The Spatiotemporal Distribution of Chlorophyll Concentration over the Northwestern Pacific and the Aerosols Impact

瀏覽統計 Email 通知 RSS Feed

簡歷

基本資料

Project title

Code/計畫編號

MOST105-2611-M019-025

Translated Name/計畫中文名

西北太平洋的葉綠素濃時空分布及其受氣膠的影響

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=11882427

Year

2016

Start date/計畫起

01-08-2016

Expected Completion/計畫迄

31-07-2017

Bugetid/研究經費

963千元

ResearchField/研究領域

海洋科學

"本研究將以多元逐步的方式分析多重衛星資料在西北太平洋及其邊緣海域的葉綠素與氣膠的時間與空間的變化。由於海洋基礎生產力與葉綠素濃度的分布有密切關係，並且受到營養鹽的供應、日照及水溫等因素的影響。在本研究海域中主要受到東北季風影響，其次為西南季風。東北季風會長中國大陸所人為排放的懸浮在大氣中的物質和自然因素造成的沙塵吹送出海，而影響到西北太平洋及其邊緣海域。因懸浮在大氣中的氣膠具散射作用，而影響抵達地表的輻射能量。這些氣膠沉降到海水中，也提供浮游植物的營養。而近陸地的陸棚海域，因受到陸源物質影響較明顯，而目前的衛星資料都以相同的演算法推算所有海域的葉綠素甲濃度，導致近岸海域的衛星葉綠素甲濃度誤差量較大。本研究將配合研究船的每季航次，以輻射光譜儀觀測海水的輻射強度和反射率，同時採水量測葉綠素濃度，以建立臺灣附近陸棚海域的葉綠素甲濃度的演算法。進而分析葉綠素甲濃度的時間與空間的分布，探討其受氣膠、風等大氣因素及海溫、渦流等海洋因子的影響。""The multi-satellite data are used by multiple stepwise process to investigate the spatiotemporal variability of chlorophyll concentration and aerosol of the Northwestern Pacific marginal sea. The primary production may closely relate to the chlorophyll. Moreover, the chlorophyll may be affected by the nutrients, solar radiance, and sea surface temperature. In the study area, the dominant winds are the northeastern and southwestern monsoon. The atmospheric suspension material or dust of continental Asia will be transported to the study area by the prevailing wind. The solar energy 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. The continental shelf water are affected by terrigenous obviously. Therefore, the satellite retrieved chlorophyll concentration has higher error during the continental shelf area. To promote the accuracy of the chlorophyll concentration algorithm with satellite data on the adjacent Taiwan ocean (with the continental shelf), the spectral radiometer will observe the ocean radiance intensity and reflectance on each season. Simultaneously, sampling the sea water to measure the chlorophyll concentration is used."

Keyword(s)

葉綠素濃度
氣膠
陸棚
chlorophyll concentration
aerosol
continental shelf

DSpace CRIS

The Spatiotemporal Distribution of Chlorophyll Concentration over the Northwestern Pacific and the Aerosols Impact

基本資料

Description