Questions tagged [modis]

Questions about data from the Moderate-Resolution Imaging Spectroradiometer sensors aboard the Terra and Aqua satellites.

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Downloading individual MODIS Aqua tiles for analysis of 2019-2020 NSW bushfires

I am searching for MODIS Aqua tiles that contain active fires' reflectances for blow-up fire days in the 2019-2020 bushfires in NSW Australia. I have searched all over the web and can only find ...
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Lon and Lat flipped when converting MODIS to Lat Lon

I found a code online that plots MCD19A2 tiles correctly, but I need to make manipulations to the data, and not just plot directly so I am making my own code for that. I basically copied the code I ...
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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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51 views

GCI and NDVI Uncorrelated in Same Region and Time Period

I am attempting to calculate NDVI and GCI values during the 2019 growing season within districts in Mali. Specifically, I want to take the max of NDVI/GCI values for each pixel over the growing season ...
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33 views

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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Snow cover timeseries in GEE - MODIS NSI - shows zero snow in winter in Norway

I want to make a simple time-series of snow cover in a study area in Norway. I modified the script below from another post: Generation of snow cover area time series in GEE using MODIS Snow Cover ...
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Geotransform problem when converting MODL2 hdf to tiff using pyhdf

I am to using Python to process MODIS data,and now I am trying to covert MODISL2 hdf data(atmosphere corrected products using MOD02 and Seadas) to Geotiff files for futher band calculation. I could ...
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85 views

How current are near real time MODIS products maintained by GEE (MOD09GQ) ? What is the update frequency?

I'm trying to compute a near real time time series of MODIS daily NDVI from MOD09GQ for an area of interest. I was using some download tools that got deprecated and are no longer supported (MODIStsp ...
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24 views

How to remove MODIS LST scenes from image collection that have no unmasked pixels in study area?

I am trying to get image collection of MODIS daily LST for monsoon season for a region that often has cloudy days. Filtering MODIS collection with filterBounds seems unable to remove scenes that have ...
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Image (Error) User memory limit exceeded

I was trying download spectral bands. Below show my scrip, the first part do a mask for take off land cover i don't wish. After, i do a date cube, for download the spectral band, where each band is a ...
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36 views

QGIS - How do I upscale resolution of raster data from 500mx500m to 100mx100m?

I have a raster file that is derived from MODIS which gives 500mx500m resolution and want to change the resolution to 100mx100m. The issue is when I look at the properties of the file it only gives ...
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Apply scale factors to MODIS NDVI in the code to make time series of inter annual average in GEE

I'm new to GEE. I'm working on NDVI time series. I want to know how to multiply all the images inside a ImageCollection by scale factor 0.0001 to get real NDVI values to make chat of inter annual ...
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32 views

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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Error while downloading MODIS data using runGDAL

I am new to GIS and spatial analysis. I am trying to download MODIS vegetation index data using runGDAL from the ‘MODIS’ version 1.1.5 package (https://rdocumentation.org/packages/MODIS/versions/1.2.3)...
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Linear data imputation conversion to bilinear interpolation in Python?

I have a project where the task is to impute missing data values from a modis TIF file using Bilinear interpolation. I tried to use linear interpolation to impute the missing values, but trying to ...
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1 answer
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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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Why does no one use MODIS data from 2000?

While MODIS Terra was launched in 1999 and has data covering the year 2000, no one seems to use this in their analysis but rather starts the data collection from MODIS by the year 2001. Why is that? ...
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System Time Start Error in Google Earth Engine?

I need extract date of each image and set to the id in each date by the below code. Although all elements in modis collection included 'system:time_start' property, code returns error. Does anyone has ...
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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
36 views

Calculating MODIS EVI feature collection but not landsat

I'm not sure why I am able to calculate the median EVI for MODIS but not for Landsat. I can see the time series of Landsat EVI values in the Inspector panel for a single pixel but when I export I get ...
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1 answer
20 views

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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1 answer
41 views

GEE: Structure Insensitive Pigment Index time series for multiple polygons

I am trying to calculate the Structure Insensitive Pigment Index (SIPI) using MOD13Q1.061 Terra Vegetation Indices 16-Day Global 250m. More specifically, I would like to get a time series for multiple ...
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51 views

Google Earth Engine combine image collections with different recording times

I am trying to combine my MODIS (recorded every 8 days) and Daymet (recorded every day) dataset, focusing only on Iowa. In the code below, I reprojected the datasets so that the pixels will be the ...
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Getting pixel values from MODIS level 3 product using ArcMap

I wanted to find and map pixels with a certain chl value from the downloaded MODIS Chl data from NASA ocean color web. When using 'identify' tool (ArcMap), I can view the particular pixel value but I ...
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180 views

Calculating snow cover area using MODIS Snow Cover data MOD10A1

I have a code of MODIS snow cover time series analysis, but I want to count the snow pixels covering my AOI and thereafter calculate the area and plot a chart where to incorporate the code in this: ...
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42 views

Convert MODIS HDF into GeoTIFF

I want to convert HDF files to GeoTIFF format. I attempted to instal Earthdata NASA "Release 2.15 (April 2019)" but was unsuccessful. I made sure to act in accordance with the guidance. But ...
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18 views

MODIS Monthly Temperature (MOD11C3) surface temperature values seem too high. Has anyone else had this issue?

