Questions tagged [land-surface-temperature]

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MODIS LST QC_Day band has masked out areas, why so?

I am trying to compare January's mean composite of MODIS Terra LST 8-Day Global 1km (MOD11A2.061) of the year 2021 processed using two different platforms. The first one is done using python scripts ...
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Different MIN values from same year's yearly mean composites: one composite from all images and another from monthly composites

I am comparing (maximum & minimum values) yearly composites (both day & night) of Terra MODIS Daily LST 1 km. I calculated using same images but different approaches - just to see if they have ...
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LandSat Land Surface Temperature - Python

I'm trying to determine if my code for determining land surface temperature is correct. The imagery contains a fire in the middle of October with snow mixed in so temperatures show be nice and ...
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Land Surface Temperature - Landsat 8 - Python

I'm trying to determine if my code for determining land surface temperature is correct. The imagery contains a fire in the middle of October with snow mixed in so temperatures show be nice and ...
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Landsat 8 LST estimation high values for band 10 DN

I am working on a project and it's about estimating LST based on Landsat 8 OLIS/TIRS C2 L2 (downloaded directly from United States Geological Survey). The calculation of LST is not the problem. I ...
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Landsat8 collection 2 level 2 band ST_B10 - correction?

I am working on deriving Land Surface Temperature from Landsat8 collection 2 level 2 band ST_B10. Do I still need to correct for NDVI or is the temperatures accurate once the following corrections are ...
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Why this LST code does not give full area coverage?

I am new to GEE. However, I am using the following code for LST measurement. But When I use the code, I see there is Landsat image covering the whole area but the LST layer doesn't get the area ...
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Why this LST code for Landsat 7 is not working?

I am trying to calculate LST from landsat 7, Band ST_B6, using the following code https://code.earthengine.google.com/8e6c7e6060b8e658c9985d4f4f05f30f imagen.multiply is not a function;is not a ...
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Calculate yearly change of LST data from MODIS in QGIS

I have monthly raster scenes (June) from MODIS for the period 2000-2020. So for each year one scene. Now I need to determine the yearly change in temperature for the month of June per pixel in degrees ...
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1 answer
152 views

Google Earth Engine extracting and exporting Modis MOD11A1 data - Observation Time

I extracted daytime and nighttime land surface temperatures (LST) of my 13 points from the Modis MOD11A1 dataset using Google Earth Engine (GGE). For this task I modified the following code: var ...
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1 answer
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Why my LST code for L5 given high temperaure result?

I am using landsat 5 for LST analysis. My major focus is water temperature. I am using the following code: https://code.earthengine.google.com/3dfd6eb7af4e01cc9c8cf438dd6f80fd // This example ...
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Looping through multiple folders to calculate mean(s) of multiple rasters using cell statistcs ArcPy

I am a novice in Python programing. I have multiple MODIS rasters in different folders for which I want to calculate the mean of corresponding rasters in each folder. I have tried the following code: ...
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Land Surface Temperature in GEE: ,Creating a Chart with correct values

I have this code below for creating an LST for my region. Then, I create a chart with the mean values. But code gives the LST values in the chart in negative from the range -250 to -293. Now I do not ...
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1 answer
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Error calculating LST in QGIS

I was using QGIS to calculate the LST of a city from Landsat 7 and 8 datasets. I was following online formulas to do the computation but I kept getting weird results (i.e. -17~62°C or 44~71°C; which ...
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Can I obtain LST time series from Landsat 7 dataset for 2019-21?

I used the below code I got from a similar question for obtaining the time series of LST using Landsat 7 dataset. I am getting error as: Image (Error) reduce.median: Error in map(ID=...
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The raster has a lot of different values. Does the raster store a nominal variable. In Molusce plugin

While importing the Derived LSTs of 2000 (Landsat 7 and 5), 2009 (Landsat 5) and 2020 (Landsat 8), the LST of 2000 and 2009 are importing but 2020 shows "The raster has a lot of different values.&...
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LST —-Sentinel 3

I know how to extract the Land surface temperature from the Sentinal3 through the Snap program and then click on the LST band after that the Land surface temperature appears, but how can I extract the ...
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How can I group Land Cover Classification into urban vs rural areas and summarize Land Surface Temperature for each class in python? [closed]

I have NLCD land cover classifications from an .img file as follow: I would like to somehow reclassify these into Urban or Rural by taking all developed as urban and the rest, minus water as rural. ...
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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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Downloading time series LST from Landsat

