Hi!
I realize a time series with MOD09GQ to finally extract index vegetation but there are many many many solutions to create mask cloud and each has his complex methods with personel algorithm. So the first question is :
- Can I used layer QC_250m from MOD09GQ to make mask ? Should it necessary to create shapefile from layer and applicate in surf_b01 or b02 layer ?
Or
- I must used MOD35 but.... BUT... the time including date and hour and they are not the same between both
T_T
Thanks to your rely
best regards :)
Charlène
try to extract Band 4 (QC_250m_1) as a subdataset.
from the documentation:
The QC_250m_1 layer is stored in an efficient bit-encoded manner. The unpack_sds_bits executable from the LDOPE Tools is available to the user community to help parse and interpret this layer.
In addition to data access and transformation processes, AppEEARS also has the capability to unpack and interpret the quality layer.
The QA bit flags for the QC_250m_1 layer is provided in Table 8 of the User Guide on page 19.
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