I am currently working on a school project, and downloaded MODIS monthly temperature data (MOD11C3) to examine surface heat distribution in Southern California in the month of September 2021. Next, I ...
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1 answer
74 views

Exporting MODIS AOD monthly(mean) composite for 5 years

I am writing a code in Google Earth Engine, in which I want to export the image composite of mean monthly MODIS AOD for 5 years. I am writing the following code, but whenever I try to run it the ...
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286 views

Calculating monthly Modis NDVI using GEE Python API applied to one or multiple regions and exporting results to Pandas DataFrame [closed]

I want to obtain a monthly-year time series of the NDVI inside certain region defined by a polygon. I think I could made it using JavaScript. But I would like to translate to the Python API. I'm a bit ...
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Reproject Data on to WRF grid

I have MODIS data EVI and LSWI which I want to fit to WRF grid which in LCC projection system, I can read specification using CEN_LON, LAT1, LAT2. Based on that I have reprojected my TIFF files using ...
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90 views

How to create a list with the classes values in a raster?

Let's say that I have a hypothetical study region and I just want to create a list object with all of the LULC classes within that region. How can a get it? I got, for example, a MODIS LULC: var ...
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24 views

Uploading multiple Aqua/MODIS files (NetCDF format) into QGIS in one action to convert into raster files

I have 70+ Aqua/MODIS files (NetCDF format) representing sea surface temperature (SST) that I want to upload into QGIS in one action to convert each file into individual raster files (i.e. 70+ raster ...
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1 answer
64 views

Image Collection Join Error in Google Earth Engine

In the below code, I want to join two image collections based on system:time_start property but it does not work and returns 0 element. Collections acquisition dates are same but they are different in ...
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1 answer
97 views

QGIS: Multi Overlay Analysis of NetCDF-4 Raster Files to Calculate Average Values over 5 years

Issue: I have a dataset that ranges from 2016 to 2021. The file types that I am going to use for the analysis are Aqua Modis and NetCDF-4. My data contains 650 rows and I am using parameters such as ...
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1 answer
50 views

Removal of location names

I am using the FireCCI51: MODIS Fire_cci Burned Area Pixel Product, Version 5.1 dataset on Google Earth Engine and wondered whether there was a way of removing place names from my image or overlaying ...
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155 views

User memory limit exceeded in Google Earth Engine

I am trying to resample the MODIS evapotranspiration product from 500m to 30m. I am using the following code: var MODIS_data = ee.ImageCollection('MODIS/006/MOD16A2') .filterBounds(...
1 vote
1 answer
72 views

Empty map error for MODIS NDVI time series on Google Earth Engine

I am trying to get a time series of MODIS NDVI for a point, with the script below and it works quite well, except when I try to include the year 2017 where I get the following error message: ID: ...
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177 views

Reducing MODIS MOD16A2 evapotranspiration over a season

As per IMD, there are 4 seasons over India which are viz winter (January-February), pre-monsoon (March-May), summer monsoon (June-September), and post-monsoon (October-December). GEE Javascript API ...
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34 views

How can I know if I'm using terra or aqua satellite

I'm using the MOD09GA product (mainly using band 6). I want to work only with the data from the Terra satellite; how can I know if the image is Terra or Aqua? I looked in the MODIS Surface Reflectance ...
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2k views

Getting 'xml.etree.ElementTree.Element' object has no attribute 'getiterator' error when run createMosaicGDAL.run

I am using pyModis to mosaic some tiles of MCD12Q1. I have downloaded the dataset and I am trying to mosaic those tiles. from pymodis.convertmodis_gdal import createMosaicGDAL files = glob.glob(os....
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1 answer
225 views

Error: "Parameter Element is Required" in Google Earth Engine?

In the below code I want to put elevation average values in to the list but returns error: code link: https://code.earthengine.google.com/6337849ec707ae2e229ba4bdb02e5fff var startDate = '2000-01-01';...
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15 views

MODIS MOD09GA product B6 "stripes"

I'm trying to work with the MODIS surface reflectance data of B6. I'm have downloaded the MOD09GA product, and the image format is HDF. It seems that all the images present "stripes" on B6. ...
1 vote
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20 views

Image Plane or Object Plane Scanning Satellite Instruments

Scanning systems can be classified as either Image Plane or Object Plane, depending on where the light rays converge, as shown in the following figure. I would like to know if the Terra MODIS, ...
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How to mosaic multiple rasters (MODIS data) in R programming

I've four tiles of MOD16A2 dataset, I want to mosaic them using following script in R. filez <- list.files(path = getwd(), pattern = ".tif") r.list <- list() for(i in 1:...
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MODIS area burned by day of year using Google Earth Engine

I'm trying to use Google Earth Engine (Python API) to calculate area burned using the MODIS area burned dataset; specifically I want daily area burned (for a single year) over a particular area of ...
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34 views

Accumulation Function Error in Google Earth Engine?

The below code is going to calculate accumulative temperature by adding each image to the previous ones. Despite it works and plots values but csv file shows many dates have been missed before. Does ...
1 vote
1 answer
51 views

Add Each Image to Previous Image in Google Earth Engine Error?

The below code has written to add each image to the previous image using iteration function but I don't know why returns negative values while positive expected! Code link: https://code.earthengine....
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137 views

GEE: export image collection to google drive

I am completely new to GEE and want to obtain Modis burned area product for the years 2017-2020 as tiff-files. I worked out this code, but when I run the code it says in the console: object.name is ...
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32 views

Using band threshold to modify value of another band in Google Earth Engine

I've recently been working on MODIS' ice product, and I want to use whether the value of the band by class is equal to some specific value to determine whether the band by NDSI is 0 or 1.codes as ...
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1 answer
704 views

Google Earth Engine extract values on MODIS data at point coordinates

I'm trying to extract from the MODIS collection MOD11A1006 band "LST_Day_1km" at one point coordinates the value of each image in the collection together with the date, and hour of the image ...
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