globalchange  > 气候减缓与适应
DOI: 10.3390/rs11010009
WOS记录号: WOS:000457935600009
论文题名:
Sea Ice Albedo from MISR and MODIS: Production, Validation, and Trend Analysis
作者: Kharbouche, Said; Muller, Jan-Peter
通讯作者: Muller, Jan-Peter
刊名: REMOTE SENSING
ISSN: 2072-4292
出版年: 2019
卷: 11, 期:1
语种: 英语
英文关键词: albedo ; MISR ; MODIS ; Sea ice ; climate change ; calibration
WOS关键词: BIDIRECTIONAL REFLECTANCE ; CLIMATE-CHANGE ; CLOUD ; RADIATION ; THICKNESS ; LAND ; FEEDBACK
WOS学科分类: Remote Sensing
WOS研究方向: Remote Sensing
英文摘要:

The Multi-angle Imaging SpectroRadiometer (MISR) sensor onboard the Terra satellite provides high accuracy albedo products. MISR deploys nine cameras each at different view angles, which allow a near-simultaneous angular sampling of the surface anisotropy. This is particularly important to measure the near-instantaneous albedo of dynamic surface features such as clouds or sea ice. However, MISR's cloud mask over snow or sea ice is not yet sufficiently robust because MISR's spectral bands are only located in the visible and the near infrared. To overcome this obstacle, we performed data fusion using a specially processed MISR sea ice albedo product (that was generated at Langley Research Center using Rayleigh correction) combining this with a cloud mask of a sea ice mask product, MOD29, which is derived from the MODerate Resolution Imaging Spectroradiometer (MODIS), which is also, like MISR, onboard the Terra satellite. The accuracy of the MOD29 cloud mask has been assessed as >90% due to the fact that MODIS has a much larger number of spectral bands and covers a much wider range of the solar spectrum. Four daily sea ice products have been created, each with a different averaging time window (24 h, 7 days, 15 days, 31 days). For each time window, the number of samples, mean and standard deviation of MISR cloud-free sea ice albedo is calculated. These products are publicly available on a predefined polar stereographic grid at three spatial resolutions (1 km, 5 km, 25 km). The time span of the generated sea ice albedo covers the months between March and September of each year from 2000 to 2016 inclusive. In addition to data production, an evaluation of the accuracy of sea ice albedo was performed through a comparison with a dataset generated from a tower based albedometer from NOAA/ESRL/GMD/GRAD. This comparison confirms the high accuracy and stability of MISR's sea ice albedo since its launch in February 2000. We also performed an evaluation of the day-of-year trend of sea ice albedo between 2000 and 2016, which confirm the reduction of sea ice shortwave albedo with an order of 0.4-1%, depending on the day of year and the length of observed time window.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/126906
Appears in Collections:气候减缓与适应

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作者单位: Univ Coll London, Mullard Space Sci Lab, Imaging Grp, Dept Space & Climate Phys, Holmbury St Mary, Dorking RH5 6NT, Surrey, England

Recommended Citation:
Kharbouche, Said,Muller, Jan-Peter. Sea Ice Albedo from MISR and MODIS: Production, Validation, and Trend Analysis[J]. REMOTE SENSING,2019-01-01,11(1)
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