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Virginia Norwood is being posthumously recognized for her role in championing and designing the Multispectral Scanner System (MSS) that flew on ERTS-1, later renamed Landsat 1, and heavily influencing space-based Earth observation. | | |
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January 31, 2025
Understanding Forests After Fire With Landsat and LiDAR
To understand how forests recover after large wildfires, PhD student Sarah Smith-Tripp links Landsat and LiDAR data. She uses Landsat to identify early responses to fire, tracking how these responses map to different trajectories of recovery.
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January 24, 2025
Investigating Urban Heat in the Lower Mekong
Researchers explored urban heat islands in the Lower Mekong Delta. Using 30 years of Landsat data, they found that changing trends in vegetation influence land surface temperature in Bangkok, Ho Chi Minh City, Vientiane, and Phnom Penh.
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January 14, 2025
A cadre of former Landsat Science Team members posit that progress towards global sustainability goals would be substantially aided by 13 essential, regularly-updated global data products made with open-access and freely-available Landsat and Sentinel-2 datasets (Radeloff et al., 2024).
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March 2-4, 2025
Colorado Convention Center
Denver, Colorado
The Landsat team will be at the NASA booth on
Sunday, 3/2 from 3pm-6pm
Monday, 3/3 from 8:30am-4:30pm
Tuesday, 3/4 from 8:30am-3pm
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PUBLICATION SPOTLIGHT
Towards Seamless Global 30-meter Terrestrial Monitoring: Evaluating 2022 Cloud Free Coverage of Harmonized Landsat and Sentinel-2 (HLS) V2.0
| Zhou et al., 2025
Harmonized Landsat and Sentinel-2 (HLS) Version 2.0 combines observations from Landsat 8 and 9 with those from Sentinel-2A and -2B satellites. In a new study (Zhou et al., 2025), a team of researchers—including current and former Landsat science team members, five authors from NASA Goddard Space Flight Center, and one researcher from USGS—evaluated the cloud-free coverage of HLS V2.0 in 2022, the first year that data from all four satellites were available. Inspecting the globe at the pixel level, they identified how frequently HLS V2.0 provided clear, unobstructed observations of the land surface. On average, HLS data provided observations every 1.6 days at the global scale and 2.2 days in data-scarce tropical regions. On a global scale, 50.4% of HLS observations—a mean of 69 observations—were clear in 2022. HLS demonstrates a significant improvement over using either Landsat or Sentinel 2 data alone. Landsat 8 and 9, launched in 2013 and 2021 respectively, together provide an 8-day repeat cycle. Sentinel-2A and Sentinel-2B satellites, launched in 2015 and 2017 respectively, together create a 5-day repeat cycle. As of January, 2024, data from Sentinel-2C replaced data from Sentinel-2A in HLS data. HLS data can support more frequent monitoring of land changes, especially in regions like the tropics where clouds tend to interfere with satellite observations.
| These maps show (a) the total number of observations for 2022 HLS data and (b) the median revisit interval from January 1 to December 31, 2022 for HLS. The greatest number of observations occur in the high northern latitudes, while the lowest number of observations occur in the tropics. Image credit: Zhou et al., 2025 | | |
January 6, 2025
Ghana's Declining Forest Reserves
Logging, farming, and fires have contributed to the loss and degradation of forest reserves in the West African country.
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January 2, 2025
The Many Facets of Söderfjärden
An impact crater in western Finland is a bucolic setting for agriculture and migratory birds—and its geometric shape resembles that of craters on other planets and moons.
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Want to make your own Landsat image?
This tutorial provides step-by-step instructions for how to download Landsat data and create both natural- and false-color images. It also compares various band combinations used for vegetation analysis, fire monitoring, coastal health research, and more.
+ Make your own image
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