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Multiscale Hydrologic Remote Sensing: Perspectives and Applications
TABLE 9.3
Summary of Studies Focused on Cloud Impact Reduction in MODIS Snow Cover Products
Study
Region, Period
Method
Cloud Coverage before/after 
Cloud Impact Reduction
OA (Clear Sky) before/after 
Cloud Impact Reduction a
Parajka and Blöschl
(2008a)
Austria, 2003–2005
1. Aqua + Terra
2. Spatial filter
3. Fixed temporal filters
59.2%–63%/51.7%(1)–4%(3)
754 stations:
95.1%–95.5%/94.9%–92.1% b
Liang et al. (2008a)
Northern Xinjiang, China,
November–March 2002–2005
Multisensor combination (with
AMSR-E)
61.6%/0%
20 stations:
86.7%/76.1%
Gafurov and
Bárdossy (2009)
Kokcha Basin, Afghanistan,
2003
Six-step procedure: combination
of Aqua + Terra, temporal filter
(±2days), snow line elevation,
spatial filters, and seasonal filter
NA/98%–0%
2 days (artificially masked
with clouds): NA/91.5% and
92.6%
Tong et al. (2009b)
Quesnel River Basin, Canada,
2000–2007
Spatial filter (MOD10A2)
64.2%–71.9%/12.1%–3.6% c
Four stations:
67.3%–90.1%/76.4%–93.1%
Wang et al. (2009)
Northern Xinjiang, China,
September 2003–August 2004
1. Terra + Aqua
2. Flexible temporal filter
42%–47%%/35%–3%
20 stations:
98.8%–99.1%/98.3%–98.8%
Xie et al. (2009)
Colorado Plateau, U.S. and
northern Xinjiang, China,
September 2003–August 2004
Flexible temporal filter of Terra +
Aqua
39.5%–45.1%/30.6%–5.3% (U.S.)
43.7%–46.5%/35.1%–5.8%
(China)
15 stations (U.S.):
~40%–50%/~56%–82%
20 stations:
(China): ~52%–59%/~65%–94%