STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA
During spring and summer, melt ponds appear on the sea ice surface in the Arctic and play an important role in sea ice-albedo feedback effect. The melt pond fraction (MPF) can be retrieved using multi-band linear equations, but the calculation is complicated by the ill-conditioned reflectance matrix...
Published in: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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ftcopernicus:oai:publications.copernicus.org:isprs-archives88902 2023-05-15T13:11:21+02:00 STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA Su, J. Yu, P. Qin, Y. Zhang, G. Wang, M. 2020-08-20 application/pdf https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-893-2020 https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B3-2020/893/2020/ eng eng doi:10.5194/isprs-archives-XLIII-B3-2020-893-2020 https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B3-2020/893/2020/ eISSN: 2194-9034 Text 2020 ftcopernicus https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-893-2020 2020-08-24T16:22:15Z During spring and summer, melt ponds appear on the sea ice surface in the Arctic and play an important role in sea ice-albedo feedback effect. The melt pond fraction (MPF) can be retrieved using multi-band linear equations, but the calculation is complicated by the ill-conditioned reflectance matrix. In this paper, we calculated the condition numbers which represent the degree of the ill-conditioned reflectance matrix in the results of the MPF from a MODIS-based unmixing algorithm. The condition number is introduced here as a criterion for the sensitivity of the solution in the system to the error in the input value. By combining 3 bands among 5 visible and near-infrared bands of MODIS data, the results show that the three-band combination with the lowest sensitivity to the error of input is B245. To improve the algorithm, we introduce pre-processing to remove open water from the four surface types and then remove one reflectance equation from the original set. The best two-band combination algorithm is B15. Compared with the discrimination results from Landsat5-TM, the RMS is 0.14. This algorithm is applied in pan-Arctic scale, the MPF results are larger than that from University of Hamburg, especially in the Pacific sector. Text albedo Arctic Sea ice Copernicus Publications: E-Journals Arctic Pacific The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2020 893 898 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
During spring and summer, melt ponds appear on the sea ice surface in the Arctic and play an important role in sea ice-albedo feedback effect. The melt pond fraction (MPF) can be retrieved using multi-band linear equations, but the calculation is complicated by the ill-conditioned reflectance matrix. In this paper, we calculated the condition numbers which represent the degree of the ill-conditioned reflectance matrix in the results of the MPF from a MODIS-based unmixing algorithm. The condition number is introduced here as a criterion for the sensitivity of the solution in the system to the error in the input value. By combining 3 bands among 5 visible and near-infrared bands of MODIS data, the results show that the three-band combination with the lowest sensitivity to the error of input is B245. To improve the algorithm, we introduce pre-processing to remove open water from the four surface types and then remove one reflectance equation from the original set. The best two-band combination algorithm is B15. Compared with the discrimination results from Landsat5-TM, the RMS is 0.14. This algorithm is applied in pan-Arctic scale, the MPF results are larger than that from University of Hamburg, especially in the Pacific sector. |
format |
Text |
author |
Su, J. Yu, P. Qin, Y. Zhang, G. Wang, M. |
spellingShingle |
Su, J. Yu, P. Qin, Y. Zhang, G. Wang, M. STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
author_facet |
Su, J. Yu, P. Qin, Y. Zhang, G. Wang, M. |
author_sort |
Su, J. |
title |
STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
title_short |
STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
title_full |
STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
title_fullStr |
STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
title_full_unstemmed |
STUDY ON ARCTIC MELT POND FRACTION RETRIEVAL ALGORITHM USING MODIS DATA |
title_sort |
study on arctic melt pond fraction retrieval algorithm using modis data |
publishDate |
2020 |
url |
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-893-2020 https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B3-2020/893/2020/ |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
albedo Arctic Sea ice |
genre_facet |
albedo Arctic Sea ice |
op_source |
eISSN: 2194-9034 |
op_relation |
doi:10.5194/isprs-archives-XLIII-B3-2020-893-2020 https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B3-2020/893/2020/ |
op_doi |
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-893-2020 |
container_title |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
container_volume |
XLIII-B3-2020 |
container_start_page |
893 |
op_container_end_page |
898 |
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1766247023882797056 |