Revision History for FS 2021-3017 U.S. Geological Survey Texas and Landsat ----------------------------------------------------- Posted online March 30, 2021 ----------------------------------------------------- Revised and reposted October 17, 2022, version 1.1 The State image on p. 1 was changed from a Landsat 7 image to a Landsat 8 image. In the second paragraph, one sentence (“It is also home to one of the planet’s largest wind farms which has more than 100,000 acres of turbines and provides as much as 45 percent of the State’s electricity.”) was removed. In the fourth paragraph, one sentence (“And as a free and open data source, Landsat makes a particularly cost-effective tool.”) was removed. In the image caption on p. 1, “Gulf” was changed to lowercase. Image credits were added to the end of the caption. On the images, dates were added. In the “Mapping Change to Texas Coastlines” section, an in-text citation (“Xu, 2018”) was added to the end of the paragraph. In the “Tracking Urban Heat from Above” section, two in-text citations (“Aniello and others, 1995” and “Zhao and others, 2020”) were added. In the “Measuring and Managing Water Use” section, text was revised from “State’s water used by” to “State’s water is used by.” Two sentences (“A 2014 study demonstrated the effectiveness of Landsat in estimating ET in the Texas High Plains, offering a means for water-use tracking without placing and maintaining costly surface-based flux towers. The long time series of Landsat data supports long-term trend analysis.”) were deleted. One sentence was revised from “A 2019 study on the Upper Rio Grande River Basin, which includes parts of west Texas, measured ET rates from 1986 through 2015.” to “A 2019 study on the Upper Rio Grande River Basin, which includes parts of west Texas, measured ET rates from 1986 through 2015 using the long time series of Landsat data to reveal long-term regional crop water-use patterns (Senay and others, 2019).” One sentence (“The Landsat program also produces tools such as Dynamic Surface Water Extent, which make it easy for water managers and researchers to pinpoint meaningful changes in streamflow and lake area over time.”) was removed. In the figure related to this section, an in-text ciation ("Senay and others, 2019") was added. In the "Landsat--Critical Information Infrastructure for the Nation" section, the sentence "Local, State, and Federal agencies use Landsat to monitor and forecast a wide range of land surface phenomena." was changed to "Local, State, Tribal, and Federal agencies use Landsat to monitor and forecast a wide range of land surface phenomena." In the second paragraph of this section, "space imaging" was hyphenated and the in-text citation "Straub and others, 2019" was added. The third paragraph was changed from "Landsat 7 and Landsat 8 provide 8-day repeat coverage of the Earth’s land surfaces. Landsat 9, which will replace the aging Landsat 7, is under development for launch in 2021. The National Aeronautics and Space Administration (NASA) and the USGS are currently reviewing the findings from a joint Architecture Study Team, which will inform the design and implementation approach for Landsat Next, the follow-on mission to Landsat 9. Landsat 9 and its successors will provide a sustainable, space-based system to extend the nearly 50-year Landsat series of high-quality global land imaging measurements--the world’s longest time series of the Earth’s land surface." to "Landsat 8 and Landsat 9 provide 8-day repeat coverage of the Earth’s land surfaces. The National Aeronautics and Space Administration (NASA) and the USGS are currently reviewing the findings from a joint Architecture Study Team, which will inform the design and implementation approach for Landsat Next, the follow-on mission to Landsat 9. Landsat 9 and its successors are planned to provide a sustainable, space-based system to extend the 50-year Landsat series of high-quality global land imaging measurements—the world’s longest time series of the Earth’s land surface." A "References Cited" section was added.