Climate analysis using sulfur stable isotope ratio from Antarctic snow and ice core
| Project/Area Number |
26550013
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Environmental dynamic analysis
|
|---|
| Research Institution | University of the Ryukyus |
|---|
Principal Investigator |
UEMURA Ryu 琉球大学, 理学部, 准教授 (00580143)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
本山 秀明 国立極地研究所, 研究教育系, 教授 (20210099)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
HIRABAYASHI Motohiro 情報・システム研究機構, 国立極地研究所, 特任助手 (20399356)
IIZUKA Yoshinori 北海道大学, 低温科学研究所, 助教 (40370043)
|
|---|
| Project Period (FY) |
2014-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Keywords | 硫酸エアロゾル / アイスコア / 硫黄同位体比 / 氷期サイクル / 南極 / フィードバック / 温暖化 / 海洋生物活動 / 安定同位体比 / 気候変動 / DMS / 硫黄同位体 / 安定同位体 / 氷期 |
|---|
| Outline of Final Research Achievements |
Sulfate aerosols affect Earth’s radiative forcing through direct and indirect effects. Ice core data suggest minor changes in sulfate aerosols over the glacial cycles. However, the variations of source contributions of sulfate aerosols remain unclear. In this project, to estimate the changes in source contributions of sulfate aerosols in Antarctica, we analyzed sulfur isotopic ratios of surface snow and ice core. Sulfur isotope ratio of present-day surface snow over East Antarctica shows that the effects of the transport process are small, and major source of present-day sulfate aerosol is marine biogenic activity. The ice core data show that the sulfur isotopic ratio increased from the last glacial period to Holocene.
|
Report
(5 results)
Research Products
(16 results)
-
-
-
[Journal Article] Asynchrony between Antarctic temperature and CO2 associated with obliquity over the past 720,000 years2018
Author(s)
Uemura, R., H. Motoyama, V. Masson-Delmotte, J. Jouzel, K. Kawamura, K. Goto-Azuma, S. Fujita, T. Kuramoto, M. Hirabayashi, T. Miyake, H. Ohno, K. Fujita, A. Abe-Ouchi, Y. Iizuka, S. Horikawa, M. Igarashi, K. Suzuki, T. Suzuki, Y. Fujii
-
Journal Title
Nature Communications
Volume: 9
Issue: 1
Pages: 1-11
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
[Journal Article] Acquisition of isotopic composition for surface snow in east antarctica and the links to climatic parameters2016
Author(s)
Touzeau, A., Landais, A., Stenni, B., Uemura, R., Fukui, K., Fujita, S., Guilbaud, S., Ekaykin, A., Casado, M., Barkan, E., Luz, B., Magand, O., Teste, G., Le Meur, E., Baroni, M., Savarino, J., Bourgeois, I., and Risi, C.
-
Journal Title
The Cryosphere
Volume: 10
Issue: 2
Pages: 837-852
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
[Journal Article] Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica2014
Author(s)
Oyabu, I., Y. Iizuka, R. Uemura, T. Miyake, M. Hirabayashi, H. Motoyama, T. Sakurai, T. Suzuki, T. Hondoh
-
Journal Title
Journal of Geophysical Research
Volume: 119
Issue: 24
Pages: 14045-14058
DOI
NAID
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
-
