Questions tagged [nasa]
National Aeronautics and Space Administration, a US government agency.
39
questions
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10 views
How can VIIRS-Data be obtained / processed
I am looking for a way to obtain data about avg light-pollution for specific places.
It seemed NASAs https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/VNP46A1/ might be a good ...
0
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0answers
26 views
Date information from point layer of fire occurrence from FIRMS VIIRS not ingesting properly in GEE
I just downloaded a Shapefile which contained point data of fire occurrence from the NASA FIRMS VIIRS database. I immediately ingest the files (.dbf, .prj, .shp and .shx) into Google Earth Engine as a ...
1
vote
1answer
46 views
CORS issues when trying to access NASA layers from ArcGIS JS API
I am trying to bring an ImageMapLayer into an ArcGIS JS API project. The layer is here:
https://maps.disasters.nasa.gov/ags04/rest/services/ca_fires_202008/sentinel2/MapServer
I am creating the layer ...
1
vote
1answer
22 views
NASADEM total dataset size
I've recently started investigating NASADEM for some terrain visualisation tasks, and noticed that the total number of tiles on the Earthdata portal is way fewer than the global ASTER GDEM v003 ...
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0answers
34 views
Opening marine phytoplankton NPP data in QGIS
How can I open these file in QGIS? I am beginner at GIS softwares. My aim is to obtain marine phytoplankton NPP data.
These data are available at oceancolor.gsfc.nasa.gov and www.nodc.noaa.gov, but ...
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0answers
28 views
ArcMap hdf processing
I’ve followed these instructions in the past to get this NASA hdf file (subset “PrecipitationCal”) to render in ArcMap with no problems, but now it no longer seems to work as something has changed.
...
1
vote
1answer
24 views
Land temperature anomaly data from earth observations in R
I am trying to work with the NASA's land temperature anomaly dataset at https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MOD_LSTAD_M&date=2013-01-01
When I am using the extract function on the ...
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0answers
11 views
How to merge MODIS AOD L2 data to L3
I'm working with MODIS AOD L2 data and would like to create daily averages and monthly averages from the data. I'm aware of the L3 product but it doesn't allow me to create an 18 day average of just ...
0
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1answer
18 views
Projects using compatible Sentinel-2 and Landsat-8 reflectance data
Right from the beginning on the Senintel-2 Satellites were constructed to harmonize with the Landsat-8 products in terms of their spatial and spectral capabilities. What I wonder is, if there are ...
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0answers
26 views
NASADEM data around 180th meridian
I am following this thread What is NASADEM and when it will be released? and saw post from @markusN and start to download the data in nc format for few analysis in various countries.
Recently I tried ...
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0answers
30 views
Long trailing “firefronts” showing up on NASA's FIRMS map, looking a bit like rocket launches. Is this a known error?
I don't work in GIS, but I've recently become interested in satellite active fire monitoring, looking to correlate such data with the frequent pollution spikes we've been having in the city I live in. ...
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0answers
25 views
How to extract data from DAAC index
I would like to extract a MODIS land cover dataset, among other things from DAAC. I found this python tool which allows me to feed a URL and automatically download the file, and also this library ...
1
vote
1answer
158 views
Meaning of 'bnds' and dimensions in OCO2 v9 L3 data product
I cannot seem to understand what, for example, 'lat_bnds' means? Same go for 'lon_bnds', lat/lon_dimensions. These values come from the structurally flat NCDF4, sourced from the JPL as a custom ...
0
votes
1answer
978 views
Converting HDF5 to GeoTIFF using GDAL
I'd like to convert a subset from HDF5 to GeoTIFF
The data is OMPS Aerosol Index data (EarthData login to download)
https://snpp-omps.gesdisc.eosdis.nasa.gov/data/SNPP_OMPS_Level2/OMPS_NPP_NMTO3_L2.2/...
4
votes
1answer
4k views
Export data from time-series image collection to a table in Google Earth Engine
On Google Earth Engine, I'd like to accomplish two tasks:
extract data from every pixel, across a time-series, within the given geometry bounds and save it as a table.
I need a column which prints ...
1
vote
0answers
310 views
NASA Web WorldWind - WMS GetFeatureInfo request
I have been looking for ways to make a WMS GetFeatureInfo request using the API of NASA Web WorldWind, however have not achieved yet. I tried picking as below, however this doesn't return the features ...
12
votes
3answers
3k views
What is NASADEM and when it will be released?
I heard some time ago about a new global DEM called NASADEM that was going to be released in 2017, and promised to be the best global DEM to date. What exactly is NASADEM and when will it be available?...
4
votes
1answer
707 views
Getting tile number of sinusoidal MODIS product from lat/long?
I'm using this tool to get the tile number (horizontal/vertical) from lat/long. Is there any code,preferably python, to get the tile number ? I tried using this tool. But it gives wrong tile number. ...
0
votes
1answer
118 views
Unable to download VIIRS images with GIBS API and gdal_translate
I'm trying to download some VIIRS images from GIBS API. I'm using gdal:
gdal_translate -projwin 19.07 42.16 28.39 34.5 -of "GTiff" "viirs.xml" "VIIRS_SNPP_DayNightBand_ENCC.tif"
The viirs.xml file ...
