Sub-theme A

Session Description

Sub-theme A: Understanding Ocean Processes and Climate in the Indo-Pacific


 
A01: Role of the Indo-Pacific Ocean in Regional Climate Change and Variability

Co-convenors:
Ken-Taro Ando,
andouk@jamstec.go.jp
Japan Agency for Marine and Earth Science and Technology, Japan  
 
Weidong Yu,
wdyu@fio.org.cn
First Institute of Oceanography, SOA, China    

Fadli Syamsudin,
fadlihiro@yahoo.com
Agency for the Assessment and Application of Technology, Indonesia    
 
Wenju Cai,
wenju.cai@csiro.au
Commonwealth Scientific and Industrial Research Organisation, Australia      
 
Surrounding the inter-basin warm pools in the tropical Pacific and Indian oceans, air-sea interaction and time-varying ocean circulations in the tropical Western Pacific, eastern Indian Ocean and marginal seas are critically important for regional and global climate variability. This session seeks contributions with topics including oceanic circulation variability in the tropical Western Pacific and eastern Indian Ocean, interactions with the extra-tropics, low-latitude western boundary currents, the Indonesian Throughflow, and upper ocean processes and air-sea interactions associated with the warm pool, Asia monsoon and marginal sea variations. The session will cover all timescales from diurnal, intra-seasonal, inter-annual to decadal, and climate change trends such as regional sea level rise. This session intends to provide a forum for coordinating on-going and planned observational and modeling efforts relating to global and regional climate variations in the tropical Western Pacific and eastern Indian Ocean, including Maritime continents and Indochina Peninsula.
 
 
A02: Atmospheric Deposition and Biogeochemical Interaction Processes 


Co-convenors:    
Huiwang Gao,
hwgao@ouc.edu.cn  
Ocean University of China, China

Mitsuo Uematsu,
uematsu@aori.u-tokyo.ac.jp
Atmosphere and Ocean Research Institute, the University of Tokyo, Japan
 
Atmospheric deposition of chemicals, coming from dust storm, fossil fuel combustion and biomass burning, is an important source of nutrients (e.g. nitrogen, phosphorus and silicate) and trace metals (e.g. iron, copper, zinc and lead) to the ocean. The impact of atmospheric deposition is believed to occur mainly via the supply of nitrogen and soluble iron and copper, which modulates ocean productivity. The nutrients and a wider range of elements supplied from atmospheric deposition drive the biogeochemical interaction between the surface ocean and lower atmosphere. Atmospheric deposition fluxes around the Indo-Pacific are much larger compared with other oceanic regions, implying more important impacts on ocean ecosystems. This session invites contributions from studies of atmospheric deposition and its impact on the marine environment in Indo-Pacific and global oceans, including observations, laboratory studies, incubation experiments, and modelling of atmospheric wet and dry deposition of aerosol and gases, aerosol composition and fractional solubility, and the biological and chemical response to deposition within the surface ocean. 
 
 
A03: Risk and Vulnerability Assessment on Coastal Sea Level related Hazards


Co-convenors:
Ahmad Khairi Abd Wahab, drakaw@gmail.com
Universiti Teknologi Malaysia, Malaysia

Bui Hong Long,
buihonglongion@gmail.com
Institute of Oceanography, VAST, Vietnam
 
The focus of this session is on the assessment of risk and vulnerability of the coastal region to hazards associated with the projected sea level rise phenomena. Associated hazards include increased impacts from storm surges and waves, coastal erosion, siltation, marine eco-system degradation and saline intrusion. The fundamental underlying processes of sea/land hydrodynamic interactions has long been studied and established. However, threats triggered by the global climate change may bring unforeseen challenges that would require solutions with radically different approaches. The ability to reliably assess the risks and vulnerabilities of the coastal region to these hazards would form the basis for a smart, strategic and economically viable countermeasures. The session will include papers and posters on new or updated methodologies, applications of the latest scientific tools including software and hardware, and presentation of case studies in the WESTPAC region.
 
