scholarly journals Shipborne observations of atmospheric black carbon aerosol particles over the Arctic Ocean, Bering Sea, and North Pacific Ocean during September 2014

2016 ◽  
Vol 121 (4) ◽  
pp. 1914-1921 ◽  
Author(s):  
Fumikazu Taketani ◽  
Takuma Miyakawa ◽  
Hisahiro Takashima ◽  
Yuichi Komazaki ◽  
Xiaole Pan ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Arctic Ocean ◽  
Black Carbon ◽  
Bering Sea ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Aerosol Particles ◽  
The Arctic ◽  
The Arctic Ocean ◽  
Black Carbon Aerosol

scholarly journals Radiocesium in the western subarctic area of the North Pacific ocean, Bering Sea, and Arctic Ocean in 2015 and 2017

Polar Science ◽  
2019 ◽  
Vol 21 ◽  
pp. 228-232 ◽  
Author(s):  
Yuichiro Kumamoto ◽  
Michio Aoyama ◽  
Yasunori Hamajima ◽  
Shigeto Nishino ◽  
Akihiko Murata ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Arctic Ocean ◽  
Bering Sea ◽  
North Pacific ◽  
North Pacific Ocean ◽  
The North ◽  
The North Pacific

Radiocesium in the western subarctic area of the North Pacific Ocean, Bering Sea, and Arctic Ocean in 2013 and 2014

2017 ◽  
Vol 126 ◽  
pp. 88-92 ◽  
Author(s):  
Yuichiro Kumamoto ◽  
Michio Aoyama ◽  
Yasunori Hamajima ◽  
Shigeto Nishino ◽  
Akihiko Murata ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Arctic Ocean ◽  
Bering Sea ◽  
North Pacific ◽  
North Pacific Ocean ◽  
The North ◽  
The North Pacific

scholarly journals Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties

2020 ◽  
Vol 20 (9) ◽  
pp. 5573-5590 ◽  
Author(s):  
Jiyeon Park ◽  
Manuel Dall'Osto ◽  
Kihong Park ◽  
Yeontae Gim ◽  
Hyo Jin Kang ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Arctic Ocean ◽  
Aerosol Particles ◽  
The Arctic ◽  
Marine Aerosol ◽  
Aerosol Formation ◽  
Aerosol Composition ◽  
Air Masses ◽  
The Arctic Ocean ◽  
Marine Air

Abstract. There are few shipborne observations addressing the factors influencing the relationships of the formation and growth of aerosol particles with cloud condensation nuclei (CCN) in remote marine environments. In this study, the physical properties of aerosol particles throughout the Arctic Ocean and Pacific Ocean were measured aboard the Korean icebreaker R/V Araon during the summer of 2017 for 25 d. A number of new particle formation (NPF) events and growth were frequently observed in both Arctic terrestrial and Arctic marine air masses. By striking contrast, NPF events were not detected in Pacific marine air masses. Three major aerosol categories are therefore discussed: (1)  Arctic marine (aerosol number concentration CN2.5: 413±442 cm−3), (2) Arctic terrestrial (CN2.5: 1622±1450 cm−3) and (3) Pacific marine (CN2.5: 397±185 cm−3), following air mass back-trajectory analysis. A major conclusion of this study is not only that the Arctic Ocean is a major source of secondary aerosol formation relative to the Pacific Ocean but also that open-ocean sympagic and terrestrially influenced coastal ecosystems both contribute to shaping aerosol size distributions. We suggest that terrestrial ecosystems – including river outflows and tundra – strongly affect aerosol emissions in the Arctic coastal areas, possibly more than anthropogenic Arctic emissions. The increased river discharge, tundra emissions and melting sea ice should be considered in future Arctic atmospheric composition and climate simulations. The average CCN concentrations at a supersaturation ratios of 0.4 % were 35±40 cm−3, 71±47 cm−3 and 204±87 cm−3 for Arctic marine, Arctic terrestrial and Pacific marine aerosol categories, respectively. Our results aim to help evaluate how anthropogenic and natural atmospheric sources and processes affect the aerosol composition and cloud properties.

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