Effects of Global Effects on the Atmospheric Reactive Nitrogen Species in the Seas Surrounding Taiwan in the Northwest Pacific

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基本資料

Project title

Code/計畫編號

MOST105-2611-M019-022

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大氣活性氮物種之影響

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=11880356

Year

2016

Start date/計畫起

01-08-2016

Expected Completion/計畫迄

01-07-2017

Bugetid/研究經費

1716千元

ResearchField/研究領域

海洋科學

"大氣中越來越多人為產生的活性氮物種(reactive nitrogen species)透過沉降進入海洋，能提高每年海洋生產量約3%。1990年代初期，大多數的北美、歐洲和亞洲的沈降通量大於750 mg-N m-2 yr-1。若是根據目前的人口增加速率，到了 2050年人口數將比2000年增加50%來到90億人口數；因此，對於食物與能源的需求也會跟著增加。在這個增加的趨勢下，南亞與東亞將有大幅度的增加，預估將會超過5000 mg-N m-2 yr-1，北太平洋將會巨幅增加將達>100 mg-N m-2 yr-1。其中，無機性與有機性氮物種各約占70%和30%。在本計晝中，我們將以基隆與彭佳嶼兩測站平行採樣資料，探討藉由大氣輸送的有機氮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, 2015)，我們將這些資料統整，以估算大氣中活性氮物種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，本計晝的目標有• (1) 藉由氣膠採樣器採集大氣懸浮微粒，瞭解活性氮物種濃度隨時間分佈的情形，藉以探討有機氮物種之傳輸機制。 (2) 利用主要陰、陽離子鑑識技術及統計分析，針對大氣懸浮微粒中有機氮物種成份含量特徵追蹤來源。 (3) 藉由各樣品間的相關性，判別大氣懸浮微粒中氮物種之來源。 (4) 計算氮物種之通量值，瞭解區域相對貢獻程度；並提供其他子計晝大氣氮物種輸入資訊，以探討其對海洋環境生態之影響。" "Increasing amounts of atmospheric anthropogenic reactive nitrogen species are being deposited into oceans, thereby increasing the annual marine biological production by approximately 3%. In the early 1990s, the majority of the deposition fluxes observed in North America, Europe, and Asia exceeded 750 mg-N m-2 yr-1. According to the current population growth rate, the global population in 2050 will be 9 billion, which is a 50% increase from the population in 2000, indicating that the demands for food and energy will grow. Accordingly, the deposition fluxes in South Asia and East Asia, which will increase substantially, are expected to exceed 5000 mg-N m-2 yr-1. In addition, the flux in the North Pacific Ocean will increase considerably, possibly exceeding 100 mg-N m-2 yr-1. The flux of inorganic nitrogen (IN) and organic nitrogen (ON) accounts for 70% and 30%, respectively, of the current atmospheric nitrogen species on earth. In this work we attempt to derive atmospheric reactive nitrogen inputs to the East China Sea and Northwest Pacific Ocean using parallel sampling between a land-based station and remote island (Pengjia). While the results of these data have been published (Chen and Chen, 2008; Chen et al., 2010, 2011, 2015), the goal of this research is to draw all our data together and estimate reactive nitrogen inputs to surface Northwest Pacific waters. We have previously observed that reactive nitrogen 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) transportation mechanisms of reactive nitrogen in different season of the study area, (2) derived sources of air mass by using sodium ion and non-sea-salt ions, (3) sources of atmospheric reactive nitrogen by using correlation analysis, and (4) impact of atmospheric reactive nitrogen inputs on marine environment in this region."

DSpace CRIS

Effects of Global Effects on the Atmospheric Reactive Nitrogen Species in the Seas Surrounding Taiwan in the Northwest Pacific

基本資料

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