ◽  
S. Morin ◽  
S. V. Nghiem
Keyword(s):  
Boundary Layer ◽  
Arctic Ocean ◽  
Ozone Depletion ◽  
Surface Ozone ◽  
The Arctic ◽  
Total Absence ◽  
Trajectory Calculations ◽  
The Arctic Ocean ◽  
Ocean Measurements ◽  
Siberian Coast

Abstract. A full year of measurements of surface ozone over the Arctic Ocean far removed from land is presented (81° N – 88° N latitude). The data were obtained during the drift of the French schooner TARA between September 2006 and January 2008, while frozen in the Arctic Ocean. The data confirm that long periods of virtually total absence of ozone occur in the spring (mid March to mid June) after Polar sunrise. At other times of the year ozone concentrations are comparable to other oceanic observations with winter mole fractions of ca. 30–40 nmol mol−1 and summer minima of ca. 20 nmol mol−1. Contrary to earlier observations from ozone sonde data obtained at Arctic coastal observatories, the ambient temperature was well above −20°C during most ODEs (ozone depletion episodes). Backwards trajectory calculations suggest that during these ODEs the air had previously been in contact with the frozen ocean surface for several days and originated largely from the Siberian coast where several large open flaw leads developed in the spring of 2007.

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