Here is the code I am using to download a time series data representing the LST over a three month period in 2018. However, the code gives me this error A mapped function's arguments cannot be used ...
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CORDEX and CanRCM4 data lapse rate

I am using CanCRM4 data from the CORDEX model for modelling ice cap mass balance. I was wondering if anyone had any information about the type of lapse rate used in this data set and if it can be ...
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How to transform Kelvin to Celsius in GEE

I'm struggling to transform Kelvin to Celsius in Google Earth Engine. I'm working with ERA5 2 meter air monthly average and the output of the code below is in Kelvin. How can I transform it into ...
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101 views

Calculating UHI using Raster Calculator in ArcMap 10.3

In ArcMap 10.3 I want to calculate urban heat island through the formula which is: UHI= LST + (standard deviation (LST.NDVI and NBVI)/2) I have the LST layer, NDVI and NDBI but I don't know how to ...
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Interpolate temperature values (with associated lat and lon values) at different depth intervals using Krig function in the 'fields' R package

I have temperature data points in different depth intervals with associated lat long values across the study area. I want to make a raster and then interpolate between cells of the raster where there ...
1 vote
1 answer
199 views

Land Surface Temperature in GEE: Creating a Chart

I have this code below for creating a LST for my region. Now I want to create a chart with the median instead of the mean values. But I do not know how and where in the code. Besides, I would like to ...
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Getting Max, Mean and Min Temperatures of several sites ERA5

I've been trying to export daily MAX, MIN and MEAN Temp for a specific region, but something seems to be wrong, because I can't get any value. var dataset = ee.ImageCollection('ECMWF/ERA5/DAILY') ...
2 votes
1 answer
1k views

Land surface temperature in Google Earth Engine

I want to create the LST in GEE for my region. I'd like to analyse differences. I found this code below, but the processed image is just one color. I'm not sure if it's right or if I have to change ...
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Extracting NASA Earth Exchange Global Daily Downscaled Projections for a country

I use the following codes to extract projected temperature data from NASA for a specific point. However, I am not sure how to apply these codes to get the data with a shapefile of a country. The ...
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2 answers
347 views

Exporting Image Collection - Landsat-8 Surface Temperature (Google Earth Engine)

I've been trying to export the quarterly mean surface temperature derived from Landsat-8. I stumbled upon the batch module of fitoprincipe's. However instead of exporting a single image for each ...
1 vote
1 answer
87 views

Error generating chart: No features contain non-null values of "system:time_start". Landsat 8 Surface Temperature Time-Series Chart (Earth Engine)

I want to create an average surface temperature time series chart (+ per year). However I am encountering this error Error generating chart: No features contain non-null values of "system:...
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455 views

Calculating LST from Landsat 8 image collection in Google Earth Engine?

I wrote a code for Land Surface Temperature (LST) from Landsat 8 image collection in the google earth engine. I have calculated the following steps, NDVI, fractional vegetation (fv), emissivity (EM), ...
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114 views

LST time series chart shows up as a line

Here is the code I am using to create a time series chart representing the LST over a three month period in 2018. However, the mean LST in the chart appears as a straight line representing one ...
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1 answer
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Image time series chart not reading bandName property in doy.SeriesByRegion

Here is part of my code for creating a time series chart in GEE. var addLST = function(image) { var LST = thermal.expression( '(Tb/(1 + (0.00115* (Tb / 1.438))*log(Ep)))-273.15', { 'Tb': thermal....
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1 answer
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Chart Problem Time series on Land Surface Temperature in Google Earth Engine

In Google Earth Engine, I am having a trouble with my chart. Gets only one value as photo below. Is there any solution? My code is as follows: //cloud mask function maskL8sr(col) { // Bits 3 and 5 ...
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MODIS Land Surface Temperature hdf to tiff - problem with lst values after reprojection

I have a folder with MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V061 hdf files (downloaded from NASA's Earth Data Search). I want to use the following script that I ...
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Finding Land Surface Temperature in/across 4 continuous images in ArcMap

I'm trying to find Land Surface Temperature of 4 continuous Landsat8 images in ArcMap 10.4. I was able to calculate them as individual panels (using these two videos as guidelines: https://www.youtube....
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Thresholding NDVI to calculate emissivity for land surface temperature using QGIS [closed]

I am using QGIS 2.4.0-Chugiak. I am analysing urban heat island using thermal band 6 of Landsat TM-5 sensor with respect to Normalized difference vegetation index that derived from the Band 3(Red) and ...