Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1016/j.isprsjprs.2020.02.007 |
| A global canopy water content product from AVHRR/Metop | |
| Javier Garcia-Haro, Francisco1; Campos-Taberner, Manuel1; Moreno, Alvaro2,5; Torbern Tagesson, Hakan3; Camacho, Fernando4; Martinez, Beatriz1; Sanchez, Sergio1; Piles, Maria2; Camps-Valls, Gustau2; Yebra, Marta6,7; Amparo Gilabert, Maria1 | |
| 通讯作者 | Javier Garcia-Haro, Francisco |
| 来源期刊 | ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
 |
| ISSN | 0924-2716 |
| EISSN | 1872-8235 |
| 出版年 | 2020 |
| 卷号 | 162页码:77-93 |
| 英文摘要 | Spatially and temporally explicit canopy water content (CWC) data are important for monitoring vegetation status, and constitute essential information for studying ecosystem-climate interactions. Despite many efforts there is currently no operational CWC product available to users. In the context of the Satellite Application Facility for Land Surface Analysis (LSA-SAF), we have developed an algorithm to produce a global dataset of CWC based on data from the Advanced Very High Resolution Radiometer (AVHRR) sensor on board Meteorological-Operational (MetOp) satellites forming the EUMETSAT Polar System (EPS). CWC reflects the water conditions at the leaf level and information related to canopy structure. An accuracy assessment of the EPS/AVHRR CWC indicated a close agreement with multi-temporal ground data from SMAPVEX16 in Canada and Dahra in Senegal, with RMSE of 0.19 kg m(-2) and 0.078 kg m(-2) respectively. Particularly, when the Normalized Difference Infrared Index (NDII) was included the algorithm was better constrained in semi-arid regions and saturation effects were mitigated in dense canopies. An analysis of spatial scale effects shows the mean bias error in CWC retrievals remains below 0.001 kg m(-2) when spatial resolutions ranging from 20 m to 1 km are considered. The present study further evaluates the consistency of the LSA-SAF product with respect to the Simplified Level 2 Product Prototype Processor (SL2P) product, and demonstrates its applicability at different spatio-temporal resolutions using optical data from MSI/Sentinel-2 and MODIS/Terra & Aqua. Results suggest that the LSA-SAF EPS/AVHRR algorithm is robust, agrees with the CWC dynamics observed in available ground data, and is also applicable to data from other sensors. We conclude that the EPS/AVHRR CWC product is a promising tool for monitoring vegetation water status at regional and global scales. |
| 英文关键词 | EUMETSAT Polar System (EPS) AVHRR/MetOp Canopy Water Content (CWC) Gaussian Process Regression (GPR) MODIS Sentinel-2 |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | Spain ; Denmark ; USA ; Australia |
| 开放获取类型 | Green Submitted |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000527709200007 |
| WOS关键词 | FUEL MOISTURE-CONTENT ; GROSS PRIMARY PRODUCTION ; BIOPHYSICAL VARIABLES ; BIDIRECTIONAL REFLECTANCE ; GAUSSIAN-PROCESSES ; HYPERSPECTRAL DATA ; AREA INDEX ; VEGETATION ; LEAF ; RETRIEVAL |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS研究方向 | Physical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/314832 |
| 作者单位 | 1.Univ Valencia, Environm Remote Seaming Grp UV ERS, E-46100 Valencia, Spain; 2.Univ Valencia, Image Proc Lab IPL, C Catedratico Jose Beltran 2, Valencia 46980, Spain; 3.Univ Copenhagen, Dept Geosci & Nat Resource Management IGN, Copenhagen, Denmark; 4.Univ Valencia, Earth Observat Lab EOLAB, Parc Cient, Valencia 46980, Spain; 5.Univ Montana, Coll Forestry & Conservat, NTSG, Missoula, MT 59812 USA; 6.Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT, Australia; 7.Bushfire & Nat Hazards Cooperat Res Ctr, Melbourne, Vic, Australia |
| 推荐引用方式 GB/T 7714 | Javier Garcia-Haro, Francisco,Campos-Taberner, Manuel,Moreno, Alvaro,et al. A global canopy water content product from AVHRR/Metop[J],2020,162:77-93. |
| APA | Javier Garcia-Haro, Francisco.,Campos-Taberner, Manuel.,Moreno, Alvaro.,Torbern Tagesson, Hakan.,Camacho, Fernando.,...&Amparo Gilabert, Maria.(2020).A global canopy water content product from AVHRR/Metop.ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,162,77-93. |
| MLA | Javier Garcia-Haro, Francisco,et al."A global canopy water content product from AVHRR/Metop".ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING 162(2020):77-93. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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