Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level
Synthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored. This study investigates the integrated application of Ice, Cloud, and land Elevation Satellite (ICESat),...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17538947.2023.2166134 |
| _version_ | 1827811118208253952 |
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| author | Ye Feng Leiku Yang Pengfei Zhan Shuangxiao Luo Tan Chen Kai Liu Chunqiao Song |
| author_facet | Ye Feng Leiku Yang Pengfei Zhan Shuangxiao Luo Tan Chen Kai Liu Chunqiao Song |
| author_sort | Ye Feng |
| collection | DOAJ |
| description | Synthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored. This study investigates the integrated application of Ice, Cloud, and land Elevation Satellite (ICESat), ICESat-2, and CryoSat-2 missions to provide consecutive lake level series in 2003–2020. The sample comprises 48 lakes in the world with gauge-based or Hydroweb water level data. The CryoSat-2 data are first adjusted to the ICESat-2 height reference based on the mean values of their monthly water level difference during their overlapping period (2018–2020). Then, the corrected CryoSat-2 data are used to link the ICESat and ICESat-2 data. Results show that in the sample lakes, the deviations between CryoSat-2 and ICESat-2 data vary and range from −0.78 m to 0.13 m. The data quality of the synthesized time series is evaluated by comparing against the validation data, with an average R2 of 0.84. This study shows that CryoSat-2 has the potential of filling the gap between ICESat and ICESat-2. The three altimeters can be expected to integrate effectively for monitoring lake water level changes in the past two decades. |
| first_indexed | 2024-03-11T23:00:37Z |
| format | Article |
| id | doaj.art-8b5192c0b4294cf297bbb98cc9ce6d53 |
| institution | Directory Open Access Journal |
| issn | 1753-8947 1753-8955 |
| language | English |
| last_indexed | 2024-03-11T23:00:37Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj.art-8b5192c0b4294cf297bbb98cc9ce6d532023-09-21T14:57:12ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552023-12-0116118320910.1080/17538947.2023.21661342166134Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake levelYe Feng0Leiku Yang1Pengfei Zhan2Shuangxiao Luo3Tan Chen4Kai Liu5Chunqiao Song6Henan Polytechnic UniversityHenan Polytechnic UniversityChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesSynthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored. This study investigates the integrated application of Ice, Cloud, and land Elevation Satellite (ICESat), ICESat-2, and CryoSat-2 missions to provide consecutive lake level series in 2003–2020. The sample comprises 48 lakes in the world with gauge-based or Hydroweb water level data. The CryoSat-2 data are first adjusted to the ICESat-2 height reference based on the mean values of their monthly water level difference during their overlapping period (2018–2020). Then, the corrected CryoSat-2 data are used to link the ICESat and ICESat-2 data. Results show that in the sample lakes, the deviations between CryoSat-2 and ICESat-2 data vary and range from −0.78 m to 0.13 m. The data quality of the synthesized time series is evaluated by comparing against the validation data, with an average R2 of 0.84. This study shows that CryoSat-2 has the potential of filling the gap between ICESat and ICESat-2. The three altimeters can be expected to integrate effectively for monitoring lake water level changes in the past two decades.http://dx.doi.org/10.1080/17538947.2023.2166134lake levelcryosat-2icesaticesat-2satellite altimetry |
| spellingShingle | Ye Feng Leiku Yang Pengfei Zhan Shuangxiao Luo Tan Chen Kai Liu Chunqiao Song Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level International Journal of Digital Earth lake level cryosat-2 icesat icesat-2 satellite altimetry |
| title | Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level |
| title_full | Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level |
| title_fullStr | Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level |
| title_full_unstemmed | Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level |
| title_short | Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level |
| title_sort | synthesis of the icesat icesat 2 and cryosat 2 observations to reconstruct time series of lake level |
| topic | lake level cryosat-2 icesat icesat-2 satellite altimetry |
| url | http://dx.doi.org/10.1080/17538947.2023.2166134 |
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