Phase transition of the arctic oceanic change using multi-satellite measurements

Title
Phase transition of the arctic oceanic change using multi-satellite measurements
Author(s)
김현아; 박진구; 손영백
KIOST Author(s)
Son, Young Baek(손영백)
Publication Year
2017-09-01
Abstract
The Arctic is the beginning of global thermohaline circulation where develops the air-sea heat exchange between extremely cold atmospheres and warm-low-saline water from the Gulf of Mexico. Recently, global climate change has caused a catastrophic event in the Arctic Ocean, directly and indirectly. The air-sea interaction has resulted in a significant reduction in sea-ice extent (SIE), which is assumed to be the result of a positive feedback (accelerationby the sea- ice-albedo). Thus, many scientists are worried about the Arctic environment change, suggesting that the decline in SIE will directly or indirectly affect the biophysical diversity of the Arctic. Based on our background information of the Arctic Ocean, we addressed phase transition of the sea ice and sea surface temperature (SST), and why chlorophyll-a concentration (Chl-a) is increasing with sea ice extent reduction. Various multi-satellite measurements were used to observe the Arctic environmental changes. SST and sea ice concentration (SIC) data were obtained from OISST (1985~2016) and ECMWF (1979~2016), respectively. Chlorophyll-a concentration (Chl-a) was obtained from SeaWiFS and MODIS-Aqua sensor which has continuously observed since 1998. We implemented a statistical analysis such as Empirical Orthogonal Function to calculate the phase transition and focused on the regional distribution rather than merely increasing or decreasing.trophic event in the Arctic Ocean, directly and indirectly. The air-sea interaction has resulted in a significant reduction in sea-ice extent (SIE), which is assumed to be the result of a positive feedback (accelerationby the sea- ice-albedo). Thus, many scientists are worried about the Arctic environment change, suggesting that the decline in SIE will directly or indirectly affect the biophysical diversity of the Arctic. Based on our background information of the Arctic Ocean, we addressed phase transition of the sea ice and sea surface temperature (SST), and why chlorophyll-a concentration (Chl-a) is increasing with sea ice extent reduction. Various multi-satellite measurements were used to observe the Arctic environmental changes. SST and sea ice concentration (SIC) data were obtained from OISST (1985~2016) and ECMWF (1979~2016), respectively. Chlorophyll-a concentration (Chl-a) was obtained from SeaWiFS and MODIS-Aqua sensor which has continuously observed since 1998. We implemented a statistical analysis such as Empirical Orthogonal Function to calculate the phase transition and focused on the regional distribution rather than merely increasing or decreasing.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23853
Bibliographic Citation
BIEN2017, 2017
Publisher
대한여성과학기술인회
Type
Conference
Language
English
Publisher
대한여성과학기술인회
Related Researcher
Research Interests

Ocean Color Remote Sensing,Climate Change,UAV,해양원격탐사,기후변화,무인체계

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