Questions tagged [sentinel]
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23
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21 views
Georeferencing Sentinel-3 LST product
I have been stuck attempting to convert Sentinel-3 LST netCDF data to geotiffs for a while now as part of my master's thesis.
Firstly, an introduction to the data. It is packaged as follow:
The data ...
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17 views
Sentinel 5P Extraction through Google Earth Engine : scale
I've been trying to extract Sentinel 5P imagery through GEE and I am confused on which scale to extract using Export.image.toDrive function. Usually, we give 30m resolution for LANDSAT imagery as the ...
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1answer
106 views
Sentinel-1 radar data all zeros with Python SentinelHub API
I am requesting Sentinel-1 SAR data but rather than throwing an error the code is just returning zeros.
My request:
bbox = BBox([-145.8, 60.96, -146.5, 61.38], crs=CRS.WGS84)
bbox_size = ...
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33 views
Downloading Sentinel 3 data using Python
I need yo download Sentinel 3 data with Sentinelsat python api but all I get after downloading is a bunch of .nc files and a xml file. But I was expecting the OLCI sensor data products. Here is the ...
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27 views
Mean monthly NDVI from Sentinel to CSV-files
I am trying to create monthly NDVI maps from Sentinel in Google Earth Engine. The script that I'm using is from things I gathered around the internet. When I try to download this to a CSV-file, I get ...
1
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1answer
116 views
Calculating EVI in Sentinel 2-2A
I am trying to calculate EVI for a Sentinel 2 Level 2A image collection. I have applied the Sentinel cloud mask provided by GEE but am not sure I am applying EVI correctly because my range is not ...
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17 views
Analysis of clustering results in SNAP
I have implemented K-means and Expectation- maximization algorithm on my sentinel-1 SAR image in the SNAP toolbox.
Now I want to compare which clustering result.is better using beta -cv or silhouette ...
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17 views
Seeking Moderate to High Resolution Forest Fire Before and After Images
I'm trying to search through the moderate to high-resolution satellite image data sets for imaging that shows forests both before and after a forest fire in order to assess the burn severity and the ...
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1answer
147 views
Authentification failed when using SentinelHub Plugin in QGIS
I downloaded SentinelHub v2 plugin into QGIS 3.14.
When I want to log in with my ID (from SentinelHub / Configuration Utility / ID) it says "Authentification failed, check your credentials"....
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1answer
87 views
Rasterio: select subset of georeferenced image by lop left coordinates and height, width
I want to subset a 10m sentinel dataset using rasterio window modul.
I have tried using the window = from_bounds(...) part in .read() however it requires for me to put in the left top right bottom ...
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2answers
186 views
Sentinel-3 single image per day
I have created a list of dates from which I would like to get Sentinel3 images, only to find that I have multiple images per day.
How can I reduce it to 1 image per day? I intend to do use median for ...
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1answer
67 views
Seeking Sentinel L1C images (.SAFE) from 2015-2019 since no longer available on Copernicus Open Access Hub
I am looking for Sentinel images from before 2019 in L1C quality and .SAFE format, as I want to correct them with sen2cor in SNAP to convert them to L2A quality.
Where can I find them now that they ...
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133 views
Is sen2cor available as a Python library or can it only be used through the command line?
I am looking to correct older Sentinel 2 data to have BOA reflection and would like it to be part of a Python script (I'm working in Windows), but looking online it seems that you can only run sen2cor ...
1
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1answer
80 views
How to identify landuse change with Sentinel data - specifically grassland/woodland to arable cropland changes
I have an assignment to assess whether it is viable to use sentinel data to monitor illegal changes of landuse from Grassland/Woodland to arable cropland.
This is the first time my environmental ...
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1answer
396 views
Max Pixel Value Error in Google Earth Engine
I've written below code in Google Earth Engine for carbon monthly product from sentinel-5 but when I click on the run button for save in Google drive, it shows error. How can I solve this problem?
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2answers
183 views
Manipulating Sentinel-1 SAR Imagery to get Pixel Information
For S1 SAR imagery data, how would I go about accessing the data of individual pixels? I need to analyze pixel intensity based on their lat and lon coordinates. I know this information is viewable in ...
3
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1answer
327 views
Satellite image disappearing when zooming in
I'm trying to get a satellite image using the SentinelHub plug in.
This works, however, when I zoom in to make my other layers clearer (roads etc.) the satellite image disappears and the background ...
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1answer
110 views
Calibration annotation data for Sentinel-1 images downloaded from Sentinel Hub?
I received some Sentinel-1 tiff images that were downloaded via the WCS service, so they're just the tiff files, not the full SAFE-format products. They're for the IW GRD product, and my ...
2
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1answer
187 views
Sentinelsat: Error trying to download from Norweigan mirror colhub.met.no
I am trying to download the Sentinel 2 images over an area of Western Norway. Since the ESA archive is very slow, I am trying to use the Norwegian mirror for Sentinel instead (https://colhub.met.no/#/...
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1answer
331 views
How to download tile from Amazon’s Sentinel-2 service
How do I access Sentinel-2 imagery via Amazon?
I'm new to GIS and have been relying on USGS earth explorer and EO Browser but would now like to access satellite imagery with higher resolution. I ...
2
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2answers
407 views
Storing image with rasterio as gtiff modifies image histogram
I'm trying to store and image as as gtiff, but the resulting image is changed, and I can't explain why.
I'm reading sentinel jp2 band images using rasterio, I rescale these images from [0-10.000] to [...
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1answer
361 views
Running script with Sentinel 2 images?
How can run this script with Sentinel 2 images?
// Use a DateSlider to create annual composites of this collection.
var collection = ee.ImageCollection('LANDSAT/LC08/C01/T1');
// Use the start of the ...
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0answers
145 views
How to correct depth values with tide data? [closed]
We are trying to derive bathymetry using sentinel images using QGis 2.18.
The training data is from a boat gps track taken in 2 days. The depth value captured needs to be corrected for tidal ...
