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

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7
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0answers
251 views

Frontal Detection of sst & Chlorophyll image

I am working on sea surface temperature satellite images and looking for delineating gradients in open source on the basis of temperature. Is there any tool like Cayula and Cornillon front detection ...
5
votes
0answers
139 views

How do I open MOD17A3 in ENVI such that it is properly georeferenced?

I am using ENVI 5.1 on Windows 8. I am trying to open a MOD17A3 (MODIS Net Primary Productivity standard product - L4) .hdf file which I downloaded from the USGS website. I am still a beginner at ...
4
votes
0answers
43 views

How to reproject MODIS L2 data with lat/lon

I downloaded the MODIS level 2 data for precipitable water vapor (MOD05_L2.A2015193.1535.006.2015194020321.hdf) and the corresponding geolocation file (MOD03.A2015193.1535.006.2015193213734.hdf). When ...
3
votes
0answers
90 views

MODIS R Package: GDAL Not Available

I am trying to analyze the MODIS EVI 250m, 16day dataset. I found the R MODIS package and am following the instructions here: ...
3
votes
0answers
58 views

VI Quality dataset in MODIS image

While importing NDVI dataset in ArcGIS should we also import the VI_Quality dataset ? If yes then how should we handle it ? and, if not, then for what it is there ?
3
votes
0answers
244 views

How to merge SeaWiFS and MODIS data or use other merged products?

I hope to produce a time-series for sea surface temperature (SST) and chlorophyll-a (Chl-a) for use in MaxEnt without the use of arcgis, preferring Python tools to others. I am new to satellite data ...
2
votes
0answers
53 views

TIMESAT seasonality data (MODIS EVI)

I am trying to get seasonality parameters from MODIS EVI (MOD13Q1) for Indonesia. I have loaded data from 2013-2015, but the plotted time-series is shifted from what I expect. Indonesia has ...
2
votes
0answers
69 views

16-day-MODIS NDVI values seem to be wrong compared to my soil moisture ground data!

I'm using MOD13Q1 product of MODIS for estimation soil moisture. As I know, this product is made up of the maximum value of NDVI of each pixel over 16-day calculated NDVI values. The problem is that ...
2
votes
0answers
67 views

Application of a Piecewise Logistic Function to Extract Seasonality Metrics

I am working with 16-day MODIS EVI (satellite) data and I want to fit a Piecewise Logistic Function through my 23 EVI data values. The following formula is for the Piecewise Logistic Function: y(t)= ...
2
votes
0answers
107 views

Flood extent extraction from satellite images

How i can extract the floodwater from satellite images? Is the image classification method accurate for moderate-resolution satellite (Terra/Aqua MODIS)? Or is there a more accurate methods? Thanks.
1
vote
0answers
61 views

Troubling using MODIS package in R (mac). Error with gdal

I'm new to using MODIS data, and have been trying to set up a a way to use the HDF files produced by MODIS on R. I had trouble with gdal (could only download the package through system dialog), and ...
1
vote
0answers
45 views

MODIS Quality Control in QGIS

I have to process 46 MODIS MOD15A2H images (leaf area index) in QGIS 2.12 Lyon. I have to clean the images from bad pixels using MODIS Quality Control. Is there any method to automate the process for ...
1
vote
0answers
19 views

Why there is a shif in MODIS coordinate (compared with Landsat/google earth image) after mosaicing and subsetiing the study area?

I am facing some difficulties in processing MODIS data set. To have MODIS data over my study area, I need to mosaic two tiles of MODIS (h29 v12 and h30 v12). I have used the MRT tool by NASA (the ...
1
vote
0answers
20 views

MOD09A1 QC layer

Does anyone know how to handle MOD09A1 Quality flags (QC) in in R? I was trying to use raster package but unable to unlock the QC band.
1
vote
0answers
19 views

What is causing LDOPE error when opening .hdf files?

I get the following error when I try using LDOPE-1.7 on Linux (64 bit) with Modis QA data. The specific dataset resides in the LDOPE-1.7 directory. bash-4.1$ ./unpack_sds_bits -of=ldopeQA.hdf ...
1
vote
0answers
33 views

Retaining resolution of MODIS data while reprojecting using gdalwarp

Can anyone help me to use gdal(gdalwarp specifically) for reprojection? I am using it to reproject MODIS data : I originally have an hdf file - MCD43A4.A2005001.h08v05.005.2007351192333.hdf which has ...
1
vote
0answers
62 views

How to mosaic multiple MODIS images of Multiple months using MRT tool?

