Effect of Global Change on Derived Source of Atmospheric Dry and Wet Deposition Nutrients in the Seas Surrounding Taiwan in the Western North Pacific

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Project title

Code/計畫編號

NSC102-2611-M019-007

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大氣乾濕沉降營養鹽來源的影響

Project Coordinator/計畫主持人

Hung-Yu Chen

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=3107752

Year

2013

Start date/計畫起

01-08-2013

Expected Completion/計畫迄

01-07-2014

Bugetid/研究經費

1345千元

ResearchField/研究領域

海洋科學

"當今，由於人為活動強度的增加伴隨著石化燃料燃燒、生質燃燒、土地使用和工業發展所產生的釋放，已經導致大氣中無機和有機營養鹽的濃度急遽增加。在過去的 150 年間，藉由大氣輸送到海洋的營養鹽濃度，在某些區域，已經增加高達千倍；而且在短期和中期的未來，這個增加趨勢還會持續。在本計畫中，我們將以基隆與彭佳嶼兩測站現場實測資料，探討藉由大氣輸送的乾沉降與濕沉降進入東海和西北太平洋的量。從我們過去發表的相關論文(Chen and Chen, 2008; Chen et al., 2010, 2011)，我們將嘗試將這些資料統整，以估算大氣中無機和有機營養鹽進入西北太平洋表層的通量。我們過去的研究發現，這些通量明顯受到氣團來源區域的影響。因此，本計畫的目標有：(1)水溶性無機與有機營養鹽在東亞邊緣海大氣中之分布；(2) 高、低分子量有機營養鹽之貢獻度；(3)海洋大氣中乾沉降與濕沉降之來源和(4)亞洲沙塵對區域內無機與有機營養鹽之影響。" "In the present-day scenario of growing anthropogenic activities associated with emissions from fossil fuel, biomass burning, land use changes, and industrial development have led to rapid increase in the atmospheric concentrations of inorganic and organic nutrient species in Asia. Atmospheric nutrient inputs to the ocean are estimated to have increased by up to a factor of three as a result of increased anthropogenic emissions over the last 150 years, with further increases expected in the short‐ to mid‐term at least. In this work we attempt to derive atmospheric nutrient inputs to the East China Sea and Northwest Pacific Ocean using data obtained from aerosol and rain sampling on a land-based station and remote island. While the results of these data have been published (Chen and Chen, 2008; Chen et al., 2010, 2011), the goal of this research is to draw all our data together and estimate inorganic and organic nutrient inputs to surface Northwest Pacific waters. We have previously observed that nutrient concentrations in aerosol samples collected over the Northwest Pacific are heavily influenced by the air-mass derived source regions. The objective of this research include characterization of (1) water-soluble inorganic and organic nutrient over the marginal sea of East Asia, (2) high and low molecular weight organic compounds contribution to the organic species pool, (3) the sources of atmospheric inorganic and organic species in marine dry and wet depositions, and (4) the impact of Asian dust on the distribution of inorganic and organic species in the region."

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Effect of Global Change on Derived Source of Atmospheric Dry and Wet Deposition Nutrients in the Seas Surrounding Taiwan in the Western North Pacific

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