 
A04: Western Boundary Current: Dynamics, Variability and their Impacts on Climate and Marine Ecosystems


Co-convenors:
Zhaohui Chen, chenzhaohui@ouc.edu.cn
Ocean University of China, China

Xiaopei Lin,
linxiaop@ouc.edu.cn
Ocean University of China, China

Bo Qiu,
bo@soest.hawaii.edu
University of Hawaii at Manoa, USA

Stuart P. Bishop,
spbishop@ncsu.edu
North Carolina State University, USA
 
Strong, persistent currents along the western boundaries (Western Boundary Currents, WBCs) of the world’s major ocean basins are some of the most prominent features of ocean circulation. They carry tremendous amount of water mass, heat, and salt from low to mid latitudes and thus affect physical and biogeochemical water properties along their routes. In recent years, new observations of the WBCs, combined with theoretical and numerical modelling efforts, have provided new insights into the dynamics, structures, variability of these boundary currents and their impact on climate and ecosystems. This session seeks contributions from studies including, but not limited to, multi-scale variability of the WBCs, interactions between WBCs and marginal seas, meso/submeso-scale and frontal processes in the WBC extensions, air-sea interaction, and impact of WBCs on marine ecosystems. Topics from observational, theoretical, and numerical studies of the WBCs of all scales, from turbulent to basin scale and from intraseasonal to multi-decadal timescale, are all welcome.
 
 
A05: Sediment Source-to-Sink Process in the Western Pacific


Co-convenors:
Zhifei Liu, lzhifei@tongji.edu.cn
Tongji University, China

Che Abd Rahim Mohamed,
carmohd@ukm.edu.my
Universiti Kebangsaan Malaysia, Malaysia

Fernando Siringan,
fpsiringan@msi.upd.edu.ph
University of the Philippines, Philippines
 
Terrigenous sediments deposited in the ocean are significant. It is important to understand their formation through weathering, transport from land to sea, sedimentation process, and related environment and climate changes associated with these processes. The western Pacific receives an annual fluvial sediment discharge up to 1x1010 tons, more than 50% of world sediment input to the global ocean, and they have played a crucial role on the changes in the marine environment of western Pacific and surrounding countries. This session calls for papers on weathering and erosion of rocks on land, riverine and oceanic sediment transport, and sedimentation process in various spatial scales in the western Pacific and adjacent oceans. Studies on temporal environment and climate changes in sedimentary records in deltas and marginal seas are encouraged. Responses to human activities of sedimentary processes and other related topics are also welcome.
 
 
A06: Past Climate Variations over the Asian Continental Margin


Co-convenors:
Xuefa Shi, xfshi@fio.org.cn
First Institute of Oceanography, SOA, China

Gerrit Lohmann,
gerrit.lohmann@awi.de
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Germany

Min-Te Chen,
mtchen@ntou.edu.tw
College of Ocean Science and Resource, Taiwan Ocean University
 
Various environment and climate variations occur from subarctic Pacific to tropical Indo-Pacific oceans, which have exerted great effects on social and economical activities in Asian countries. Information of past climates at the Asian continental Margins could help us understand the evolution of modern Asia from its past condition to a future it will go. So far, past-decade research has presented significant climate changes in the western Pacific and Indian Oceans. With a focus on past environments and climates of the Asian Continental Margins, this session will provide insights into both proxy and numerical simulation work, and highlight the recent research results from these regions, in terms of climatic impacts, responses, teleconnections and underlying mechanisms of climate variations between low and high latitudes on millennial and orbital timescales.
 
 
A07: Asian Marginal Seas: Physics, Biogeochemistry and Ecosystem


Co-convenors:
Vyacheslav Lobanov, lobanov@poi.dvo.ru
V.I.Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, Russia

DanLing Tang,
lingzistdl@126.com
South China Sea Oceanological Institute, Chinese Academy of Sciences, China

Sung-Hyun Nam,
namsh@snu.ac.kr
Seoul National University, Republic of Korea

Takeshi Matsuno,
matsuno@riam.kyushu-u.ac.jp
University of Kyushu, Japan
 
Asian Marginal Seas from the South China Sea up to the Okhotsk Sea are one of the most affected areas in the global ocean by climate changes and anthropogenic impacts. There have been considerable advances in exploring these seas in recent years. This session would summarize and share the knowledge and experience in water dynamics, biogeochemistry, ecosystem and their variability at multi-scales, and discuss the future directions of research and possible WESTPAC projects. The session seeks contributions from studies including, but not limited to, water mass and current system, ventilation and overturning circulation, internal waves, frontal mixing, strait-exchange flows, biogeochemistry cycles, and the impacts on the variability of pelagic and shelf ecosystems in these marginal seas.
 
 



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