A novel algorithm to estimate marine primary production using bio-optics and image processing

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K00513
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido University
• Principal Investigator: HIRATA Takafumi 北海道大学, 地球環境科学研究院, 特任准教授 (80576231)
• Research Collaborator: MURAKAMI Hiroshi
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: リモートセンシング / 海色 / 植物プランクトン / 一次生産 / 生物光学

Outline of Final Research Achievements

A satellite remote sensing algorithm was developed to estimate the group-specific primary production of marine phytoplankton. A novelty of the algorithm is that it integrates bio-optical modeling with image processing. Analysis of the 10-year long satellite data of the group-specific primary production obtained from the new algorithm showed that 1) the photosynthetic rate is different among the groups and 2) factors affecting variability of the photosynthetic rate also differ among the groups: the photosynthetic rate of diatoms are mainly regulated by their biomass, whereas that of cyanobacteria by photo-physiology. The rate of haptophytes are affected by both their biomass and photo-physiology, depending on season/months in consideration.

Free Research Field

リモートセンシング