Questions tagged [cloudmasking]
The cloudmasking tag has no usage guidance.
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Cloud masking removes buildings and roads
I'm new to GEE and especially the cloud masking algorithms. I am trying to get a cloudless composite image of an area using ee.Algorithms.Landsat.simpleCloudScore(image) but I'm aware that this method ...
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Getting code to export monthly NDVI values
I am trying to export monthly NDVI values for 2007 for my asset 'M2007' which is a mangrove extent shapefile. I've been able to export following the same code, the monthly ndvi values for 2012, apart ...
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Estimate position of shadows cast by clouds in GEE
I have a script for cloud masking that does its job well:
var START_DATE = ee.Date('2022-06-15');
var END_DATE = ee.Date('2022-07-15');
var MAX_CLOUD_PROBABILITY = 65;
var region = region_name
Map....
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Cloud masking for Sentinel-2 Level-1C (Top of Atmosphere) Image Collection
This is my code for loading Sentinel-2 Level-1C (TOA) imagery for my defined AOI. It is working perfectly fine. I just want to do cloud masking here so that the mosaic for every 6 month will be a ...
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s2cloudless sometimes masking out fields
I have implemented the s2cloudless code as written in the official documentation. The only changes I did were:
Skipping the step where the median is calculated (I aim to do a time-series analysis);
...
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81
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Mosaicking cloud removed Sentinel2 imagery using Google Earth Engine [closed]
After struggling the cloud removing part of GEE, I have some questions regarding the mosaicking the result instead of using median().
What I learn about the difference between mosaic and median()/max()...
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156
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Cloud masking problem of Sentinel2 using GEE
I am trying to use Google Earth Engine (GEE) to remove the cloud and replaced it with other sentinel2 images. The codes below start from loading the images, mosaicing them, and applying cloud masking ...
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Masked image collection bands showing "masked" as values in GEE
I am using this cloud masking code (opens into GEE) as it takes cloud shadow into account. When I run it without any editing, it works well. However, I am not interested in the median. I need to ...
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GEE Temporal Gap Filling - Fill Landsat 7 cloud masked pixels to produce one image
Really new to GEE but trying to learn during my PhD...
I am trying to fill the gaps created from cloud masking the Landsat 7 imagery I have. I have filtered by the study area (geometry), the cloud ...
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Removing clouds from Sentinel-2 imagery (Level 2A) using ESA SNAP
I solved my S2 resampling issue with your support. I tried to remove Sentinel-2 (Level 2A) clouds using Idepix but it support to Level 1C.
I want to remove clouds from Sentinel-2 imagery (Level 2A) ...
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Cloud Mask for Landsat 7 Surface Reflectance Collection 2 Level 2 Tier 1
Below is a link to the code I've put together, but I am struggling with creating an updated cloud mask for Landsat collection 2 level 2 tier 1. I want to remove all cloudy pixels and mosaic all the ...
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How can I use Landsat QA band to mask clouds? (collection 2 level 1)
I am using Landsat 8 and 9 collection 2 level 1 data to calculate land surface temperature in ArcGIS. I want to create a cloud-free image using the QA band.
How can I use the QA band to mask any ...
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289
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Mask cloud shadows of Sentinel-2 L1C (TOA reflectance) in GEE
I am trying to automate an analysis in Google Earth Engine using Sentinel-2 imagery. Sentinel-2 L2A (Bottom-of-atmosphere reflectance) imagery is not available in my study area, so I must use L1C (Top-...
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Different methods for masking clouds of Sentinel-2 images in GEE
Working with GEE I noticed that there are different methods for masking cloud pixels in Sentinel-2 images. I would like to clear up some doubts about the different methods. Here are two of the ...
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What is exactly masked by this Landsat 8 QA Pixel cloud masking procedure in GEE?
I'm aware that there are a lot of questions already on this topic, however, I could not find an answer to my problem.
For a project, I need to use a script with a cloud masking procedure written by ...
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Mapping Cloud Correcting Function using Google Earth Engine [closed]
I'm using the JavaScript API of Google Earth Engine. I'm running code given here and described in the developers forum here. The functions supplied work independently of each other, but at the bottom, ...
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Cloud masking and displaying Sentinel 2 image collection in Google Earth Engine
I am trying to use the functions proposed at Creating Sentinel-2 cloud free, cloud-shadow free composite or scene on Google Earth Engine (GEE)? to mask out clouds in a collection and display the ...
