You will learn how to download Landsat 45 images from USGS for free in this video. I hope this video will help you to enhance your knowledge in GIS and Remote Sensing even more. To assess landcover changes, landuse changes, vegetation changes, and Land Surface Temperature (LST) Landsat images are very essential and this video will help you to download the images for free. Through this video you will easily be able to download Landsat 45 images from USGS Earth Explorer website yourself.

Link:
https://www.usgs.gov/landsatmissions...
https://www.usgs.gov/landsatmissions...

Landsat 4 was launched from Vandenberg Air Force Base in California on July 16, 1982 on a Delta 3920 rocket. The sensors onboard the satellite collected data until late 1993, and the satellite was decommissioned on June 15, 2001. Landsat 4 was built and launched by NASA. NOAA initially oversaw the operations of the satellite but was eventually contracted out to the Earth Observation Satellite Company (EOSAT) in 1984. Despite numerous operations transfers, USGS EROS has remained responsible for the record and data keeping of the Landsat program. Although the satellite was set in a lower orbit than Landsat 13, it had a higher field of view to retain the same swath width as its predecessors of 185 km (115 mi). The lower altitude results in a different swathing pattern. With an updated design from the previous three missions, the satellite carried the MSS as well as the new TM instruments. It did not carry the Return Beam Vidicon (RBV) sensor.

Developed by NASA, Landsat 5 was launched from Vandenberg Air Force Base in California on March 1, 1984, and like Landsat 4, carried the Multispectral Scanner (MSS) and the Thematic Mapper (TM) instruments. Landsat 5 delivered Earth imaging data for nearly 29 years— setting a Guinness World Record for 'Longest Operating Earth Observation Satellite,' before being decommissioned on June 5, 2013. Clearly, this satellite outlived its threeyear design.

Unprecedented changes in land cover and use are having profound consequences for weather and climate change, ecosystem function and services, carbon cycling and sequestration, resource management, the national and global economy, human health, and society. The Landsat data series, begun in 1972, is the longest continuous record of changes in Earth’s surface as seen from space and the only satellite system designed and operated to repeatedly observe the global land surface at moderate resolution. Freely available Landsat data provide a unique resource for people who work in agriculture, geology, forestry, regional planning, education, mapping, and global change research.

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