Effects of Global Change on Ocean Biogeochemistry and Ecosystems in the Seas Surrounding Taiwan in the Northwest Pacific (II): Modeling Studies of Aerosol Particles

瀏覽統計 Email 通知 RSS Feed

簡歷

基本資料

Project title

Code/計畫編號

MOST104-2611-M019-023

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(Ⅱ)---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：大氣懸浮微粒模擬分析

Project Coordinator/計畫主持人

Fu-Jung Tsai

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

黃世任

Department/Unit

Department of Marine Environmental Informatics

Website

https://www.grb.gov.tw/search/planDetail?id=11571258

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

01-07-2016

Co-Investigator(s)

Shih-Jen Huang

Bugetid/研究經費

798千元

ResearchField/研究領域

海洋科學
大氣科學
自然生態保育

"在大氣營力中，大陸沙塵傳輸為亞洲地區影響海洋營養鹽供應最顯著的營力作用，因為大陸沙塵活動佔了約半年的東北季風期間，而且沙塵顆粒中富含地殼元素。但是大陸沙塵往下游傳送時不僅帶來沙塵顆粒，污染物也會附著於沙塵顆粒上，並與沙塵發生反應。例如在酸性污染物的作用下，沙塵顆粒中的鐵容易還原成水溶性的兩價鐵，成為浮游植物可以利用吸收的營養鹽。近年來中國經濟的快速成長，大氣汙染物排放嚴重，在東北季風的吹送下，沙塵將與這些污染反應物一起被傳送出來，影響下游的邊緣海與西北太平洋海域。為了了解沙塵與汙染顆粒的反應，並定量沙塵顆粒上的營養鹽成分與改變，及其對浮游植物的影響，本研究擬採用3度空間東亞的區域性大氣模式配合觀測來分析探討。但是為探討污染物與沙塵顆粒的反應作用，模式需要另外加入相關反應程式，並與觀測作比對，並將修改後的模式用於定量計算沙塵中鐵等營養鹽的水溶性量，以及對海洋基礎生產力的影響。本計晝預期以三年時間分階段完成模式的編寫校正與相關觀測資料的分析，接者模擬並輸出結果，分析模擬結果，計算水溶性鐵與其他營養鹽因為酸化學反應的改變，以及這些營養鹽在西北太平洋黑潮海域的沈降量，並定量浮游植物等基礎生產力的影響，比對衛星資料中葉綠素的增長數據，探討沙塵的營養鹽沈降量對西北太平洋黑潮海域生地化的影響。" "Among the atmospheric effect, Asian dust transport is the most prominent effect that affects marine nutrient support in the Asian area. This is because Asian dust activities occur within the half-year of northeasterly monsoon, and dust particles are enriched with crustal element. However, when Asian dust events are transported downwind, not only dust component but also pollutants come with the particles. Some pollutants even react with dust components. For example, under the acidic pollution reaction, iron in dust particle can be reduced to soluble iron, and are available by the phytoplankton. Recently, China’s economic is under rapid growth, and the atmospheric pollutant problem is quite serious. Under the northeasterly monsoon, dust and the pollutant particles can be transported out to affect the downwind areas in the Northwestern Pacific areas. In order to understand the reactions between dust and pollutant, and to quantify the change of the nutrient component in the dust particles, as well as their impacts on the phytoplankton, this project aims to use 3D regional model along with observations to analyze the problem. In order to understand the reaction between dust and polluted particles, some related reactions need to be added, and compare with observations. The modified model is used to quantify the soluble nutrients in the dust particles and to calculate their effects on the marine basic productivity. This project expects to finish the coding, debugging, and comparison with observation step by step within three year. Later, the modeling results will be output and analyzed. Then, the change of soluble iron and other nutrients due to acid reactions and their deposition on the ocean surface will be calculated. The impacts on the marine basic productivity will be quantified and compare with satellite data. The impacts of dust nutrient deposition on the marine biogeochemistry of the Northwestern Pacific are discussed."

DSpace CRIS

Effects of Global Change on Ocean Biogeochemistry and Ecosystems in the Seas Surrounding Taiwan in the Northwest Pacific (II): Modeling Studies of Aerosol Particles

基本資料

Description