Questions tagged [nasa]

National Aeronautics and Space Administration, a US government agency.

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Hotspot identification - FIRMS by NASA

I am new to Remote Sensing and Fire Management Resources. FIRMS by NASA gives real time active fire locations. There is a tab Archive Download > Download yearly summary by country > There are ...
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2 votes
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SMAP projection

I want to know how to convert the lat/lon fields in NASA's SMAP soil moisture data in HDF format to EPSG:4326. Lat/lon fields in the SMAP HDF files contain 'Latitude/longitude of the center of a 9-km ...
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Getting the real pixel size from scan and track

I'm using FIRMS's Fire data, and in the datasheet, they note two values per reading: Scan and Track. They say that those two values reflect the actual pixel size. How to use them to obtain the "...
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3 votes
1 answer
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Group 3Hour data GLDAS to daily results for multiple Sites at the same time to Export as CSV,

I need to extract data from multi Sites, and have a value for each one of them, because they are in differents regions. This code works, but it gives me only the mean value for all the sites. How ...
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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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How to get ICESAT-2 ATL03 elevation photons over range of dates?

Anyone familiar with Open Altimetry? I'm trying to download all available elevation (ATL03) data for an AOI. I'm interested in seeing if I can interpolate a DTM from the photon data. The trouble is ...
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1 vote
1 answer
82 views

Accessing historical precipitation data outside of GEE

I'm looking for historical and also present climate data for some polygons I have. I would like to be able to access rainfall data for these points. I cannot use GEE and was struggling to find a good ...
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1 vote
1 answer
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Extract 3 hourly GLDAS data at particular point of time on daily time step from Google Earth Engine

The GLDAS data is at 3 hourly timesteps starting from 3, 6, 9, 12, 15, 18, 21, and 24 UTC. and I want to extract the time series of Downward short-wave radiation flux at 12 UTC only for each day as it ...
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2 votes
1 answer
845 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 ...
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1 vote
1 answer
53 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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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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1 vote
1 answer
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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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1 answer
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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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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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32 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 ...
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1 vote
1 answer
443 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 ...
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1 vote
1 answer
3k 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/...
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6 votes
1 answer
6k 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 ...
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1 vote
0 answers
353 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 ...
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12 votes
3 answers
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?...
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4 votes
1 answer
1k 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. ...
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  • 449
0 votes
1 answer
143 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 ...
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3 votes
1 answer
260 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 ...
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2 votes
0 answers
852 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 ...
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2 votes
0 answers
346 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 ...
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3 votes
0 answers
257 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?
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4 votes
1 answer
745 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/...
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1 vote
1 answer
180 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 ...
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1 vote
1 answer
1k 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?
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2 votes
2 answers
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 ...
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2 votes
2 answers
104 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 ...
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2 votes
1 answer
679 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 ...
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2 votes
2 answers
2k 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 ...
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1 vote
1 answer
54 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 ...
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1 vote
1 answer
480 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 ...
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1 vote
1 answer
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 ...
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2 votes
1 answer
106 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 ...
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3 votes
1 answer
348 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 ...
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4 votes
1 answer
437 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 ...
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18 votes
1 answer
565 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 ...
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3 votes
1 answer
574 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. ...
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24 votes
6 answers
13k 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 ...
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