3
votes
1answer
225 views
Using NASA's GIBS servers with GRASS GIS
I am trying to download WMS tiles into a grass mapset. I'd like to use NASA's GIBS servers which replaced the JPL OnEarth services. I'm not sure how much remains the same between the two services, but ...
2
votes
0answers
713 views
Automatically exporting time series of multiple polygons to .csv [duplicate]
I want to export data to a .csv file without having to display the chart. Similar to what is done here.
I want to skip the chart-display part because I'm working with long times series and if I try ...
1
vote
0answers
288 views
Parameters of projection for SMAP data [duplicate]
I need to extract geotiff from SMAP DATA (same without registration)
I found example of gdal_translate command that do this task:
gdal_translate -a_ullr -17334194 7356860 17334194 -7356860 -a_srs ...
3
votes
0answers
221 views
Which STRM resolution Srtm2Osm.exe uses?
The piece of program Srtm2Osm uses SRTM elevation model from NASA to produce countour lines in OSM format.
Does it use the SRTM1 at 30m or SRTM3 at 90m?
4
votes
1answer
555 views
Converting long, lat to tile of NASA GIBS - WGS 84 / Lat-lon / Geographic (EPSG:4326)?
I'm following GIBS API for Developers and I need to convert long, lat of POI to col and row of tile for given zoom. For example to get right tile in endpoint like:
https://gibs.earthdata.nasa.gov/...
1
vote
1answer
168 views
Geolocation of MODIS swath products
When dealing with MODIS swath products (or any swath products from VIIRS, SeaWifs, etc) such as those available here, is there any way of a-priory knowing the location a given file covers?
Typical ...
1
vote
1answer
899 views
Opening data from NSIDC in QGIS?
i download data from here https://nsidc.org/data/SPL2SMP/versions/3#, but i can not open it in QGIS.
Do you know how to open this data in QGIS?
2
votes
2answers
1k views
How does QGIS process a HDF file?
I downloaded a HDF file from here (MOD13Q1). Upon viewing the content I found that the file has 4800X4800 rows/columns(Resolution 250 meters). Now I tried to view the same file in QGIS. Upon zooming ...
2
votes
2answers
92 views
Problems converting GTiff to PDS with gdal
I'm trying to convert a GTiff raster to a PDS raster (NASA Planetary Data System) using gdal_translate with this command:
gdal_translate -of PDS -ot Float32 input.tif output.IMG
But I get this ...
2
votes
1answer
587 views
Resample SMOS dataset using cKDTree and Bilinear interpolation
I have three datasets now. One is SMOS level3 soil moisture dataset which is in EASE grid 2.0 ~25km cylindrical projection. (EPSG: 6933). TRMM precipitation dataset which is in 0.25 degree. SMAP soil ...
2
votes
2answers
1k views
What is the easiest way to create map using HDF-5 data subset?
I need to visualize some area using values provided in HDF-EOS version 5 file and create map using those values and other GIS layers.
Unfortunately, my QGIS do not recognize the HDF5 file.
Do I ...
1
vote
1answer
53 views
Adding NASA WELD Imagery to ArcMap?
How I would add WELD satellite imagery from NASA into ArcMap?
I'd like to take the entire CONUS scan and place it into ArcMap.
I tested a smaller scan of the Northeast, however I got a plethora of ...
1
vote
1answer
454 views
WMS for Active Fire Data from NASA site - Can't connect
I am trying to connect to the WMS service of the Active Fire Data that NASA provides. This is the site: https://firms.modaps.eosdis.nasa.gov/web-services/#firms-wms where I get the links from. My ...
1
vote
1answer
2k views
How to open SMAP's Surface Moisture data files
I downloaded surface moisture data from Nasa's Soil Moisture Active Passive (SMAP) sensor website (https://nsidc.org/data/smap/smap-data.html).
For each processing level (1-4), three types of files ...
2
votes
1answer
103 views
NASA world view (EOSDIS) coverage delay per day - scanning footprint issue?
I noticed that in NASA world view web site it's take some time to get per day world wide coverage.
I made some calculations:
The source is Aqua & Terra satellites
Both have orbital period ...
3
votes
1answer
323 views
Why NASA world view (EOSDIS) have black strips?
There is the famous NASA World View site based on EOSDIS.
I relatively new to this and I wonder why & what are those black strips on the existing coverage? I also notice that the position of the ...
4
votes
1answer
422 views
PointPlacemark label is not hidden by the terrain
I am facing this problem where the label for the pointplacemark using the NASA worldwind API is not hidden behind terrain. The symbol hides but the label doesn't. It uses javax.media.opengl.GL and ...
18
votes
1answer
540 views
What GIS analysis techniques were used in determining Gale Crater as the landing site for the Curiosity Rover?
What specific GIS analysis was used in determining Gale Crater as the landing site for the Curiosity Rover?
I'm assuming factors such as slope, elevation, ruggedness, etc were used as well as ...
3
votes
1answer
499 views
Does NASA DEM contain objects?
Following an answer to my previous question I am planning to work with NASA ASTER GDEM global dataset. I am trying to download it according to instructions given here for a couple of days now.
...
23
votes
6answers
12k views
How to download the entire ASTER GDEMv2 dataset?
In October 2011, NASA released the new ASTER GDEM global dataset (30m) and I have been wanting to get my hands on it. The only problem is that it takes forever to download and I do not feel like ...
