globalchange  > 气候变化事实与影响
DOI: 10.1080/01431161.2019.1597307
WOS记录号: WOS:000465761700001
论文题名:
A continuous global record of near-surface soil freeze/thaw status from AMSR-E and AMSR2 data
作者: Hu, Tongxi1; Zhao, Tianjie2; Zhao, Kaiguang1,3; Shi, Jiancheng2
通讯作者: Zhao, Tianjie
刊名: INTERNATIONAL JOURNAL OF REMOTE SENSING
ISSN: 0143-1161
EISSN: 1366-5901
出版年: 2019
卷: 40, 期:18, 页码:6993-7016
语种: 英语
WOS关键词: BRIGHTNESS TEMPERATURES ; FROZEN SOIL ; MICROWAVE ; THAW ; INTERCALIBRATION ; LANDSCAPE ; ALGORITHMS ; PERMAFROST ; RESPONSES ; DYNAMICS
WOS学科分类: Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向: Remote Sensing ; Imaging Science & Photographic Technology
英文摘要:

Long term and consistent records of near-surface soil freeze/thaw (F/T) status are required for understanding hydrological, ecological, and biogeochemical responses of land surface to global warming. To create such a record, we compiled and inter-calibrated satellite observations from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) and its successor, AMSR2, using linear regression models, and then applied a discriminant algorithm to the calibrated observations to map global F/T status from 2002 to 2018. The new global F/T dataset was rigorously assessed using in situ air and surface temperatures, and modelled soil temperature. Results show that agreement between remotely sensed F/T status and that determined by in situ or modelled temperature exceeds 85% and 79% for ascending and descending orbits, respectively. Moreover, consistency between the F/T datasets derived from two sensors is around 0.8 after calibration, in nonoverlapping time frames. With such an accuracy and consistency, we calculated frost days and frost trends using the F/T dataset. The mean annual number of frost days of high northern latitudes (>45 degrees N) is 279.2 +/- 44.1 days. Based on Mann-Kendall's tau-b test, 7.7% of global lands show a significant warming trend, and most of which are concentrated in the Western United States, Northern and Eastern Canada, Northern Europe and Western China. Such a spatial distribution was found to be consistent with the global land surface temperature anomalies trend from 2002 to 2018. Both the results of applications and favourable accuracy indicate the potential of this long, consistent F/T record to track global temperature change.


Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132495
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: 1.Ohio State Univ, Environm Sci Grad Program, Columbus, OH 43210 USA
2.Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth, Beijing 100101, Peoples R China
3.Ohio State Univ, OARDC, Sch Environm & Nat Resources, Columbus, OH 43210 USA

Recommended Citation:
Hu, Tongxi,Zhao, Tianjie,Zhao, Kaiguang,et al. A continuous global record of near-surface soil freeze/thaw status from AMSR-E and AMSR2 data[J]. INTERNATIONAL JOURNAL OF REMOTE SENSING,2019-01-01,40(18):6993-7016
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Hu, Tongxi]'s Articles
[Zhao, Tianjie]'s Articles
[Zhao, Kaiguang]'s Articles
百度学术
Similar articles in Baidu Scholar
[Hu, Tongxi]'s Articles
[Zhao, Tianjie]'s Articles
[Zhao, Kaiguang]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Hu, Tongxi]‘s Articles
[Zhao, Tianjie]‘s Articles
[Zhao, Kaiguang]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.