Questions tagged [landsat]

A series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.

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How to Export/Save Array/List Objects in Google Earth Engine to CSV Files in Google Drive?

I’d like to go through the Landsat archive for a particular row and path and calculate the number of pixels identified as water, land, snow, and cloud (using the QA_PIXEL band) for each image. My goal ...
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Landsat 8 Cloud Masking using Pixel QA in ArcMap

I have a scene that has clouds and shadows which I would like to mask before I continue with my Classification. I am using LC08_L1TP_180073_20141224_20170416_01_T1 which has a pixel QA file. I ...
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Load raster from Requester-Pays S3 bucket into QGIS

I have successfully requested Landsat data from the USGS S3 bucket by following the provided tutorial. Now I want to pull a raster directly into QGIS via the Data Source Manager. I have set my ...
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Scanline error fixer unable to fix the problems

I am using ArcGIS version 10.7 and my objective is to do LU/LCC and NDVI; however, Landsat 7 scanline error fixer toolbox does not fix the problem Landsat 7 image. What shall I do?
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Downloading data from Earth Explorer (USGS)

I am trying to download some landsat data using the USGS Earth Explorer tool. Before logging in, I can select my data sets using the data set tab, but can't download the images as I have to be logged ...
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Antarctic data in Earth Engline Landsat 8/9 collections

I am trying to use Landsat collection 8, to look at a feature in Antarctica. Specifically this collection https://developers.google.com/earth-engine/datasets/catalog/LANDSAT_LC08_C02_T1_L2 although I ...
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Imagery from two Landsat 8 paths are visually different

I downloaded the Landsat8 L2 imagery for my study area from EarthExplorer. Satellite footprints from two paths cover my study area (image below). But there is a significant visual difference in ...
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Landsat provisional ST ARD data

Can Landsat provisional ST data from the Tier 1 ARD collection can be used in GEE?
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Using images from different Landsat missions and Sentinel-2 for machine learning

I am doing some image segmentation using random forests on satellite imagery. The events I am trying to detect are somewhat rare so my training sets are very limited if I want to use Sentinel-2 ...
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How can we know that a random satellite image is atmospherically corrected or not using python?

If a satellite image in .tiff format was given. what are the values that can be obtained from a satellite image using python to see whether it has atmospheric errors or not? I am expecting what values ...
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How QGIS categorizes the "nodata" area of the Raster

I got the Landsat 8 image and removed the black area by doing nodata = 0. I have a question here. What is the definition of nodata? Is it a pixel with a DN value of 0? Or is it an area with no DN ...
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Use ostu to count water, but export image is all black

When I run my code, it can be print image in map. But when I export to the Drive, it becomes all black image. Like this: There is my code, it will be a few long. Most part of them is OSTU code which ...
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Using Landsat MSS Collection 1

When I use Landsat MSS Collection 1 dataset in my roi, I can't get any images from Tier1, but Tier2 I can. This is code from someone to count the number of image, each year. When I switch to Tier2 ...
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Stacking rasters with differing CRS using R

I have 12 GeoTIFFs to stack in R and have run in to a problem. When I try to process the images as a stack in R it fails as their extent differs. The rasters originate from Google Earth Engine. They ...
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Where and what kind of information is geographic information stored in satellite images?

I downloaded the landsat8 image tif file, and I tried to overlap it with Google map in QGIS. The match between landsat and Google map means that the landsat image contains geographic information, but ...
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Return the acquisition time of an Landsat 7 image?

