![]() ![]() If bit 0 is set (has the value 1) then the pixel value contains a cosmetic value rather than a measured value Briefly each bit corresponds to a particular cloud test or other feature associated with a given pixel. The properties (or metadata attributes) provide a legend for the cloud flags that have been set for each pixel in the 11µm Tb image. Select Open Properties to display the properties of this flag data. We can use the AATSR cloud_flag_ bitfield provided with the GBTR data set to check and mask out clouds flagged by the AATSR data processor cloud flagging testsĬlick once on the cloud_flags_nadir data set in the right frame of the AATSR file-structure window, and right-click to obtain a pop-up menu. ![]() However there are several interesting areas of cloud that could be identified. The AATSR 11µm Tb image data set we are currently using is rich in detail and is relatively cloud free. Creating cloud and land masks Applying the flags Assessing the results ![]()
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