Effects of Global Change on Ocean Biogeochemistry and Ecosystems in the Seas Surrounding Taiwan in the Western North Pacific : Using Multi-Satellite Data

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Project title

Code/計畫編號

MOST103-2611-M019-006

Translated Name/計畫中文名

全球變遷對西北太平洋臺灣海域海洋生物地球化學與生態系統影響之長期觀測與研究 (I)－子計畫：全球變遷因子對東海及西北太平洋黑潮海域生態環境之影響：衛星遙測分析

Project Coordinator/計畫主持人

Shih-Jen Huang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Marine Environmental Informatics

Website

https://www.grb.gov.tw/search/planDetail?id=8362350

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

31-07-2015

Bugetid/研究經費

455千元

ResearchField/研究領域

海洋科學

"本研究主要目的是應用多重衛星資料探討東海及西北太平洋黑潮海域的大氣環境與海洋物理、葉綠素分布及基礎生產力等海洋參數的關係，考慮的大氣因素包括颱風、降水、季風傳送的沙塵暴、生質燃燒及人為氣膠等。而大氣環境因子與海洋環境參數的時空變化均屬於全球變遷因子。由於海洋基礎生產力在全球碳循環中扮演著重要的角色，而基礎生產力與葉綠素有密切關係，並且會受到海水溫度、日照及營養鹽供應的影響。在夏季，高溫的海水有助於颱風的增強，當颱風的低壓中心通過後，較深層的海水會被舉升，而降低海表面海溫度度及將較深層的營養鹽輸送到上層而影響葉綠素濃度的分佈。在冬、春季，東北季風興起會將北方中國大陸所排放懸浮在大氣中的物質，甚至大自然的沙塵也會被季風傳送到本研究區域，因為氣膠對輻射的散射作用，抵達地表的輻射能會減少，而影響海洋能量的取得；另外，氣膠為來自大自然或人為產生的懸浮物質，提供海水中浮游植物營養物質。本研究擬以可穿透雲層的TRMM/TMI (Tropical Rainfall Measuring Mission Microwave Image)所反演的海面溫度及降水資料、MODIS 衛星的葉綠素濃度及氣膠光學厚度及粒徑資料；與 QuiKSCAT、AMSRE 及 ASCAT 的海面風場資料，以瞭解東海及西北太平洋黑潮海域生態環境受颱風及氣膠等全球變遷因子影響的程度、及其年際變化與受聖嬰事件影響。""This project aims to use multi-satellite data to investigate the relationship between the oceanic parameters and the atmospheric environment of the East China Sea and the Northwest Pacific. The oceanic parameters may include ocean physics, chlorophyll distribution and the primary production. Typhoons, rainfall, dust transported by monsoons, biomass burning, and anthropogenic aerosols are all involved in the atmospheric environment. Indeed, those atmospheric environment factors and the spatial and temporal variances of the oceanic parameters belong to the factors of global change. The primary production may closely relate to the chlorophyll, so it actually plays an important role in the global carbon cycle. Moreover, the chlorophyll may be affected by the sea surface temperature, the solar radiance, and the nutrients. In summer the higher sea surface temperature may enhance the intensity of typhoon. The deeper water will be pumped to the ocean surface after the typhoon center passes. Therefore, the sea surface temperature will be cooled down and the nutrients in the deeper layer will be transported up then affect the chlorophyll distribution. In winter and spring, the atmospheric suspension material or dust will be transported to the research region from Mainland China by the prevailing northeasterly. Generally, the air suspension materials are called aerosols. When the solar energy arrives at sea surface, it will be reduced by the aerosol scattering. Meanwhile, the supply of oceanic energy will be restricted. Otherwise, the suspension materials, aerosols, will provide nutrients for the phytoplankton. Therefore, in this project, some satellite data are used to study how typhoons and aerosols, two of the global-change factors, influence the ecological environment of the research region. They include the sea surface temperature, wind field data, concentration of chlorophyll-a, and aerosol optical depth. They are respectively retrieved from Tropical Rainfall Measuring Mission Microwave Image (TRMM/TMI), QuikSCAT, AMSRE,Ascat and MODIS (Moderate Resolution Imaging Spectrometer) observation data. In addition, both the inter-annual variance of the global-change factors and the impact of El Nino will be investigated."

Keyword(s)

氣膠
海面水溫
葉綠素濃度
基礎生產力
aerosol
sea surface temperature
chlorophyll
primary production

DSpace CRIS

Effects of Global Change on Ocean Biogeochemistry and Ecosystems in the Seas Surrounding Taiwan in the Western North Pacific : Using Multi-Satellite Data

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