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217
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Quality Control process for MODIS Leaf Area Index in GEE
I am trying to mask certain features from MODIS LAI image such as cloud cover and image quality. MODIS LAI has two quality control measures - FparLai_QC and FparExtra_QC. I tried doing it with the ...
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353
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Landsat 8 Collection 2 cloud-free mosaics in Earth Engine
I am trying to get cloud-free mosaics from 6-months periods of Landsat 8 Collection 2 Surface Reflectance.
So far I've used geetools. My code consists of multiple modules so I can't paste it all here, ...
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341
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The QA band of some Landsat 8 images seems to be invalid
I am quite confused about some invalid qa masks.
In some images, the VALUE of the QA band is shown as 21824 (cloudless), but the location is actually covered by cloud. In addition to Landsat images, ...
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841
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Masking clouds on Landsat8 with Python before NDVI [closed]
I'm new to remote sensing and trying to mask clouds with Python. I'm using the same method in Earth Data Science website (https://www.earthdatascience.org/courses/use-data-open-source-python/...
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How to make a cloud-free composite for Landsat 8 Collection 2 surface reflectance in Earth Engine
Suppose I want to create a cloud-free composite of Landsat 8 Collection 2 surface reflectance images for summer 2021 of Washington state, USA. How can I do it?
Here is the code to build the collection ...
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Keeping the property system:time_start after applying a cloud mask to a Sentinel-2 level 2A collection in Google Earth Engine
I am using the following collection: 'COPERNICUS/S2_SR' for a project in Google Earth Engine. I used the suggested code to mask clouds (mask2collection). However when I print some images of the ...
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535
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Landsat 8 Collection 2 anomalies in TIRS1 data (from QA_PIXEL and ST_QA)
I am looking to use Landsat 8 TIRS1 data over a region in the Yukon, Canada and I am getting persistent masked pixels (from the PIXEL_QA or the ST_QA bands) along what appears to be the same Focal ...
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339
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Creating mean image from cloud free images over ROI in GEE for the Landsat SR products
I want to filter all the available cloud-free images of the Landsat series of each year separately and find the mean image in Google Earth Engine. As my ROI is very small, I want images that don't ...
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385
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Masking clouds in S2 image collection and then fill null gaps?
I am trying to mask clouds in a Sentinel 2 image collection following this procedure:
https://developers.google.com/earth-engine/tutorials/community/sentinel-2-s2cloudless#...
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39
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Cloud Mask Assesment without Reference Cloud Mask
We have a cloud mask but we don't have reference data set to assess its accuracy. Without generating a reference dataset by ourselves is it possible to assess the cloud mask's accuracy??
For example; ...
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Generation of snow cover area time series in GEE using MODIS Snow Cover product
My aim is to resample MOD10A1/MYD10A1 to the same scale as that of MOD11A1/MYD11A1, mask the image collection to obtain the best pixels, and finally to obtain the time series plot of the total area ...
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Displaying the 8-Bit image's bits [closed]
I have an 8-Bit cloud mask derived using cloud masking software from Sentinel-2 L1C and want to visualize each bit separately.
Is it possible?
If yes, what kind of software can I perform this task? (...
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Understanding the Cloud Mask in Google Earth Engine
I would like to understand what the logic of this code is (I know that with this code it is possible to mask the pixels classified as cloud and cloud shadow of Landsat 8 images).
I'm still having some ...
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MAJA cloud mask TIFF file comparison with shapefile
I have created could mask using MAJA the result is TIFF file.
I have a reference mask file which is a shapefile.
I would like to see how accurately MAJA can produce the cloud mask as much as possible. ...
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Removing Cloud From Landsat 7/8 using Google Earth Engine?
I am beginner in GEE and trying to apply cloud mask in my study area. I found one code and trying to apply in my area:
link: https://code.earthengine.google.com/31b5b21913eefdc05563dfec72c4ee08
I am ...
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Displaying the cloud free composite of Sentinel2 using s2cloudless in GEE [closed]
I applied the tutorial for 'Sentinel-2 Cloud Masking with s2cloudless' and have this script in GEE:
https://code.earthengine.google.com/c525b3926841d4953e016e64682a4e5c
In this tutorial, I do not ...
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491
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Cloud masking the Landsat-8 Surface Reflectance product without using GEE
I have a collection of Landsat8 Collection2 Level2 images (surface reflectance) and I would like to cloud mask those images somehow, so I can further make a time series of NDVI and other remote sensor ...
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932
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Median vs mean in GEE
I applied the cloud masking on Sentinel 2 imagery in GEE. The original image collection without masking clouds is this:
First I tried the script exactly as written at the bottom of this page Sentinel-...
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