The Asian Aerosols Affect the Chlorophyll Concentration of the Northwest Pacific Marginal Sea

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Project title

Code/計畫編號

MOST104-2611-M019-013

Translated Name/計畫中文名

亞洲氣膠對西北太平洋西邊緣海域葉綠素濃度的影響

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=11566911

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

31-07-2016

Bugetid/研究經費

1182千元

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西北太平洋邊緣海域葉綠素受亞洲氣膠的影響。並分析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。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。而東北季風會將北方中國大陸所排放懸浮在大氣中的物質和沙塵也會傳送出海，最先影響到的是西北太平洋的邊緣海域。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；而大氣中的氣膠也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 及NPP/VIIRS 衛星的葉綠素濃度及氣膠光學厚度及粒徑資料，探討西北太平洋邊緣海域的葉綠素濃度受亞洲氣膠的影響。並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，以修正臺灣附近海域第二類水體的葉綠素濃度的衛星資料演算法。""This project aims to use multi-satellite data to investigate the Asian aerosols affecting the chlorophyll concentration of the Northwest Pacific marginal sea. 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. 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. The atmospheric suspension material or dust will be transported to the research region from Mainland China by the prevailing northeasterly. 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. 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. To promote the accuracy of the chlorophyll concentration algorithm with satellite data on the adjacent Taiwan ocean (the case II water), 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)

氣膠
葉綠素濃度
基礎生產力
aerosol
chlorophyll
primary production

DSpace CRIS

The Asian Aerosols Affect the Chlorophyll Concentration of the Northwest Pacific Marginal Sea

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