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  4. Press release with author’s message— From ArCS II News Letter No.4 —

Press release with author’s message
— From ArCS II News Letter No.4 —

ArCS II News Letter No.4 introduced press releases issued in 2021 summer and fall with authors’ messages telling their thoughts, future prospect, and backstories of their research projects. The topics include detection of cutoff lows and preexisting troughs, the impact of resource development in the Republic of Sakha, and black carbon aerosols originating from mid-latitude biomass burning.
*Affiliations are at the time of the newsletter publication.

A new proposed scheme towards seamless detection of cutoff lows and preexisting troughs

Satoru Kasuga
(Department of Sustainable Resource Sciences, Mie University Graduate School of Science and Technology, Niigata University
*at the time of press release)

A cutoff low is a low-pressure system formed in the high troposphere, often accompanied by bad weather and gusty winds. It is generated in the polar region and is an important event in understanding the connection between changes in the polar atmosphere and the weather in our daily lives. However, unlike general low-pressure systems, there is no standard altitude for cutoff lows. Its scale also varies widely, making it difficult to evaluate its intensity consistently. In this study, we considered the geometry of geopotential height fields associated with cutoff lows and developed a convenient scheme that provides various information, including intensity and scale. I extend my sincere gratitude to my supervisor and coauthors for their cooperation. I hope to use the scheme to help elucidate cutoff lows and contribute to polar meteorology in the future.

Title Seamless Detection of Cutoff Lows and Preexisting Troughs
Journal Monthly Weather Review
Published September 2, 2021
Authors Kasuga, S., Honda, M., Ukita, J., Yamane, S., Kawase, H., and Yamazaki, A.

See Press Release

Clarifying the impact of resource development on the Arctic community: Examining the case of Sakha

Shinichiro Tabata
(Slavic-Eurasian Research Center, Hokkaido University)

As the sea ice in the Arctic Ocean decreases due to global warming, resources such as oil and gas have undergone intensive development in the Arctic. To clarify the impact of such resource development on the economy and society in the Arctic, we statistically analyzed the case of the Republic of Sakha in the Russian Federation. In addition to examining data on Sakha as a whole, we also analyzed the data of its 36 local governments (districts), which more closely reflect its residents’ lives. We found that diamonds (of which Sakha accounts for 80% of Russia’s production) and oil (which has seen significant increases in production in recent years) contribute significantly to Sakha’s economic growth and fiscal revenue. We plan to conduct further in-depth research on the negative impact of the development of these resources on residents’ lives.

Title The Contribution of Natural Resource Producing Sectors to the Economic Development of the Sakha Republic
Journal Sustainability
Published September 10, 2021
Authors Tabata, S.

See Press Release (only in Japanese)

Black carbon aerosols heating the Arctic: Large contributions from mid-latitude biomass burning

Sho Ohata
(Institute for Space-Earth Environment Research, Nagoya University)

In the rapidly warming Arctic, there is a need for a quantitative understanding of the behavior of black carbon (BC) aerosols and their impact on climate. In this study, we participated in an international aircraft-observation campaign and found that the year-to-year spring variation in Arctic BC abundance is strongly correlated with biomass burning in the middle latitudes. Moreover, current numerical models significantly underestimate the contribution of BC from biomass burning. Global warming has the potential to increase biomass burning in various regions. This study suggests that these future changes in BC emissions could influence the amount of Arctic BC and its radiative impacts more than estimates provided in previous studies. We aim to continue our observations of BC in the Arctic and contribute to the improvement of numerical models.

Title Arctic black carbon during PAMARCMiP 2018 and previous aircraft experiments in spring
Journal Atmospheric Chemistry and Physics
Published November 4, 2021
Authors Ohata, S., Koike, M., Yoshida, A., Moteki, N., Adachi, K., Oshima, N., Matsui, H., Eppers, O., Bozem, H., Zanatta, M., and Herber, A. B.

See Press Release