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How is cloud masking is done on Landsat 8 surface reflectance?
I want to download cloud-masked Landsat 8 surface reflectance collection from google earth engine. I don’t have any idea how to perform a cloud masking algorithm. here’s my code: This script uses the pre-computed Landsat 8 QA band from CFMask to remove clouds and cloud shadows.
How to test cloud mask in surface reflectance?
I’ve noticed that my cloud mask wasn’t working, so I’ve tried this simple test: https://code.earthengine.google.com/50699c2eaa1a873ccd28f26c583c5a45 But my data uses the Surface Reflectance Landsat 8 imagery so, I just changed to that, and since there’s no fmask band in this, I’ve changed to the ‘pixel_qa’ that also make those distinctions.
Is there a fmask band in surface reflectance?
But my data uses the Surface Reflectance Landsat 8 imagery so, I just changed to that, and since there’s no fmask band in this, I’ve changed to the ‘pixel_qa’ that also make those distinctions. I thought it was the same, but isn’t working. Surface reflectance doesn’t have fmask, neither cfmask ( used for cloud masking in old Landsat scenes).
How many pixels are covered in snow in Landsat 8?
In mountain ranges worldwide, reflectance signatures of nearly every MODIS snow-covered pixel and 93% of Landsat snow-covered pixels indicate the pixel includes other land covers (Selkowitz et al., 2014 ).
What kind of reflectance does Landsat 8 have?
This dataset is the atmospherically corrected surface reflectance from the Landsat 8 OLI/TIRS sensors. These images contain 5 visible and near-infrared (VNIR) bands and 2 short-wave infrared (SWIR) bands processed to orthorectified surface reflectance, and two thermal infrared (TIR) bands processed to orthorectified brightness temperature
How to remove clouds from Sentinel 2 surface reflectance?
Sentinel 2 Surface Reflectance (SR) dataset comes with 2 ways for removing clouds (and the rest of the “bad bits” like cloud shadows, dark pixels, etc).
How does Google Earth Engine create Landsat composites?
For creating simple cloud-free Landsat composites, Earth Engine provides the ee.Algorithms.Landsat.simpleComposite () method. This method selects a subset of scenes at each location, converts to TOA reflectance, applies the simple cloud score and takes the median of the least cloudy pixels.