I try to get the timestamp of the least cloudy image for my region of interest (roi). I want to obtain the date of this image in the time range 2012-10-01 - 2012-12-31. I know that the image exists ...
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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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LANDSAT-7 strange strip on SWIR bands (B5 and B7)

I was exploring Landsat 7 data on SentinelHub and came across with this strange strip in the SWIR band B7 (also B5): By placing a pin in this strip and exploring the stats, I found that there is no ...
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Chlorophyll and particulate matter in the river

In the routine below for Google Earth Engine I can get the indexes of SAVI, NDVI etc. How can assemble code to obtain chlorophyll and particulate matter in suspension in river using images from ...
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GEE Image Collection to Multiband Image Outputs Gibberish

I'm using Landsat imagery in Google Earth Engine and am attempting to convert an image collection to a multiband image. However, before doing so I do two things: I mosaic the images by date so that ...
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Getting the index MSAVI2 with Landsat 7 images

I am new to the Google Earth Engine script world. I need to obtain the MSAVI2 index on a particular polygon, but it throws me an error in the line: .map(maskClouds), which throws: maskClouds is not ...
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Landsat 5 EVI in Google Earth Engine

I used this script for Landsat 8 and it worked fine, I've changed the band info for Landsat 5 but now I get this error: ImageCollection (Error) Error in map(ID=0): Image.select: Pattern 'B4' did not ...
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Noisy lines in all scenes for Landsat 7?

I'm seeing patterned lines in all Landsat 7 images that clearly are image artifacts. There are lines that jet in from the edges (the center looks better) Does anyone know what it is and if there are ...
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Do I have to do any preprocessing on Landsat 8 Surface Reflectance data sets in Google Earth Engine?

I am working on calculating NDVi and EVI indices from different years (50 year time period) and comparing them. I have a few questions regarding the datasets that I have found on Google Earth Engine (...
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Are Landsat satellites exactly sun-synchronous?

Sun-synchronous satellites are known to pass over any given point of the planet's surface at the same local mean solar time (link-to-wiki). Landsat is one of these sun-synchronous satellites. I'm ...
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Landsat Quality Assessment for a Cloud Mask

I'm relatively new to GIS and am wanting to mask out the clouds of Landsat images using the supplied QA band, I'm limited to free programs, mainly QGIS. So far I've managed to get a cloud mask ...
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5 votes
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Using scaling factor for collection 2 level 2 with Roy et al constants

I am using the Landsat ETM+ to OLI harmonization tutorial but I need it for Landsat collection 2 L2 data, this means the scaling factors have changed. I am not sure how to apply the scaling factors in ...
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Indexing USGS Landsat Collection 2 data in Open Data Cube [duplicate]

The USGS Landsat Collection 2 data has been released for a while and there's no clear way to index it into the Open Data Cube. Is there a prepare script or some other method that can be used to index ...
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Characterizing annual NDVI for small site areas with significant time series gaps

I'm looking at 30 years of growing season Landsat 5 NDVI for small areas (three sites, each with 9 pixels). For some years there are only one or two available images due to cloud cover, other years ...
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Should my Landsat 8 Imagery be Looking this Dark?

I'm downloading daytime satellite imagery from Landsat 8 and am slightly concerned that I'm doing something wrong because the imagery is so dark. This was a composite image of Indonesia I made: In ...
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Shouldn't albedo be determined by surface reflectance?

I am new to this field. I'd like to look up albedo in a small area (about 1 sq km), but I don't know much about how to do it. I was hoping to use surface reflectance with landsat correction, but it ...
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Download time series Landsat 4 images using Google Earth Engine

I am trying to download Landsat 4 SR data using the below code. But it is showing the error 'Line 33: Collection.toList: The value of 'count' must be positive. Got: 0.' Code: var geometry = /* color:...
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If Landsat Collection 1 is being phased out, how can alternative atmospheric corrections be applied?

