A Preliminary Study on the Estimation of the Chlorophyll Concentration in the Marginal Sea of the Northwestern Pacific Based on Satellite Data

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基本資料

Project title

Code/計畫編號

MOST107-2611-M019-021

Translated Name/計畫中文名

基於衛星觀測資料建立西北太平洋邊緣海域葉綠素濃度演算法的初步探討

Project Coordinator/計畫主持人

Shih-Jen Huang

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

羅耀財

Department/Unit

Department of Marine Environmental Informatics

Website

https://www.grb.gov.tw/search/planDetail?id=12672782

Year

2018

Start date/計畫起

01-08-2018

Expected Completion/計畫迄

31-07-2019

Co-Investigator(s)

Yao-Tsai Lo

Bugetid/研究經費

611千元

ResearchField/研究領域

海洋科學

鄰近陸地海域因受陸源物質影響較大，現有衛星所提供的葉綠素濃度在這些海域大都呈現過高的現象。本研究將利用目前作業中的繞極軌道衛星與地球同步衛星資料，及衛星多波段的特性，先以衛星所觀測到的輻射強度及遙測反射率，辨識區分為近陸地海域(inner region)、陸棚海域(middle region)、及大洋海域(outer region)。並蒐集全球葉綠素歷年觀測資料，並配合研究船的每季航次，以輻射光譜儀現場觀測海面輻射強度與反射率觀測資料，同時採水量測葉綠素濃度。由於衛星多波段觀測，在不同海域的各波段的特徵有所差異，所以本研究將初步建立鄰近陸地的二類水體及遠離陸地影響的一類水體等不同海域上的葉綠素濃度演算法，以期建立西北太平洋的邊緣海域上更接近現場實測值的衛星資料葉綠素濃度資料，提供海洋生地化及海洋與大氣交互作用等研究應用。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。Due to the greater impact of terrigenous material in the adjacent terrestrial waters, the chlorophyll concentration provided by the existing satellites is mostly too high in these areas. In this study, we will use currently operational satellite data and the multi-band characteristics of satellite. Firstly, the radiation intensity and remote sensing reflectance observed by satellites will be divided into the inner region, the middle region, and the outer region. In addition, the global observation data of chlorophyll over the years are adopted to compare with the in-situ data observed by the research vessel, which collects the radiation intensity and reflectance data of the sea surface with the radiation spectrometer, and simultaneously obtains the sampling water to measure the chlorophyll concentration. Because the multi-band satellite presents different characteristics in each ocean region, this study will initially establish the chlorophyll concentration algorithm for different types of waters such as Case 2 water bodies adjacent to the land and Case 1 water bodies for the open ocean. Furthermore, the chlorophyll concentration data in the marginal seas of northwest Pacific Ocean will appear much closer to the in-situ results, so as to provide the research applications such as marine biogeochemistry and ocean-atmosphere interactions. Additionally, the spatiotemporal variation of chlorophyll a concentration is analyzed, and those atmospheric and oceanic influential factors such as aegis, wind, sea temperature and eddy current will be discussed.

Keyword(s)

葉綠素
一類水體
二類水體
演算法
chlorophyll
Case 1 water
Case 2 water
algorithm

DSpace CRIS

A Preliminary Study on the Estimation of the Chlorophyll Concentration in the Marginal Sea of the Northwestern Pacific Based on Satellite Data

基本資料

Description