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Multiple adakitic magma genesis in the western Lützow-Holm Complex, East Antarctica
Full text linkThe 15th Symposium on Polar Science/Ordinary sessions [OG] Polar geosciences, Wed. 4 Dec. / Entrance Hall (1st floor), National Institute of Polar Researchconference outpu
Petrogenesis of garnet + orthopyroxene corona around olivine in metagabbros from the Mozambique Belt in central Malawi
Full text linkThe 15th Symposium on Polar Science/Ordinary sessions [OG] Polar geosciences, Wed. 4 Dec. / Entrance Hall (1st floor), National Institute of Polar Researchconference outpu
Processes of high sea ice production and dense water formation in the Cape Darnley polynya that creates the precursor of Antarctic Bottom Water
Full text linkThe 15th Symposium on Polar Science/Ordinary sessions [OM] Polar meteorology and glaciology, Tue. 3 Dec. / Entrance Hall (1st floor), National Institute of Polar Researchconference outpu
Preliminary results of LODEWAVE Phase II (LOng-Duration balloon Experiment of gravity WAVE over Antarctica)
Full text linkThe 15th Symposium on Polar Science/Ordinary sessions [OS] Space and upper atmospheric sciences, Wed. 4 Dec. / Entrance Hall (1st floor), National Institute of Polar Researchconference outpu
Autonomous detection of VLF triggered emissions using CNN
Full text linkThe 15th Symposium on Polar Science/Ordinary sessions [OS] Space and upper atmospheric sciences, Wed. 4 Dec. / Entrance Hall (1st floor), National Institute of Polar Researchconference outpu
Assessment of the human footprint in Antarctica: A case study Larsemann Hills
No full textThe article is devoted to assessment of the anthropogenic influence in the Larsemann Hills, East Antarctica. The emission of the main pollutants and greenhouse gases from diesel generators used at Antarctic stations are estimated for the period since the beginning of the development of the oasis area (from 1986 to 2019). It is shown that SO2 emissions decreased in 2019 compared to peak values in 1990 by 5.6 times, which was due to a significant decrease of the sulfur content in fuel. Emissions of other pollutants mostly increased. Surface air pollution by SO2, NO2, CO, PM10 and black carbon (BC) using the AERMOD dispersion model are characterized. It is revealed that the most significant emission health impact is due to increase of surface concentrations of nitrogen dioxide. Deposition fluxes of PM10 and BC are estimated. The fluxes of PM10 and BC dry deposition in the territory of Larsemann Hills can reach maximum values of 27.5 and 21.7 mg/m2/year, respectively; can be traced in certain directions at a distance of up to 2.0 km or more. Modeling of BC deposition due to the dispersion of emission allowed to make draft estimates of soot concentration in the snow of the area and resulting radiative forcing climatic effects.journal articl
Controlling factors of spatiotemporal variations in black carbon concentrations over the Arctic region by using a WRF/CMAQ simulation on the Northern Hemisphere scale
No full textBlack carbon (BC) aerosol, released into the atmosphere from fuel combustion and biomass burning, is known to be an important short-lived climate forcer (SLCF) because it efficiently absorbs solar radiation and directly heats the atmosphere. Because its accumulation on snow and ice promotes their melting, BC is an important driver of warming, particularly in the Arctic region. Observed surface BC concentrations in the Arctic region show typical seasonal variations, increasing during the winter and spring and decreasing during the warmer season with some peak events in few months of summer, along with large interannual variations. The present study investigates the primary factors influencing the differences in the spatiotemporal surface concentrations of BC in the Arctic region by performing a hemispheric-scale air-quality simulation for the years 2015 and 2016. The model reasonably simulates the observed BC concentration levels and their seasonal patterns, as well as their differences between these two years. This study shows that large year-to-year variability in BC-rich air-mass pathways, such as long-range transport from surrounding regions, and besides these air-mass stagnation within the Arctic region, influence the differences in the Arctic BC concentrations between 2015 and 2016. In addition, the Arctic BC concentrations were also controlled by interannual variations in the amount and distribution of emissions due to the size and the location of open fires, including both Asian crop residue burning in spring and boreal forest fires in summer.journal articl
機械学習を用いた南極氷床における表層積雪の堆積削剥パターンのデータセット構築
Full text link極域データサイエンスに関する研究集会II
日時：2024年2月26日（月）13:00〜18:00, 2月27日（火）09:30〜12:00
場所：情報・システム研究機構データサイエンス共同利用基盤施設DS棟1F（大会議室H108），オンライン
主催：情報・システム研究機構データサイエンス共同利用基盤施設極域環境データサイエンスセンターconference objec
微小な地殻ひずみ信号検出のための解析技術の確立と超精密観測記録の活用
Full text link極域データサイエンスに関する研究集会II
日時：2024年2月26日（月）13:00〜18:00, 2月27日（火）09:30〜12:00
場所：情報・システム研究機構データサイエンス共同利用基盤施設DS棟1F（大会議室H108），オンライン
主催：情報・システム研究機構データサイエンス共同利用基盤施設極域環境データサイエンスセンターconference objec
南極地域観測隊活動記録の映画制作
Full text link第20回南極設営シンポジウム
2024年6月25日（火）
場所：国立極地研究所極地観測棟3F，オンライン
主催：国立極地研究所南極観測センターconference outpu