I'm currently using Google Earth Engine and have seen that the Collection 1 product for Landsat 8 is being phased out and also will only be available with Landsat 9 for a year after collection. I ...
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ENVI 5.2. MTL file doesn't open directly

Whenever I try to load my GeoTIFF with a metadata file, the data manager window opens so I can only load my satellite file in specific band combinations. . I had am new to ENVI however I had no ...
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How to extract Landsat time series for multiple location

I want to extract Landsat time series for multiple locations. I refer to the code in this tutorial.Because I chose a time period of 2019-01-01 to 2019-12-30, I should get multiple columns of ndvi data,...
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How to calculate the NDSI of a specific region

This is my code to find NDSI. However, I can only find the NDSI of a specific point by this code. How can I find the NDSI of a region, such as a rectangle region. // NDSI. // The Normalized ...
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Radiometric corrections with R

I try to convert Landsat 8 files to reflectance via R / RStoolbox I use that script : metaData <- readMeta("LC08_L1TP_183033_20210623_20210630_02_T1_MTL.txt", raw=T) lsat <- stackMeta(...
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Layer error when changing platforms

I am running an analysis of vegetation and fire over a 20 year period. From 2020 - 2016, I have been using the Sentinel-2 imagery but from 2015 back to 1998 I need to use Landsat imagery. The bands ...
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Landsat 8 Collection 2 (C2) Level 2 Science Product (L2SP)

I am exploring data sources for land surface temperatures (LST) for summer 2021. From Landsat 8 Collection 2 Surface Temperature (https://www.usgs.gov/core-science-systems/nli/landsat/landsat-...
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Co-registration issue for the Landsat collection 2 level 1 products

While browsing through the Landsat image product, I come across an issue. The below images are two Landsat 1 scenes (Landsat collection 2 level 1). The problem is in the overlapping part of the ...
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Landsat 8 appears to be "greener" than Landsat 5?

I noticed something strange in my NDVI time series. Here I plotted NDVI for some geometries of interest in European countries between 1985 and 2020. You will see there is a noticeable jump in NDVI ...
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When using Landsat and Sentinel-2 data to implement the change detection, I got very different result

I used the code that is from gee-ccdc-tools.Now I know the actual time of change. I just change "getLandsat" to "getS2" for the change detection.And the result of change detection ...
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SEBAL for Landsat 8

The SEBAL manual for Landsat 5 TM and Landsat 7 ETM+ is available on the internet, however, this manual is not applicable to a certain extent if the researcher needs to estimate evapotranspiration ...
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2 votes
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Using RandomForest for land use classification in Google Earth Engine: Training accuracy shows error

I am using RandomForest classification for my LULCC study. I have been successful in running the classification including getting the "validation accuracy" as 0.87. However, my "...
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Is there any way to use RF classifier used in one code into a new code in GEE?

I am using Random Forest to classify land use change across time. For this, I am using multiple sensors such as Landsat 8, Landsat 7 and Landsat 5. So far, I have classified my LULCC for 2020 using ...
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Can't import Landsat 4 images to Google Earth Engine

I am trying to add a Landsat 4 level 2 collection 2 image to the Google Earth Engine code editor. The code sample is the following. var dataset = ee.ImageCollection('LANDSAT/LT04/C02/T1_L2') ....
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3 votes
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How to extract periods in collections in GEE?

I have the following code where I calculate the greenest pixel composite for the months 5-9 from Landsat 7. var geometry = /* color: #d63000 */ /* shown: false */ ee.Geometry.Polygon( ...
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Difference between TOA and SR in Landsat sensors

I am looking at long-term mangrove forest change (1990-2020) in Indonesia using Landsat satellites. These are the years and sensors I have chosen: 2020- Landsat 8 T1 SR // 2010- Landsat 5 TM T1 TOA // ...
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1 vote
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How to mosaic Landsat MSS data in R?

I am trying to mosaic Landsat MSS scenes using the mosaic function in the R package raster. To explain the problem, I have considered here the four following TIF files, which I want to mosaic: ...
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Generating GPP and NPP from Landsat images using Google Earth Engine JavaScript API

I just started to to use the GEE and I want to calculate the annual GPP and NPP from Landsat 8 images. I have spent much time looking for a tutorial on how to do this but all I could find is multiple ...
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