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Detection of Arctic Summer Melt Ponds Using ICESat-2 Altimetry Data

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dc.contributor.authorHan, Daehyeon-
dc.contributor.authorKim, Young Jun-
dc.contributor.authorJung, Sihun-
dc.contributor.authorSim, Seongmun-
dc.contributor.authorKim, Woohyeok-
dc.contributor.authorJang, Eunna-
dc.contributor.authorIm, Jungho-
dc.contributor.authorKim, Hyun-Cheol-
dc.date.accessioned2022-07-07T02:18:10Z-
dc.date.available2022-07-07T02:18:10Z-
dc.date.issued2021-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/13577-
dc.description.abstractAs the Arctic melt ponds play an important role in determining the interannual variation of the sea ice extent and changes in the Arctic environment, it is crucial to monitor the Arctic melt ponds with high accuracy. Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2), which is the NASA's latest altimeter satellite based on the green laser (532 nm), observes the global surface elevation. When compared to the CryoSat-2 altimetry satellite whose along-track resolution is 250 m, ICESat-2 is highly expected to provide much more detailed information about Arctic melt ponds thanks to its high alongtrack resolution of 70 cm. The basic products of ICESat-2 are the surface height and the number of reflected photons. To aggregate the neighboring information of a specific ICESat-2 photon, the segments of photons with 10 m length were used. The standard deviation of the height and the total number of photons were calculated for each segment. As the melt ponds have the smoother surface than the sea ice, the lower variation of the height over melt ponds can make the melt ponds distinguished from the sea ice. When the melt ponds were extracted, the number of photons per segment was used to classify the melt ponds covered with open-water and specular ice. As photons are much more absorbed in the water-covered melt ponds than the melt ponds with the specular ice, the number of photons per segment can distinguish the water- and ice-covered ponds. As a result, the suggested melt pond detection method was able to classify the sea ice, water-covered melt ponds, and ice-covered melt ponds. A qualitative analysis was conducted using the Sentinel-2 optical imagery. The suggested method successfully classified the water- and ice-covered ponds which were difficult to distinguish with Sentinel-2 optical images. Lastly, the pros and cons of the melt pond detection using satellite altimetry and optical images were discussed.en_US
dc.languageKoreanen_US
dc.language.isokoen_US
dc.subjectScience & Technology - Other Topicsen_US
dc.subject.classification기타()en_US
dc.titleDetection of Arctic Summer Melt Ponds Using ICESat-2 Altimetry Dataen_US
dc.title.alternativeICESat-2 고도계 자료를 활용한 여름철 북극 융빙호 탐지en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationHan, Daehyeon, et al. 2021. "Detection of Arctic Summer Melt Ponds Using ICESat-2 Altimetry Data". <em>대한원격탐사학회지</em>, 37(5-1): 1177-1186.-
dc.citation.title대한원격탐사학회지en_US
dc.citation.volume37en_US
dc.citation.number5-1en_US
dc.identifier.doi10.7780/kjrs.2021.37.5.1.27-
dc.citation.startPage1177en_US
dc.citation.endPage1186en_US
dc.description.articleClassificationKCI등재-
dc.description.jcrRateJCR 2019:0en_US
dc.subject.keywordICESat-2en_US
dc.subject.keywordSea iceen_US
dc.subject.keywordMelt ponden_US
dc.subject.keywordAltimetryen_US
dc.subject.keywordPhoton heighten_US
dc.subject.keywordPhoton counten_US
dc.identifier.localId2021-0260-
dc.identifier.scopusid2-s2.0-85119160076-
Appears in Collections  
2021-2021, Study on remote sensing for quantitative analysis of changes in the Arctic cryosphere (21-21) / Kim, Hyun-cheol (PE21040)
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