Assessing the Freeze/Thaw States in Arctic Circle Using FengYun-3E GNOS-R : An Initial Demonstration and Analysis
(2024) In IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 17. p.274-281- Abstract
In this article, we present the first demonstration of the FengYun-3E (FY3E) Global Navigation Satellite System Occultation Sounder II-Reflectometry (GNOS-R) payload's capacity to detect near-surface soil freeze/thaw (F/T) states. This study offers an initial analysis of the F/T retrieval algorithm applied to data collected from the Arctic Circle, underscoring the GNOS-R's potential to deliver long-term near-surface soil F/T products. Data for the period extending from the launch day of GNOS-R (Day of Year (DOY) 179, 2021) to DOY 270 in 2022 were analyzed using the surface reflectivity (SR) ratio factor to discriminate F/T variations. Comparisons were made with soil moisture active passive (SMAP) F/T products, serving as an auxiliary... (More)
In this article, we present the first demonstration of the FengYun-3E (FY3E) Global Navigation Satellite System Occultation Sounder II-Reflectometry (GNOS-R) payload's capacity to detect near-surface soil freeze/thaw (F/T) states. This study offers an initial analysis of the F/T retrieval algorithm applied to data collected from the Arctic Circle, underscoring the GNOS-R's potential to deliver long-term near-surface soil F/T products. Data for the period extending from the launch day of GNOS-R (Day of Year (DOY) 179, 2021) to DOY 270 in 2022 were analyzed using the surface reflectivity (SR) ratio factor to discriminate F/T variations. Comparisons were made with soil moisture active passive (SMAP) F/T products, serving as an auxiliary analysis. We found a strong consistency between SR ratio factor and SMAP F/T values, with the accuracy of the F/T retrieval algorithm exceeding 60%. These findings corroborate the efficacy of the GNOS-R payload aboard FY3E in monitoring F/T patterns at higher latitudes, specifically, the Arctic Circle. The outcomes of this study will be beneficial for future F/T detection efforts using spaceborne Global Navigation Satellite System-Reflectometry payloads.
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- author
- Wu, Xuerui ; Ouyang, Xinqiu ; Wu, Shengli ; Wang, Fang and Duan, Zheng LU
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Arctic circle, freeze/thaw (F/T) retrieval, Global Navigation Satellite System Occultation Sounder II-reflectometry (GNOS-R), Global Navigation Satellite System-Reflectometry (GNSS-R), soil moisture active passive (SMAP)
- in
- IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
- volume
- 17
- pages
- 8 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85179012420
- ISSN
- 1939-1404
- DOI
- 10.1109/JSTARS.2023.3328401
- language
- English
- LU publication?
- yes
- id
- a91ba10f-c7b2-4769-8eb5-197267a87287
- date added to LUP
- 2024-01-31 11:55:54
- date last changed
- 2024-01-31 11:58:01
@article{a91ba10f-c7b2-4769-8eb5-197267a87287, abstract = {{<p>In this article, we present the first demonstration of the FengYun-3E (FY3E) Global Navigation Satellite System Occultation Sounder II-Reflectometry (GNOS-R) payload's capacity to detect near-surface soil freeze/thaw (F/T) states. This study offers an initial analysis of the F/T retrieval algorithm applied to data collected from the Arctic Circle, underscoring the GNOS-R's potential to deliver long-term near-surface soil F/T products. Data for the period extending from the launch day of GNOS-R (Day of Year (DOY) 179, 2021) to DOY 270 in 2022 were analyzed using the surface reflectivity (SR) ratio factor to discriminate F/T variations. Comparisons were made with soil moisture active passive (SMAP) F/T products, serving as an auxiliary analysis. We found a strong consistency between SR ratio factor and SMAP F/T values, with the accuracy of the F/T retrieval algorithm exceeding 60%. These findings corroborate the efficacy of the GNOS-R payload aboard FY3E in monitoring F/T patterns at higher latitudes, specifically, the Arctic Circle. The outcomes of this study will be beneficial for future F/T detection efforts using spaceborne Global Navigation Satellite System-Reflectometry payloads.</p>}}, author = {{Wu, Xuerui and Ouyang, Xinqiu and Wu, Shengli and Wang, Fang and Duan, Zheng}}, issn = {{1939-1404}}, keywords = {{Arctic circle; freeze/thaw (F/T) retrieval; Global Navigation Satellite System Occultation Sounder II-reflectometry (GNOS-R); Global Navigation Satellite System-Reflectometry (GNSS-R); soil moisture active passive (SMAP)}}, language = {{eng}}, pages = {{274--281}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing}}, title = {{Assessing the Freeze/Thaw States in Arctic Circle Using FengYun-3E GNOS-R : An Initial Demonstration and Analysis}}, url = {{http://dx.doi.org/10.1109/JSTARS.2023.3328401}}, doi = {{10.1109/JSTARS.2023.3328401}}, volume = {{17}}, year = {{2024}}, }