Influence of Atmospheric Correction on Calculation Accuracy of Sea Reflecting Capacity in Seadas Program Complex
Author: Kachur, Vasily
Source: Atmosphere Aerosol, Phytoplankton and its Influence on Climate Forming in the Pacific Ocean: Measurement New Methods, Issue data not provided , pp. 23-27(5)
Abstract:Observation of the ocean color is of great importance. Phytoplankton being the major contributor to the water color, remote observations of the ocean color allow finding concentration of phytoplankton chlorophyll in water. Nowadays satellite data are the only practically viable way of monitoring spatial and seasonal plankton variations at the water surface level; and they present the most vital information for studying ocean primary productivity, global processes of carbon dioxide consumption and evaluation of the sea ecological condition. This work analyzes accuracy of various atmospheric correction algorithms available in the SeaDAS program complex, and singles out the most appropriate algorithms for processing satellite data of the Gulf of Peter the Great.
Light can go in various ways before it reaches the satellite sensor. Thus, radiance intensity (E) measured by an artificial satellite can be presented as E=E A +E M +E Î ÒÐ, where EA is brightness of the signal dispersed and reflected in the atmosphere; EM - brightness of the signal coming from the sea depth (the useful signal); EOTp — brightness of the signal reflected by the sea surface. Atmospheric correction of radiance is applied for extracting the useful signal from the entire signal. Atmospheric correction accuracy vitally influences the accuracy of water bioparameters calculated by means of satellite information. The SeaDAS program complex is widely used for processing satellite data. It is capable of processing data from various sources, including such satellite radioparameters as SeaWiFS, CZCS, MODIS, etc. The goal of this research lies in comparative analysis of work of various atmospheric correction algorithms available in SeaDAS and singling out the most suitable algorithm for satellite processing of data obtained in the Gulf of Peter the Great.
Document Type: Research Article
- Atmosphere Aerosol, Phytoplankton and its Influence on Climate Forming in the Pacific Ocean: Measurement New Methods
Atmosphere Aerosol, Phytoplankton and its Influence on Climate Forming in the Pacific Ocean: Measurement New Methods is a collection of new articles by young academics, students and PhD students who participated in the 1st International Sailing Conference of Climate Forcing, held on the board the Sailing Training Ship Nadezhda in the Sea of Japan and the Okhtosk Sea in August 2010. The collection presents a vivid overview of current problems in the research fields of atmosphere aerosol, phytoplankton communities, volcanic activities and hydroacoastics in order to investigate climate change's influence on phytoplankton communities. This collection of articles will be of interest to researchers and specialists in the fields of atmosphere and ocean monitoring, and climate forcing.
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