Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rse.2011.03.020 |
The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle | |
Le Toan, T.1; Quegan, S.2; Davidson, M. W. J.; Balzter, H.3; Paillou, P.4; Papathanassiou, K.5; Plummer, S.; Rocca, F.6; Saatchi, S.7; Shugart, H.8; Ulander, L.9 | |
通讯作者 | Le Toan, T. |
来源期刊 | REMOTE SENSING OF ENVIRONMENT |
ISSN | 0034-4257 |
EISSN | 1879-0704 |
出版年 | 2011 |
卷号 | 115期号:11页码:2850-2860 |
英文摘要 | In response to the urgent need for improved mapping of global biomass and the lack of any current space systems capable of addressing this need, the BIOMASS mission was proposed to the European Space Agency for the third cycle of Earth Explorer Core missions and was selected for Feasibility Study (Phase A) in March 2009. The objectives of the mission are 1) to quantify the magnitude and distribution of forest biomass globally to improve resource assessment, carbon accounting and carbon models, and 2) to monitor and quantify changes in terrestrial forest biomass globally, on an annual basis or better, leading to improved estimates of terrestrial carbon sources (primarily from deforestation); and terrestrial carbon sinks due to forest regrowth and afforestation. These science objectives require the mission to measure above-ground forest biomass from 70 degrees N to 56 degrees Sat spatial scale of 100-200 m, with error not exceeding +/- 20% or +/- 10 t ha(-1) and forest height with error of +/- 4 m. To meet the measurement requirements, the mission will carry a P-Band polarimetric SAR (centre frequency 435 MHz with 6 MHz bandwidth) with interferometric capability, operating in a dawn-dusk orbit with a constant incidence angle (in the range of 25 degrees-35 degrees) and a 25-45 day repeat cycle. During its 5-year lifetime, the mission will be capable of providing both direct measurements of biomass derived from intensity data and measurements of forest height derived from polarimetric interferometry. The design of the BIOMASS mission spins together two main observational strands: (1) the long heritage of airborne observations in tropical, temperate and boreal forest that have demonstrated the capabilities of P-band SAR for measuring forest biomass; (2) new developments in recovery of forest structure including forest height from Pol-InSAR, and, crucially, the resistance of P-band to temporal decorrelation, which makes this frequency uniquely suitable for biomass measurements with a single repeat-pass satellite. These two complementary measurement approaches are combined in the single BIOMASS sensor, and have the satisfying property that increasing biomass reduces the sensitivity of the former approach while increasing the sensitivity of the latter. This paper surveys the body of evidence built up over the last decade, from a wide range of airborne experiments, which illustrates the ability of such a sensor to provide the required measurements. At present, the BIOMASS P-band radar appears to be the only sensor capable of providing the necessary global knowledge about the world’s forest biomass and its changes. In addition, this first chance to explore the Earth’s environment with a long wavelength satellite SAR is expected to make yield new information in a range of geoscience areas, including subsurface structure in arid lands and polar ice, and forest inundation dynamics. (C) 2011 Elsevier Inc. All rights reserved. |
英文关键词 | Forest biomass Carbon cycle P-band SAR Satellite mission ESA Earth Explorer |
类型 | Article |
语种 | 英语 |
国家 | France ; England ; Germany ; Italy ; USA ; Sweden |
收录类别 | SCI-E |
WOS记录号 | WOS:000295501400010 |
WOS关键词 | POLARIMETRIC SAR INTERFEROMETRY ; ORBITAL IMAGING RADAR ; TROPICAL RAIN-FOREST ; L-BAND ; P-BAND ; SPATIAL-DISTRIBUTION ; FARADAY-ROTATION ; PINE FOREST ; AMAZON ; MODEL |
WOS类目 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/170321 |
作者单位 | 1.Univ Toulouse 3, Ctr Etud Spatiales Biosphere, CNRS, CNES,IRD, F-31062 Toulouse, France; 2.Univ Sheffield, CTCD, Sheffield S10 2TN, S Yorkshire, England; 3.Univ Leicester, Ctr Environm Res CERES, Leicester LE1 7RH, Leics, England; 4.Univ Bordeaux 1, Observ Aquitain Sci Univers, F-33405 Talence, France; 5.German Aerosp Ctr eV DLR, Wessling, Germany; 6.Politecn Milan, Dipartimento Elettron & Informaz, Milan, Italy; 7.CALTECH, Jet Prop Lab, Pasadena, CA USA; 8.Univ Virginia, Charlottesville, VA USA; 9.FOI, Dept Radar Syst, Linkoping, Sweden |
推荐引用方式 GB/T 7714 | Le Toan, T.,Quegan, S.,Davidson, M. W. J.,et al. The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle[J]. French National Research Institute for Sustainable Development,2011,115(11):2850-2860. |
APA | Le Toan, T..,Quegan, S..,Davidson, M. W. J..,Balzter, H..,Paillou, P..,...&Ulander, L..(2011).The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle.REMOTE SENSING OF ENVIRONMENT,115(11),2850-2860. |
MLA | Le Toan, T.,et al."The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle".REMOTE SENSING OF ENVIRONMENT 115.11(2011):2850-2860. |
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