Decadal oceanic changes in the Arctic Ocean using multi-satellite measurements

Abstract

Since the Arctic warming becomes more progressed, not only in the field of science but also the economy, industry and politics are paying attention to the environmental changes of the Arctic. The Arctic is controlled by air-sea interactions and feedback on a global scale. In other words, a wide-ranging view (rather than single area or data) is required to understand the Arctic environment. The aim of this study is to investigate the production changes related to physical factors such as sea surface temperature (SST) and sea ice concentration (SIC) in the Arctic Ocean. Satellite and reanalysis data were used to conduct research in a wide region. Chlorophyll-a concentration (CHL) data obtained by ocean color sensor observed from the blue-green band was used as one of the indicators for estimating the productivity of the ocean. Two satellite measurements consecutively derived from Sea-Wide Field-of-View Sensor (SeaWiFS) and MODerate Resolution Imaging Spectroradiometer (MODIS) was acquired to observe decadal trends from 1998 to 2016. As the physical factors of the marine environment in the same period, the Optimal Interpolation Sea Surface Temperature (OISST) and the ERA-Interim data of the European Center for Medium-Range Weather Forecasts (ECMWF) were used. Over the two decades, we found the ocean environmental changes in the Arctic Ocean. The variability of CHL showed the increasing trend (0.15 mg m-3) throughout the and feedback on a global scale. In other words, a wide-ranging view (rather than single area or data) is required to understand the Arctic environment. The aim of this study is to investigate the production changes related to physical factors such as sea surface temperature (SST) and sea ice concentration (SIC) in the Arctic Ocean. Satellite and reanalysis data were used to conduct research in a wide region. Chlorophyll-a concentration (CHL) data obtained by ocean color sensor observed from the blue-green band was used as one of the indicators for estimating the productivity of the ocean. Two satellite measurements consecutively derived from Sea-Wide Field-of-View Sensor (SeaWiFS) and MODerate Resolution Imaging Spectroradiometer (MODIS) was acquired to observe decadal trends from 1998 to 2016. As the physical factors of the marine environment in the same period, the Optimal Interpolation Sea Surface Temperature (OISST) and the ERA-Interim data of the European Center for Medium-Range Weather Forecasts (ECMWF) were used. Over the two decades, we found the ocean environmental changes in the Arctic Ocean. The variability of CHL showed the increasing trend (0.15 mg m-3) throughout the