Free remote sensing data sources - Revision history

Vruba: Typo fix

2022-07-16T18:11:33Z

Typo fix

Púca: /* Sentinel Playground */

2022-07-16T12:05:14Z

Sentinel Playground

Bmueller: Create headline

2022-07-16T06:41:38Z

Create headline

Bmueller: Add tags

2022-07-16T06:39:28Z

Add tags

Vruba at 04:47, 16 July 2022

2022-07-16T04:47:22Z

Vruba at 04:34, 16 July 2022

2022-07-16T04:34:21Z

Vruba: Link format for real this time

2022-07-16T04:10:13Z

Link format for real this time

Vruba: Link format

2022-07-16T04:09:49Z

Link format

Vruba: Formatting and alphabetization

2022-07-16T04:07:05Z

Formatting and alphabetization

Vruba: Adding Worldview

2022-07-16T04:06:22Z

Adding Worldview

@@ Line 12: / Line 12: @@
 == EarthExplorer ==
-[https://earthexplorer.usgs.gov/ EarthExplorer] is a multi-source query and download tool operated by the US Geological Survey. It gives access to most US federally produced optical remote sensing data from aerial sources and from satellites with less than daily revisit. As a rule of thumb, it has more archival and high to medium resolution data, while WorldView has more realtime and low resolution data.
+[https://earthexplorer.usgs.gov/ EarthExplorer] is a multi-source query and download tool operated by the US Geological Survey. It gives access to most US federally produced optical remote sensing data from aerial sources and from satellites with less than daily revisit. As a rule of thumb, it has more archival and high to medium resolution data, while Worldview has more realtime and low resolution data.
 === Access requirements ===

