Arid
DOI10.3390/rs10060848
A Multisensor Approach to Global Retrievals of Land Surface Albedo
Riihela, Aku1; Manninen, Terhikki1; Key, Jeffrey2; Sun, Qingsong3; Sutterlin, Melanie4; Lattanzio, Alessio5; Schaaf, Crystal3
通讯作者Riihela, Aku
来源期刊REMOTE SENSING
ISSN2072-4292
出版年2018
卷号10期号:6
英文摘要

Satellite-based retrievals offer the most cost-effective way to comprehensively map the surface albedo of the Earth, a key variable for understanding the dynamics of radiative energy interactions in the atmosphere-surface system. Surface albedo retrievals have commonly been designed separately for each different spaceborne optical imager. Here, we introduce a novel type of processing framework that combines the data from two polar-orbiting optical imager families, the Advanced Very High-Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS). The goal of the paper is to demonstrate that multisensor albedo retrievals can provide a significant reduction in the sampling time required for a robust and comprehensive surface albedo retrieval, without a major degradation in retrieval accuracy, as compared to state-of-the-art single-sensor retrievals. We evaluated the multisensor retrievals against reference in situ albedo measurements and compare them with existing datasets. The results show that global land surface albedo retrievals with a sampling period of 10 days can offer near-complete spatial coverage, with a retrieval bias mostly comparable to existing single sensor datasets, except for bright surfaces (deserts and snow) where the retrieval framework shows degraded performance because of atmospheric correction design compromises. A level difference is found between the single sensor datasets and the demonstrator developed here, pointing towards a need for further work in the atmospheric correction, particularly over bright surfaces, and inter-sensor radiance homogenization. The introduced framework is expandable to include other sensors in the future.


英文关键词surface albedo retrieval multisensor evaluation land surface
类型Article
语种英语
国家Finland ; USA ; Switzerland ; Germany
收录类别SCI-E
WOS记录号WOS:000436561800042
WOS关键词REMOTE-SENSING DATA ; SNOW-FREE ALBEDO ; BIDIRECTIONAL REFLECTANCE ; DATA RECORD ; PART I ; ATMOSPHERIC CORRECTION ; EARTHS SURFACE ; SATELLITE DATA ; NOAA AVHRR ; DATA SETS
WOS类目Remote Sensing
WOS研究方向Remote Sensing
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212630
作者单位1.Finnish Meteorol Inst, Erik Palmenin Aukio 1, FI-00560 Helsinki, Finland;
2.NOAA, 1225 West Dayton St, Madison, WI 53706 USA;
3.Univ Massachusetts, Sch Environm, Boston, MA 02125 USA;
4.Univ Bern, Inst Geog, Hallerstr 12, CH-3012 Bern, Switzerland;
5.EUMETSAT, Eumetsat Allee 1, D-64295 Darmstadt, Germany
推荐引用方式
GB/T 7714
Riihela, Aku,Manninen, Terhikki,Key, Jeffrey,et al. A Multisensor Approach to Global Retrievals of Land Surface Albedo[J],2018,10(6).
APA Riihela, Aku.,Manninen, Terhikki.,Key, Jeffrey.,Sun, Qingsong.,Sutterlin, Melanie.,...&Schaaf, Crystal.(2018).A Multisensor Approach to Global Retrievals of Land Surface Albedo.REMOTE SENSING,10(6).
MLA Riihela, Aku,et al."A Multisensor Approach to Global Retrievals of Land Surface Albedo".REMOTE SENSING 10.6(2018).
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