I have monthly MODIS images for 2001-2014. For few images mosaicing with reprojection can be done using MRT tool. However, for large number of images it's a cumbersome process. There are multiple ...
1
vote
0answers
39 views

Script for batch-clipping or masking rasters in R

I need a script that can do following batch process for all files in a folder: a) Clip or mask each raster layer (LAI product from MODIS MCD15A3) with a vector layer (vegetation types obtained from ...
1
vote
0answers
46 views

Cloud and cloud shadow identification with MERIS

I am looking at MERIS images to use for marine applications (Chl-a. SPM) and would like to confidently remove cloud and cloud shadow pixels from the data. I have a few ideas: Using the blue band ...
1
vote
0answers
60 views

Modis Daily LST Data is mean of all day or it is on satellite path time?

I am looking for MODIS LST product which is exactly on the same time that satellite paths from a location,I have searched and found MOD11A1 but It seems that it is mean LST of Day,Is there any product ...
1
vote
0answers
24 views

lulc mapping from modis surface reflectance

can i prepare LULC with 10 classes from MODIS surface reflectance level 3 data 500m resolution... if so what are the preprocessing techniques should i do on the data..i have to prepare LULC for yearly ...
1
vote
0answers
108 views

Can't run sgolayfilt () on RasterStackTS in R

I'm quite new in R and remote sensing at all. Had followed the following step to filter my MODIS/NDVI data. library(sp) library(raster) library(rgdal) library(rts) library(signal) getwd() ...
1
vote
0answers
65 views

Urban Heat Island USING ENVI

I have downloaded MODIS images for a specified area.. Its my first time that I am working on UHI (Urban Heat Island).. I need to know the methods to work on it.. I am using ENVI for this.
1
vote
0answers
358 views

Conversion problem of projection of MODIS LAI from sinusoidal to geographic

I am trying to change MODIS data's (LAI) sinusoidal projection to geographic. Actually I did it. But when I reproject it by ERDAS, the output LAI raster moved about 10 km to west side of actual shape ...
1
vote
0answers
413 views

problem of using TIMESAT to processing MODIS NDVI

I want to use TIMESAT software to analyse time series MODIS NDVI data. Firstly, I use MRT tool to mosaic,subset and project MODIS NDVI data and output data as GEOTIFF format, and save as ENVI standard ...
1
vote
0answers
114 views

How to select MODIS pixels with 80% homogeneous landcover from landsat classification?

I have a complex landcover classification for a landsat scene at 30m spatial resolution. Includes about 600 land cover classes. There is a fair amount of clumping per group. I have a MODIS EVI 16 day ...
1
vote
0answers
116 views

Why does GDAL Translate not create any output in batch mode?

Has anyone tried using the Batch Mode function in GDAL translate - qgis2? I can process files individually ok, in my case MODISA HDF files. But the batch mode does not seem to work. Here is my set ...
1
vote
0answers
83 views

MOD11A2, falsely negative nightly LSTs

I am having troubles with extracting data in ArcGIS buffer extractions from the MOD11A2files after processing them into GEOtiff, most of them seem fine but when looking at nightly temperature on some ...
1
vote
0answers
391 views

Processing MOD35 cloud mask image?

I have a question about processing MOD35 cloud mask image. I worked reprojection on MOD35 cloud mask image using MODIS Swath Tool. The processed results of MOD35 cloud mask are consist of 6 band ...
1
vote
0answers
123 views

Regarding MCD43 products

I have a special MCD43 daily product with 250 m resolution in .hdf format. Whenever I try to open it in the MODIS Re projection Tool, the error i get is "error in module:read hdr file". What should I ...
0
votes
0answers
5 views

How to extract EVI from MODIS hdf data from several time using MRT?

I have been using Modis Reprojection Tool (MRT) to extract EVI from MODIS hdf files. So I have 23 MODIS hdf files from 1 year (16 days temporal) but from the same scene (h28v09). How to extract EVI ...
0
votes
0answers
5 views

Land-Water mask for MODIS 0.05deg grid

I need to create a worldwide land-water mask for a series of MODIS LST/VI images (0.05 deg). I know that each MODIS hdf file contains a land-water mask. However, this mask changes between different ...
0
votes
0answers
9 views

MODISTool R Error: Can't call method “prepare”

I have already used Modistool in R a few times, but lately I am facing the following error while using the function GetProducts(), GetBands(Product = "MOD13Q1") MODISTools::GetProducts() Error in ...
0
votes
0answers
26 views

Smooth raster stack

How can I smooth a raster stack of 300 bands using R/Arcgis/Envi? I used this code: setwd("D:\\") raster_dir <- "D:\\Modis VI quality\\" x <- brick(paste(raster_dir, ...
0
votes
0answers
47 views

how to convert the values of NDVI anomalies in percentage?

