Estimation of austral summer net community production in the Amundsen Sea: Self-organizing map analysis approach

Abstract

During the past three years of 2011, 2012 and 2014 in austral summer, we have conducted underway observations of ΔO2/Ar and derived NCP of the Amundsen Sea. We applied SOM analysis to expand our observed data sets and estimate the NCP during the summer season. In this study, we estimate summer season NCP and find a variables set which optimallydelineates the NCP variation in the Amundsen Sea as well. Moreover, we attempt to analyze interannual variation of the Amundsen Sea NCP by taking climatological factors into account for the SOM analysis.