globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13787
论文题名:
Inconsistencies of interannual variability and trends in long-term satellite leaf area index products
作者: Jiang C.; Ryu Y.; Fang H.; Myneni R.; Claverie M.; Zhu Z.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期:10
起始页码: 4133
结束页码: 4146
语种: 英语
英文关键词: GLASS ; GLOBMAP ; intercomparison ; LAI3g ; leaf area index (LAI) ; TCDR ; time series
英文摘要: Understanding the long-term performance of global satellite leaf area index (LAI) products is important for global change research. However, few effort has been devoted to evaluating the long-term time-series consistencies of LAI products. This study compared four long-term LAI products (GLASS, GLOBMAP, LAI3g, and TCDR) in terms of trends, interannual variabilities, and uncertainty variations from 1982 through 2011. This study also used four ancillary LAI products (GEOV1, MERIS, MODIS C5, and MODIS C6) from 2003 through 2011 to help clarify the performances of the four long-term LAI products. In general, there were marked discrepancies between the four long-term LAI products. During the pre-MODIS period (1982–1999), both linear trends and interannual variabilities of global mean LAI followed the order GLASS>LAI3g>TCDR>GLOBMAP. The GLASS linear trend and interannual variability were almost 4.5 times those of GLOBMAP. During the overlap period (2003–2011), GLASS and GLOBMAP exhibited a decreasing trend, TCDR no trend, and LAI3g an increasing trend. GEOV1, MERIS, and MODIS C6 also exhibited an increasing trend, but to a much smaller extent than that from LAI3g. During both periods, the R2 of detrended anomalies between the four long-term LAI products was smaller than 0.4 for most regions. Interannual variabilities of the four long-term LAI products were considerably different over the two periods, and the differences followed the order GLASS>LAI3g>TCDR>GLOBMAP. Uncertainty variations quantified by a collocation error model followed the same order. Our results indicate that the four long-term LAI products were neither intraconsistent over time nor interconsistent with each other. These inconsistencies may be due to NOAA satellite orbit changes and MODIS sensor degradation. Caution should be used in the interpretation of global changes derived from the four long-term LAI products. © 2017 John Wiley & Sons Ltd
资助项目: This research was funded by the National Research Foundation of Korea (NRF-2014R1A2A1A11051134). H. F. was supported by the National Key Research and Development Program of China (2016YFA0600201). We thank GLCF (http://glcf.umd.edu/), Global mapping (http://www.globalmapping.org/), CLIVEG (http://cliveg.bu.edu/), NCDC (https://www.ncdc.noaa.gov/), Copernicus (http://www.copernicus.eu/), EOC (https://geoservice.dlr.de/web/), and LAADS (https://ladsweb.nascom.nasa.gov/) teams who facilitated the distribution of GLASS, GLOBMAP, LAI3g, TCDR, GEOV1, MERIS, and MODIS global satellite LAI products. The authors declare no conflict of interest. English proofread was supported by Research Institute of Agriculture and Life Sciences at Seoul National University.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60800
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: Brain Korea 21 Plus Team, Seoul National University, Seoul, South Korea; Department of Landscape Architecture and Rural Systems Engineering, Seoul National University, Seoul, South Korea; Interdisciplinary Program in Agricultural and Forest Meteorology, Seoul National University, Seoul, South Korea; Interdisciplinary Program in Landscape Architecture, Seoul National University, Seoul, South Korea; LREIS, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Department of Earth and Environment, Boston University, Boston, MA, United States; Department of Geographical Sciences, University of Maryland, College Park, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China

Recommended Citation:
Jiang C.,Ryu Y.,Fang H.,et al. Inconsistencies of interannual variability and trends in long-term satellite leaf area index products[J]. Global Change Biology,2017-01-01,23(10)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Jiang C.]'s Articles
[Ryu Y.]'s Articles
[Fang H.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Jiang C.]'s Articles
[Ryu Y.]'s Articles
[Fang H.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Jiang C.]‘s Articles
[Ryu Y.]‘s Articles
[Fang H.]‘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.