WFRF:(Reich Markus)
Search: WFRF:(Reich Markus) > (2020-2024) > Progress and Challe...
- 7 of 15
- Previous record
- Next record
- To hitlist
- Jiang, HuiruGothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences (author)
Progress and Challenges in Studying Regional Permafrost in the Tibetan Plateau Using Satellite Remote Sensing and Models
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- 2020-12-04
- Frontiers Media SA,2020
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/300235
- https://gup.ub.gu.se/publication/300235URI
- https://doi.org/10.3389/feart.2020.560403DOI
Supplementary language notes
- Language:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- © Copyright © 2020 Jiang, Zheng, Yi, Chen, Zhang, Yang and Miller. Recent climate change has induced widespread soil thawing and permafrost degradation in the Tibetan Plateau. Significant advances have been made in better characterizing Tibetan Plateau soil freeze/thaw dynamics, and their interaction with local-scale ecohydrological processes. However, factors such as sparse networks of in-situ sites and short observational period still limit our understanding of the Tibetan Plateau permafrost. Satellite-based optical and infrared remote sensing can provide information on land surface conditions at high spatial resolution, allowing for better representation of spatial heterogeneity in the Tibetan Plateau and further infer the related permafrost states. Being able to operate at “all-weather” conditions, microwave remote sensing has been widely used to retrieve surface soil moisture, freeze/thaw state, and surface deformation, that are critical to understand the Tibetan Plateau permafrost state and changes. However, coarse resolution (>10km) of current passive microwave sensors can add large uncertainties to the above retrievals in the Tibetan Plateau area with high topographic relief. In addition, current microwave remote sensing methods are limited to detections in the upper soil layer within a few centimetres. On the other hand, algorithms that can link surface properties and soil freeze/thaw indices to permafrost properties at regional scale still need improvements. For example, most methods using InSAR (interferometric synthetic aperture radar) derived surface deformation to estimate active layer thickness either ignore the effects of vertical variability of soil water content and soil properties, or use site-specific soil moisture profiles. This can introduce non-negligible errors when upscaled to the broader Tibetan Plateau area. Integrating satellite remote sensing retrievals with process models will allow for more accurate representation of Tibetan Plateau permafrost conditions. However, such applications are still limiting due to a number of factors, including large uncertainties in current satellite products in the Tibetan Plateau area, and mismatch between model input data needs and information provided by current satellite sensors. Novel approaches to combine diverse datasets with models through model initialization, parameterization and data assimilation are needed to address the above challenges. Finally, we call for expansion of local-scale observational network, to obtain more information on deep soil temperature and moisture, soil organic carbon content, and ground ice content.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
- freeze/thaw
- permafrost
- process models
- satellite remote sensing
- Tibetan plateau
Added entries (persons, corporate bodies, meetings, titles ...)
- Zheng, Guanheng (author)
- Yi, Yonghong (author)
- Chen, Deliang,1961Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xchede (author)
- Zhang, Wenjiang (author)
- Yang, Kun (author)
- Miller, Charles E. (author)
- Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)
Related titles
- In:Frontiers in Earth Science: Frontiers Media SA82296-6463
Internet link
Find in a library
- Frontiers in Earth Science (Search for host publication in LIBRIS)
To the university's database
- 7 of 15
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Jiang, Huiru
- Zheng, Guanheng
- Yi, Yonghong
- Chen, Deliang, 1 ...
- Zhang, Wenjiang
- Yang, Kun
- show more...
- Miller, Charles ...
- show less...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Earth and Relate ...
- Articles in the publication
- Frontiers in Ear ...
- By the university
- University of Gothenburg
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
