Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data
Sea ice concentration is an important observation element and a necessary input parameter for the numerical prediction of sea ice. In this study, a new method is developed for the inversion of sea ice concentration (SIC) in Liaodong Bay from MODIS data based on the Normalized Difference Water Index...
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ftmdpi:oai:mdpi.com:/2072-4292/14/18/4439/ 2023-08-20T04:09:42+02:00 Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data Wenqi Shi Shuai Yuan Chengyu Liu Yuxian Ma Ning Xu Xianqing Lv 2022-09-06 application/pdf https://doi.org/10.3390/rs14184439 EN eng Multidisciplinary Digital Publishing Institute Environmental Remote Sensing https://dx.doi.org/10.3390/rs14184439 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 18; Pages: 4439 MODIS normalized difference Water Index sea ice concentration Liaodong Bay Text 2022 ftmdpi https://doi.org/10.3390/rs14184439 2023-08-01T06:22:16Z Sea ice concentration is an important observation element and a necessary input parameter for the numerical prediction of sea ice. In this study, a new method is developed for the inversion of sea ice concentration (SIC) in Liaodong Bay from MODIS data based on the Normalized Difference Water Index (NDWI). By comparing the inverted results of the NDWI method and the WU’s methods, as well as observations from six shore-based observation points on the east coast of Liaodong Bay in the winter of 2016/2017 and Landsat 8 OLI data, the method based on NDWI is shown to be a useful tool to estimate the SIC. The SIC obtained by the NDWI method is in good agreement with the survey data. The mean absolute error between the SIC obtained by the NDWI method and visual observation is about 10%. In the comparison data, 92% of the absolute error values of SIC are less than 20%. The average value of the error of the SIC obtained by the NDWI method is 1%, and that of the WU’s method is about −10%, which means the accuracy of SIC obtained by the NDWI method is better. The mean deviation of the error of the SIC obtained by the NDWI method and the WU’s method is about 9% and 13%, which shows a certain improvement in precision. The validation results with the Landsat 8 OLI data show the precision of the SIC obtained by the NDWI method is better than the WU’s method, which is consistent with the validation result of the survey data. Text Sea ice MDPI Open Access Publishing Remote Sensing 14 18 4439 |
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MODIS normalized difference Water Index sea ice concentration Liaodong Bay |
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MODIS normalized difference Water Index sea ice concentration Liaodong Bay Wenqi Shi Shuai Yuan Chengyu Liu Yuxian Ma Ning Xu Xianqing Lv Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
topic_facet |
MODIS normalized difference Water Index sea ice concentration Liaodong Bay |
description |
Sea ice concentration is an important observation element and a necessary input parameter for the numerical prediction of sea ice. In this study, a new method is developed for the inversion of sea ice concentration (SIC) in Liaodong Bay from MODIS data based on the Normalized Difference Water Index (NDWI). By comparing the inverted results of the NDWI method and the WU’s methods, as well as observations from six shore-based observation points on the east coast of Liaodong Bay in the winter of 2016/2017 and Landsat 8 OLI data, the method based on NDWI is shown to be a useful tool to estimate the SIC. The SIC obtained by the NDWI method is in good agreement with the survey data. The mean absolute error between the SIC obtained by the NDWI method and visual observation is about 10%. In the comparison data, 92% of the absolute error values of SIC are less than 20%. The average value of the error of the SIC obtained by the NDWI method is 1%, and that of the WU’s method is about −10%, which means the accuracy of SIC obtained by the NDWI method is better. The mean deviation of the error of the SIC obtained by the NDWI method and the WU’s method is about 9% and 13%, which shows a certain improvement in precision. The validation results with the Landsat 8 OLI data show the precision of the SIC obtained by the NDWI method is better than the WU’s method, which is consistent with the validation result of the survey data. |
format |
Text |
author |
Wenqi Shi Shuai Yuan Chengyu Liu Yuxian Ma Ning Xu Xianqing Lv |
author_facet |
Wenqi Shi Shuai Yuan Chengyu Liu Yuxian Ma Ning Xu Xianqing Lv |
author_sort |
Wenqi Shi |
title |
Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
title_short |
Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
title_full |
Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
title_fullStr |
Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
title_full_unstemmed |
Inversion of Sea Ice Concentration in the Liaodong Bay from MODIS Data |
title_sort |
inversion of sea ice concentration in the liaodong bay from modis data |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14184439 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Remote Sensing; Volume 14; Issue 18; Pages: 4439 |
op_relation |
Environmental Remote Sensing https://dx.doi.org/10.3390/rs14184439 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14184439 |
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Remote Sensing |
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14 |
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18 |
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4439 |
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1774723338705305600 |