All Questions
Tagged with google-earth-engine cloud-cover
70
questions
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31
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Extracting QA bits for cloud mask with MOD09GA state 1km band using Google Earth Engine
I'm working on code for detecting fog and low stratus (FLS) using the QA bits from the state_1km band of the MOD09GA.061 product. I'm trying to select pixels classified as clouds (bit 0-1 Cloud State: ...
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votes
1
answer
14
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GEE - Modifying x-axis to represent time of day or day of year
I've been trying to create a graph in GEE that depicts cloud coverage % over either time of day or day of year. I've been able to make the graph, but the x-axis is labeled by "COPERNICUS/...
- 1
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2
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294
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Inaccurate cloud shadow masks when using Earth Engine's script for Sentinel 2
I am currently evaluating my cloud shadow masking options for Sentinel-2 data. One of the options I am exploring is using an example script published by Google that projects cloud shadow locations ...
1
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524
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Google Earth Engine cloud cover sorting and area of interest
I see in a lot of examples that people are sorting a stack by cloud cover and then pick the first image.
Example:
image = image.filterDate('2022-01-01', '2023-01-01')
.filterBounds(...
- 6,647
1
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2
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495
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Get a specific number of images from a sorted image collection in Google Earth Engine
I want to export the first 10 images of a Landsat image collection sorted based on the "CLOUD_COVER_LAND" property. I know how to extract the least cloudy image of the sorted collection by ...
- 43
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25
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1998 smoke imagery in Alaska
I am trying to access smoke/cloud imagery above the Alaska region during August of 1998. I would like to use GEE, but I haven't been able to find a dataset with good coverage. I have looked at Landsat ...
- 11
1
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0
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1k
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Earth Engine: Landsat 8 QA_PIXEL issues with cloud, shadow, and land masking
Using the QA_PIXEL band in Landsat 8 to mask out clouds, cloud shadow, and land often masks out large areas of water. The QA_PIXEL band identifies these water areas as land and cloud shadow, when this ...
- 151
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391
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Cloud filtering Landsat collection 2 time series by region
I'm working on creating an NDVI time series and I'm trying to filter out clouds over a specific region so I wont get huge gaps in the time series.
Is there a way to reduce the extent by cloud percent?
...
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1
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606
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Cloud filtering Landsat collection 2 over specific regions
I'm trying to filter clouds over a specific region for an NDVI time series using Landsat collection 2.
I tried filtering with simple cloud score but it doesn't seem to work (maybe because there is no ...
1
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2
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690
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Why do I get an error when applying getInfo() in Google Earth Engine?
I'm working in an undergraduate project and just started using Google Earth Engine. Firstly, I need to filter some Sentinel-2 MSI images that cover my area of interest (a watershed with 55 km²) from ...
- 11
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161
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Classify unclassified patches that were left after cloud removal for Landsat 8, using Google Earth Engine
I am trying to classify my study area, using Random Forest using Landsat 8 dataset of GEE. The first problem that I came across was clouds, so to remove them I used as follows
var mask = require('...
- 119
4
votes
1
answer
1k
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Cloud Shadow Removal for Sentinel-2
I am trying to classify my study area with a RandomForest classifier, using Sentinel-2 Surface Reflectance images. This classification gave me an accuracy of about 87%. I calculated the misclassified ...
- 119
0
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2
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794
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Getting Cloudfree image for small area (Sentinel-2) using Google Earth Engine
I am trying to get a cloudfree image from Sentinel-2 for multiple small areas (circles with a radius of 20km) in Ghana, a very cloudy area. Using the standard algorithms (median image, filter for ...
- 21
3
votes
1
answer
3k
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Filtering Sentinel2 image collection by cloud coverage over specific polygon
I am pretty new to GEE.
My task is to get all Sentinel 2 images from a specific time. Then I want to filter this collection by a maximum cloud coverage over an area of interest, which is imported ...
- 73
2
votes
1
answer
876
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How can I get the image with less cloud coverage over a ROI in a time range with Sentinel 2?
I am trying to compute a script to get the cleanest image of Sentinel 2 in a prescribed time range.
Currently I tried with 2 approaches: a rough one and an automatic one, but I get two different ...
- 21