Features of the spatial and temporal distribution of chlorophyll “ a “ and its relation to the water surface temperature by manifestations in the earth remote sensing data

Irma Martyn,Yaroslav Petrov,Sergey Stepanov,Artem Sidorenko,O Loretts,S Vinogradov,N Ojha,A Ruchkin,V Kukhar

doi:10.1051/e3sconf/202022205005

Irma Martyn, Yaroslav Petrov + Show 7 more

Open Access

https://doi.org/10.1051/e3sconf/202022205005

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Abstract

An effective method for evaluating chlorophyll “a” is remote sensing in the optical range by satellite spectroradiometers. To study the concentration of chlorophyll “a” in the bio-productive regions of the ocean, we used data from the MODIS-Aqua scanner of the NASA GIOVANNI system, which provides access to satellite data archives at the same time as tools for their processing and analysis. The variability of the chlorophyll “a” concentration in surface waters may indicate the state of water productivity. The paper considers the temporal and spatial variability of chlorophyll “a” concentration and water surface temperature from satellite data and the influence of water surface temperature on this variability in the Gulf of Alaska and in the area of the Peruvian upwelling. As a result, a direct relationship between changes in the concentration of chlorophyll “a” and the water surface temperature was revealed. It is possible to assess the bio-productivity depending on the variability of the concentration of chlorophyll “a”.

Highlights

The main producer of organic matter in the seas and oceans is phytoplankton
The complex chemical compound chlorophyll, which is part of phytoplankton cells, is the main apparatus that provides the process of photosynthesis
The primary production produced by phytoplankton during photosynthesis determines the development of the rest of the living marine world [3]

Summary

Introduction

The main producer of organic matter in the seas and oceans is phytoplankton. The complex chemical compound chlorophyll, which is part of phytoplankton cells, is the main apparatus that provides the process of photosynthesis. The content of chlorophyll "a" in marine phytoplankton is an important characteristic of assessing the primary biological productivity of water: a natural relationship between its quantity and the amount of phytoplankton production, as well as the ability to calculate production from known concentrations of chlorophyll "a" and illumination on the horizons [2]. Some authors note a direct proportional relationship between chlorophyll "a" and the value of primary production. The primary production produced by phytoplankton during photosynthesis determines the development of the rest of the living marine world [3]

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