@@ Line 44: / Line 44: @@
 * In the nested directory in the Data Sets tab, click the “i” icon to get a dataset description. Click the map icon to display the dataset’s footprint on the map, so you can tell whether it covers your general region of interest (though this may take a minute for a dataset with a complex footprint).
-== Sentinel Playground ==
+== Sentinel Hub==
 [https://worldview.earthdata.nasa.gov/ Worldview] is a multi-source visualization, query, and download tool operated by NASA EOSDIS. (It should not be confused with World'''V'''iew, a series of commercial high-resolution satellites from Maxar.) It gives access to most US federally produced remote sensing data from polar satellites with daily revisits. In general these are low-resolution sensors (on the order of 1 km/px) that are focused on topics related to the weather, climate, and environment, for example creating fire maps.
-=== Access requirements ===
+=== Access requirements===
 Public; some features may require a (free) [https://urs.earthdata.nasa.gov/ Earthdata account].
-=== Example workflow ===
+===Example workflow===
 # Click the orange + Add Layers button on the left sidebar.
-# Navigate to Air Quality → Fires and Thermal Anomalies and click it.
+#Navigate to Air Quality → Fires and Thermal Anomalies and click it.
-# Click the checkbox by Aqua and Terra/MODIS → Fires and Thermal Anomalies (Day and Night).
+#Click the checkbox by Aqua and Terra/MODIS → Fires and Thermal Anomalies (Day and Night).
-# Close the dataset chooser overlay (returning to the map view).
+#Close the dataset chooser overlay (returning to the map view).
 # Move the date playhead (arrow) at the bottom of the window to yesterday or before (to allow time for data processing).
-=== Highlights ===
+===Highlights===
-* “Earth at Night” data: Suomi NPP/VIIRS Day/Night Band and its derivatives, which are low-res but allow quick insight into events like power outages, gas field operations, etc.
+*“Earth at Night” data: Suomi NPP/VIIRS Day/Night Band and its derivatives, which are low-res but allow quick insight into events like power outages, gas field operations, etc.
-* Some access to geostationary imagery.
+*Some access to geostationary imagery.
-=== Limits ===
+===Limits===
-* Although it has significant download capability, it’s generally more oriented toward in-browser visualization.
+*Although it has significant download capability, it’s generally more oriented toward in-browser visualization.
-* Very little data available through Worldview is sharper than about 250 m/pixel.
+*Very little data available through Worldview is sharper than about 250 m/pixel.
-=== Tips ===
+===Tips===
-* The main polar imaging instruments, MODIS on the Aqua and Terra satellites and VIIRS on Suomi NPP and NOAA-20, provide a richly multispectral 4-frame animation over midday for basically everywhere that is not in polar night or the gap between swaths. Although it’s low-res, it can be valuable for, e.g., using cloud configurations to pin down times of images.
+*The main polar imaging instruments, MODIS on the Aqua and Terra satellites and VIIRS on Suomi NPP and NOAA-20, provide a richly multispectral 4-frame animation over midday for basically everywhere that is not in polar night or the gap between swaths. Although it’s low-res, it can be valuable for, e.g., using cloud configurations to pin down times of images.
-== Vertex ==
+==Vertex==
 [https://search.asf.alaska.edu/#/ Vertex] is a multi-source query, download, and limited analysis tool for SAR (synthetic aperture radar) data, operated by the University of Alaska and NASA. Most but not all significant public domain SAR datasets are available through it.
-=== Access requirements ===
+===Access requirements===
 Public with a (free) [https://urs.earthdata.nasa.gov/ Earthdata account].
-=== Example workflow ===
+===Example workflow===
-# Log in.
+#Log in.
-# Draw a rectangle over your area of interest.
+#Draw a rectangle over your area of interest.
-# Click the UPDATE button in the top bar (accepting the defaults). After the search runs, a list browser will pop up from the bottom.
+#Click the UPDATE button in the top bar (accepting the defaults). After the search runs, a list browser will pop up from the bottom.
-# Click a SAR scene with a preview image in the left column of the list browser.
+#Click a SAR scene with a preview image in the left column of the list browser.
 # Click the larger preview image that appears in the middle column (your cursor will change to a magnifying glass). Pan and zoom at will, then close the preview viewer.
 # In the right column, click the download icon (the cloud with an arrow) next to L1 Detected High-Res Dual-Pol (GRD-HD).
-=== Highlights ===
+===Highlights===
-* Sentinel-1 data is the backbone of Vertex’s datasets: dual-polarization, lowish-resolution, land-oriented, survey-mode SAR data.
+*Sentinel-1 data is the backbone of Vertex’s datasets: dual-polarization, lowish-resolution, land-oriented, survey-mode SAR data.
-* SeaSat data! Coverage is [https://asf.alaska.edu/data-sets/sar-data-sets/seasat/seasat-swath-coverage-maps/ very sparse], but it’s of historical significance, and if you ever want to know what your AOI looked like in L-band SAR in 1978, good luck finding a better source.
+*SeaSat data! Coverage is [https://asf.alaska.edu/data-sets/sar-data-sets/seasat/seasat-swath-coverage-maps/ very sparse], but it’s of historical significance, and if you ever want to know what your AOI looked like in L-band SAR in 1978, good luck finding a better source.
-* [https://docs.asf.alaska.edu/api/basics/ Good API] access.
+*[https://docs.asf.alaska.edu/api/basics/ Good API] access.
-=== Limits ===
+===Limits===
-* Direct download is fairly slow.
+*Direct download is fairly slow.
-* Access to some datasets requires authorization (i.e., showing that it’s part of a credible research project and potentially agreeing to a no-redistribution license).
+*Access to some datasets requires authorization (i.e., showing that it’s part of a credible research project and potentially agreeing to a no-redistribution license).
-=== Tips ===
+===Tips===
-* If you’re on reasonably good broadband, the direct download option is not optimal. Instead, use the “shopping cart” feature. Add your items to the cart, then select “Metadata (metalink)” from the shopping cart’s Data Download menu. Use .metalink file it provides with a tool like [https://aria2.github.io/ aria2]. Downloading this way is far faster; it will saturate a 100 MiB/s connection.
+*If you’re on reasonably good broadband, the direct download option is not optimal. Instead, use the “shopping cart” feature. Add your items to the cart, then select “Metadata (metalink)” from the shopping cart’s Data Download menu. Use .metalink file it provides with a tool like [https://aria2.github.io/ aria2]. Downloading this way is far faster; it will saturate a 100 MiB/s connection.
 [[Category:Radar]]
 [[Category:SAR]]

← Older revision		Revision as of 06:41, 16 July 2022
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		+	This page lists some common sources and ways to access publicly-available [[Remote Sensing\|remote sensing]] data.
		+
	== Directories ==		== Directories ==

← Older revision		Revision as of 06:39, 16 July 2022
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	* If you’re on reasonably good broadband, the direct download option is not optimal. Instead, use the “shopping cart” feature. Add your items to the cart, then select “Metadata (metalink)” from the shopping cart’s Data Download menu. Use .metalink file it provides with a tool like [https://aria2.github.io/ aria2]. Downloading this way is far faster; it will saturate a 100 MiB/s connection.		* If you’re on reasonably good broadband, the direct download option is not optimal. Instead, use the “shopping cart” feature. Add your items to the cart, then select “Metadata (metalink)” from the shopping cart’s Data Download menu. Use .metalink file it provides with a tool like [https://aria2.github.io/ aria2]. Downloading this way is far faster; it will saturate a 100 MiB/s connection.
		+	[[Category:Radar]]
		+	[[Category:SAR]]
		+	[[Category:Guide]]
		+	[[Category:List]]
		+	[[Category:Remote Sensing]]

