The neat thing about this is that it is the most precise global-scale elevation data at this time. After approval, you can download it through the download portal.
The interface is intuitive and delivers free low-resolution satellite data at your fingertips. To download data, select your area of interest. Define your data set to download. And sift through the results. You have benthic, elevation, imagery, land cover, and socio-economic data. You get a range of free satellite imagery to choose from such as radar, infrared, and true color composites.
We have never had this good of a perspective of our changing planet because of satellite imagery. Some of the biggest challenges we face today are best understood through satellite land cover.
This is because remote sensing covers that much more ground. Their main goal is to support scientific research using geodesy technology. For example, think of flooding, plate tectonics, and earthquakes. Instead of spending days searching for a good base map, you can tap into this list of free satellite imagery data. It looks like Landsat 9 is set to launch in September It will have similar specifications to Landsat 8.
Its visible red, green, and blue bands will have a meter resolution, plus one panchromatic band at 15 meters. Is there any news about Landsat 9? What are its specs and when can we start seeing some of its data?
Just in , the US government softened restrictions for sharper imagery available to the public. Now, the general public can obtain 50cm 0. Try now! Remote sensing Reselling. Articles Recent articles. Wildfire Prevention: How To Prevent Forest Fires Forest fires cause whopping losses globally every year and often start due to human-related ignition. Remote sensing. I Accept. First Name. Last Name. Company Name. Yes, Landsat imagery would go that far back.
Do your images go back that far and would I be able to see if the yard is fenced? Are contours and spot heights obtained from topo sheets of more than 50 years be useful today, in designing an effective water supply distribution network in urban centers in tropical counties like Nigeria, considering the degradational and aggradational activities that have taken place over the years?
What is also the base map used for? You also chose a great plugin to work with in QGIS. Thank you very much for this excellent entry, and for the entire site. As such, I have a newbie type of question: In the Download options, aside from the. Is it correct to use this file format? As far as I understand, the quality and resolution is lesser, but for simple land cover classification excercises, I was wondering if it is enough.
I need. Know anything about this? Thanks for all the answers. I followed, but in digital elevation they have removed lidar.
Searching for criteria no one has las or lidar. In the zip file there are 12 TIFs; all are ,, except one which is ,, None are in color. My mission is to obtain one high quality color aerial photo. How high resolution do you need? LiDAR is the highest it gets.
But coverage gets sparse compared to the global SRTM. Here are your best options for LiDAR. Yes, you can preview LiDAR in here. However, resolution is likely downgraded.
Be sure to look at our free LiDAR sources here. Alaska Geospatial Data Clearinghouse. Viewfinder Panoramas. Equador DEM Data. This 9 arc-second m DEM data is available from:. Since it is easy to screen capture the images, this may qualify as a free data source.
Local bathymetry data is also available from widely disparate sources. Check the NOAA web site but there appear to be tons of disparate sources. Mars Express Imagery Page. Mars Laser Altimetery Data. High Resolution Imaging Science Experiment. Mars Viking data may be obtained at thanks to a pointer from Tony Standley :.
There are possibly a few other sources for free DEM data but I think I covered all the most useful types. I would certainly welcome any pointers to additional free sources and will post them if received. World Wind Central. This is the best site for beginners.
Easy user interface, great true-color images in a friendly format jpg. It will even provide the corresponding NIMA air navigation map and overlay your satellite image.
Drawbacks: incomplete coverage, lots of clouds in many images, high camera obliquity for many images. Definitely worth checking out. Absolutely great for school kids and in fact aimed at this audience. Global Land Cover Facility. However, the Landsat 7, MODIS and other datasets can be daunting for the inexperienced, so beginners can expect to spend many many hours producing images from this data.
Some of the issues to be dealt with: the data is presented in multiple bands spanning the ir, visible and uv electro magnetic spectra. Band data is contained in files each of which is tens of megabytes large.
Creating true color RGB images takes a bit of work and a lot of computing power. However, this is one of the most important data sets for researchers and also for terrain modelers. See the article on this site.
Unfortunately, USA only. Global coverage; spectacular images composed of Landsat TM bands 7, 4 and 2. With minimized atmospheric effects and enhanced pixel accuracy, this basemap provides data for deeper spectral analysis.
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View of the towering coastal redwoods in the Redwood National Park adjacent to patches of recently clearcut forests. This product leverages advanced image processing techniques on PlanetScope imagery to remove atmospheric effects, optimize pixel accuracy, and empower deep spectral and quantitative analysis.
Access Basemaps efficiently online in a variety of formats. Planet integrates 1. Planet's Global Basemap provides complete coverage over the Earth's landmass. Unlike traditional mosaics, Planet allows you to build basemaps using the most recent satellite imagery over your areas of interest, with updates at the frequency you need.
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