Cloud-clearing techniques over land for land-surface temperature retrieval from the Advanced Along-Track Scanning Radiometer
Cloud-clearing techniques over land for land-surface temperature retrieval from the Advanced Along-Track Scanning Radiometer
复制标题
陆地上的云清除技术,用于通过高级沿轨扫描辐射计反演地表温度
DOI:
10.1080/01431161.2014.907941
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发表时间:
2014
影响因子:
3.4
通讯作者:
Bulgin C
中科院分区:
文献类型:
--
作者:
Bulgin C
We present five new cloud detection algorithms over land based on dynamic threshold or Bayesian techniques, applicable to the Advanced Along-Track Scanning Radiometer (AATSR) instrument and compare these to the standard threshold-based SADIST cloud detection scheme. We use a manually classified dataset as a reference to assess algorithm performance and quantify the impact of each cloud detection scheme on land-surface temperature (LST) retrieval. The use of probabilistic Bayesian cloud detection methods improves algorithm true skill scores by 8–9% over SADIST (maximum score of 77.93% compared with 69.27%). We present an assessment of the impact of imperfect cloud masking, in relation to the reference cloud mask, on the retrieved AATSR LST imposing a 2 K tolerance over a 3 × 3 pixel domain. We find an increase of 5–7% in the observations falling within this tolerance when using Bayesian methods (maximum of 92.02% compared with 85.69%). We also demonstrate that the use of dynamic thresholds in the tests employed by SADIST can significantly improve performance, applicable to cloud-test data to be provided by the Sea and Land Surface Temperature Radiometer (SLSTR) due to be launched on the Sentinel 3 mission (estimated 2014).
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影响因子:
13.5
作者:
Embury O
通讯作者:
Embury O
影响因子:
13.5
作者:
S. Mackie
通讯作者:
S. Mackie
影响因子:
3.4
作者:
S. Mackie;C. Merchant;Owen Embury;P. Francis
通讯作者:
P. Francis
影响因子:
13.5
作者:
Bulgin C
通讯作者:
Bulgin C
影响因子:
13.5
作者:
James J. Simpson;Andrew H. Schmidt;Andrew Harris
通讯作者:
Andrew Harris