I have used NDVI-MODIS MOD13Q1 product to calculate NDVI anomaly for 13 years (2000-2012). I multiplied the product with the scale factor 0.0001. the problem that I am facing is that the, High and ...
0
votes
0answers
13 views

MODIS MCD43A3 albedo product: good quality observation and fill value at the same time?

I’m using the MODIS MCD43A3 albedo product on one of my projects. I only used the good-quality values determined based on the BRDF_Albedo_Quality band recorded in the associated MCD43A2 product. ...
0
votes
0answers
54 views

Time series linear interpolation method for cloud not processing properly in my MODIS dataset

I am trying to perform an interpolation to my 3D array (sub-block of MODIS time series dataset with a shape of (46,960,960)) using numpy linear interpolation method to replace cloud pixels with ...
0
votes
0answers
10 views

Corrupt XML files on LP DAAC server

I have built a Python script to pull MODIS data off the LP DAAC server. The script works fine in most locations, but when I tried to pull data for Bangladesh (h26v06), my code threw errors. I ...
0
votes
0answers
26 views

SDS for quality assurance MODIS data

Can anyone help me with which quality assurance data to use for MODIS MCD43A4? The QA dataset for this is MCD43A2 which has 4 SDS - Science Data Sets (HDF Layers) 4 UNITS BIT TYPE FILL ...
0
votes
0answers
35 views

How to apply/mask QC layer of MODIS15A2 for extracting good quality pixels from Leaf Area Index product

How to mask cloudy/noise pixels of MODIS LAI product (MODIS 15A2). I'm using MODIS 15A2 LAI monthly data for LAI estimation. After reprojection and applying scale factor I want to mask bad pixels of ...
0
votes
0answers
96 views

Reprojecting MODIS NDVI and reading the hdf output file in ENVI

I'm working with ENVI5.3 and want to open a MODIS NDVI (MOD13Q1) in hdf format. Firstly, I used the Modis Reprojeciton Tool to reproject the modis tile. And I opened the reprojected file in hdf format ...
0
votes
0answers
37 views

Using night/day-time LST product of MODIS?

I was confused with the night- and day-time bands of the LST product of MODIS. As I understood, these two bands are derived based on the zenith angle; more than 90 degrees for night-time LST, and less ...
0
votes
0answers
23 views

Wget download selected files in unknown subfolders

I have this script for YEAR in 2013 2014 2015 ; do wget -r -l1 -p -nd -e robots=off -A "h17v03","h18v03" -R .jpg -R .xml http://e4ftl01.cr.usgs.gov/MOLT/MOD13Q1.005/$YEAR.01.01 so it gets 2 ...
0
votes
0answers
32 views

StarFM incompatability in Windows

I was asked to make StarFM, which creates a TimeSeries based on Temporal resolution of MODIS with the spectral resolution of Landsat work. Now, according to the barely-present help, it states that the ...
0
votes
0answers
52 views

Flood extent maps using modis 09 imagery

I have created rgb using bands 1 and 2 (250m) of mod09 data. Now i need to create flood extent maps from the same composite band. Now I need to use the density slicing method to create slices of land ...
0
votes
0answers
103 views

reading raster without making QGIS apply the scale factor to the raster

Since QGIS multiplies the image with the scale factor when reading, it messes up the image if the scale factor is not properly defined to the data as QGIS expected. For example, I am reading MODIS ...
0
votes
0answers
10 views

corrected_Optical_Depth 3 different subdataset in extract window

i am particularly interested in extracting Aerosol data from the hdf packed file. I have to do this over several years so i extract first aerosol_Type_Land witch give a alid Range: 0 to 4 (0=mixed, ...
0
votes
0answers
34 views

ERDAS: Using MODIS Satellite Imagery for Iceberg Detection

I am trying to use MODIS satellite imagery to detect and track icebergs surrounding Antarctica. The software that I am using is Erdas Imagine 2014. I am struggling to differentiate clouds from snow ...
0
votes
0answers
75 views

registering MODIS in GRASS as space-time dataset

I have a problem using the space time module in GRASS GIS (7.1 for Ubuntu). I have a MODIS time series with 8 day interval, so 46 images per year. So I created a file (filelist_grass.txt) containing ...
0
votes
0answers
46 views

Writing Script for establishing parameter files for MRT

I have 15 years of MODIS data that I need to mosaic and resample using the MRT program. But to do so I need to set up parameter files for every date as there are multiple files for every day in the ...