← Older revision		Revision as of 04:47, 16 July 2022
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		+	== Directories ==
		+
		+	* [https://github.com/nickrsan/awesome-public-datasets/ Awesome Public Datasets] from Nick Santos. Goes well beyond remote sensing, but there’s much of OSINT interest.
		+	* [https://docs.google.com/spreadsheets/d/1oFY_TX5QRFyAAu-nxeClnOFB1epSlSDWEHoMalvv0Qs/edit#gid=0 Sources of Satellite Data].
		+	* NOAA NCEI’s [https://www.ncei.noaa.gov/maps-and-geospatial-products Maps and Geospatial Products].
		+	* [https://opendatainception.io/ Open Data Inception].
		+
		+	''Feel free to take items from these sources and expand them below.''
		+
	== EarthExplorer ==		== EarthExplorer ==

← Older revision		Revision as of 04:34, 16 July 2022
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	== Vertex ==		== Vertex ==
		+
		+	[https://search.asf.alaska.edu/#/ Vertex] is a multi-source query, download, and limited analysis tool for SAR (synthetic aperture radar) data, operated by the University of Alaska and NASA. Most but not all significant public domain SAR datasets are available through it.
		+
		+	=== Access requirements ===
		+
		+	Public with a (free) [https://urs.earthdata.nasa.gov/ Earthdata account].
		+
		+	=== Example workflow ===
		+
		+	# Log in.
		+	# Draw a rectangle over your area of interest.
		+	# Click the UPDATE button in the top bar (accepting the defaults). After the search runs, a list browser will pop up from the bottom.
		+	# Click a SAR scene with a preview image in the left column of the list browser.
		+	# Click the larger preview image that appears in the middle column (your cursor will change to a magnifying glass). Pan and zoom at will, then close the preview viewer.
		+	# In the right column, click the download icon (the cloud with an arrow) next to L1 Detected High-Res Dual-Pol (GRD-HD).
		+
		+	=== Highlights ===
		+
		+	* Sentinel-1 data is the backbone of Vertex’s datasets: dual-polarization, lowish-resolution, land-oriented, survey-mode SAR data.
		+	* SeaSat data! Coverage is [https://asf.alaska.edu/data-sets/sar-data-sets/seasat/seasat-swath-coverage-maps/ very sparse], but it’s of historical significance, and if you ever want to know what your AOI looked like in L-band SAR in 1978, good luck finding a better source.
		+	* [https://docs.asf.alaska.edu/api/basics/ Good API] access.
		+
		+	=== Limits ===
		+
		+	* Direct download is fairly slow.
		+	* Access to some datasets requires authorization (i.e., showing that it’s part of a credible research project and potentially agreeing to a no-redistribution license).
		+
		+	=== Tips ===
		+
		+	* If you’re on reasonably good broadband, the direct download option is not optimal. Instead, use the “shopping cart” feature. Add your items to the cart, then select “Metadata (metalink)” from the shopping cart’s Data Download menu. Use .metalink file it provides with a tool like [https://aria2.github.io/ aria2]. Downloading this way is far faster; it will saturate a 100 MiB/s connection.

@@ Line 20: / Line 20: @@
 * ISRO '''Resourcesat''' data – rarely the best available data in terms of resolution, but often overlooked, and sometimes able to fill a crucial gap in better-known sources.
 * Excellent aerial (high resolution) coverage of the continental US, for example with NAIP.
-* A scattershot, relatively small, yet occasionally useful collection of commercial imagery licensed for open redistribution. For example, coverage of the Korean Peninsula in the mid-2000s with [https://www.usgs.gov/centers/eros/science/usgs-eros-archive-commercial-satellites-orbview-3).
+* A scattershot, relatively small, yet occasionally useful collection of commercial imagery licensed for open redistribution. For example, coverage of the Korean Peninsula in the mid-2000s with [https://www.usgs.gov/centers/eros/science/usgs-eros-archive-commercial-satellites-orbview-3 OrbView-3 data].
 === Limits ===

@@ Line 7: / Line 7: @@
 Public with a (free) [https://urs.earthdata.nasa.gov/ Earthdata account].
-=== Basic instructions ===
+=== Example workflow ===
 # Create an Earthdata account and log in.
@@ Line 36: / Line 36: @@
 == Vertex ==