Urban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
Eyes on Earth
Eyes on Earth is a podcast on remote sensing, Earth observation, land change and science, brought to you by the USGS Earth Resources Observation and Science (EROS) Center.
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Click on an episode title below to visit the episode page. Episode pages include related content, transcript access, and full episode credits.
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The Eyes on Earth podcast is currently hosted by Tom Adamson, Jane Lawson, and Sheri Levisay (contractors for USGS EROS). Episodes are produced by Tom Adamson. Past hosts include John Hult and Steve Young (contractors for USGS EROS). Past producers include John Hult and Brian Hauge (contractors for USGS EROS).
Latest Episodes
Episode 117 – Preparing for Landsat Next, Part 1
In this episode, we talk with several people involved with the next Landsat mission. In Part 1, we’ll hear about how different Landsat Next will be from previous Landsat missions and how its additional spectral bands, higher resolution, and 6-day revisit will benefit science and society. Addressing the needs of the Landsat user community was a high priority in developing the mission, so we talk about what scientists are really looking forward to with Landsat Next. The upcoming Part 2 episode will share details about technical preparations, such as the ground system and data processing and validation.
Guests: Tim Newman, USGS Program Coordinator for National Land Imaging; Zhuoting Wu, USGS Earth Observation Applications Coordinator for National Land Imaging; Chris Crawford, USGS Research Physical Scientist
Episode 116 – Landsat Images the Twilight Zone
Landsat has documented changes all over the world for over 50 years. Changes in polar regions are happening especially rapidly. But it’s dark in polar regions much of the time. Therefore, a new acquisition scheme is adding more imagery of these dark, polar regions so these changes can be studied in more detail, even in polar twilight. In this episode, we learn about this project, called the Landsat Extended Acquisition of the Poles (LEAP).
Guest: Dr. Chris Crawford, USGS Research Physical Scientist
Episode 115 – EROS Women in Science
Women have been crucial to the EROS workforce from the very beginning in a variety of areas, from customer service and computers to film processing and administration. In this episode of Eyes on Earth, we’re highlighting the science work that women have been part of, which includes plenty of variety on its own, including the mapping of landscapes and wildfire burn severities and monitoring water. Our guests include June Thormodsgard, who worked at EROS from 1979-2012 and shares about the past while offering advice for women working now at EROS.
Guests: June Thormodsgard, retired from USGS EROS; current EROS scientists Calli Jenkerson, Kristi Sayler, Jess Brown, Heather Tollerud, Jen Rover, Birgit Peterson and Stefanie Kagone; and USGS’ Jenn Lacey, formerly of EROS.
Episode 114 – The Color of Water with Landsat
Typically, we use Landsat data to study changes on the land—you know, Landsat. In this episode of Eyes on Earth, we learn how satellite images and pixels of water, along with actual water samples, are helpful in determining the productivity of lakes across the United States. We talk with Mendenhall Fellow and Research Geographer Dr. Michael Meyer about a recently released, freely accessible dataset that uses a metric called lake trophic state to validate the Landsat observations of thousands of lakes. The dataset was also named a USGS Open Science Success Story as part of the White House Office of Science and Technology Policy’s 2023 “Year of Open Science” campaign.
Guest: Dr. Michael Meyer, Mendenhall Fellow and Research Geographer, USGS
Episode 113 – EROS Science Leader’s Vision
Terry Sohl helped develop the National Land Cover Database, NLCD, when he first arrived, and now he’s overseeing significant improvements to the widely used product. But that’s just one part of his new role. In this episode of Eyes on Earth, Sohl provides an overview of the science efforts at EROS and how artificial intelligence and machine learning help scientists focus more on the work that helps society. He also shares his vision for the future.
Guest: Terry Sohl, Chief of the USGS EROS Integrated Science and Applications Branch
Episode 112 – Landsat in Popular Media
In this episode of Eyes on Earth, we aim to separate science fiction from science fact when it comes to how Landsat satellites and the EROS Center are portrayed in popular media. To do that, we consulted experts on a range of potential uses, including military, heat signatures, paleontology, and forests.
Guests: Keith Masback, Landsat Advisory Group; Ron Risty, EROS alumnus; George Xian, EROS research physical scientist; Robert Anemone, professor at the University of North Carolina, Greensboro; and Chris Barber, EROS research physical scientist
Episode 111 – Mendenhall Fellow’s Drought Forecasting
In this episode, we spoke to Mikael Hiestand, a Mendenhall Postdoctoral Fellow. Using algorithms developed at EROS, Mikael is working on near-term drought forecasting. With synthetic Landsat data, he found that predicting evapotranspiration could be used as a means of drought prediction and monitoring. The Mendenhall Fellowship allows people who have just completed their PhD an opportunity to work on research with USGS scientists and prepare for their career.
Guest: Mikeal Hiestand, USGS Mendenhall Postdoctoral Fellow and Research Physical Scientist
Episode 110 – Geospatial Information Response Team
First responders need reliable, accurate mapping capabilities as quickly as possible in the wake of a disaster—and they don’t have time to download and organize it. In this episode, we learn how the USGS Geospatial Information Response Team draws data from multiple sources to show what an area looked like before an event as well as after, creating accessible, usable maps and data sets for those bringing relief.
Guests: Lance Clampitt and Alexandra Fredericks of the USGS Geospatial Information Response Team
Episode 109 – Fall 2023 EROS Poster Session
In this episode, we hear from several EROS staff members and university graduate students who took part in our Fall Poster Session. Lively conversations filled the EROS atrium during the hour-long event. Participants got to learn from one another as they shared their work. We talked to a few of them to get quick summaries of their research.
Guests: Belinda Apili (graduate student, South Dakota State University), Khushboo Jain (graduate student, University of South Dakota), Naeem Malik (graduate student, South Dakota State University), Stefanie Kagone (ASRC Federal Data Solutions, contractor to USGS EROS), Abby Miller (C2G, contractor to USGS EROS), Steve Boyte (USGS EROS), Sakshi Saraf (graduate student, University of South Dakota), Zack Schild (graduate student, University of South Dakota), Ubaid Janjua (graduate student, South Dakota State University)
Episode 108 – Landsat 8’s 100th Drag Make-Up Maneuver
The Landsat Program is considered the gold standard for satellite Earth-observation imagery. To keep it that way, the USGS EROS Flight Operations Team continually monitors the flight paths of the Landsat satellites to make sure they stay at a consistent 705-kilometer altitude. That means frequently speeding it up to counter the effects of atmospheric drag. But that’s not all. The team accounts for solar activity, space junk, and other factors to keep the satellites safe. Landsat 8’s 100th Drag Make-Up maneuver in October 2023 gives us the opportunity, in this episode, to talk about these and the other maneuvers the flight team executes and how they work.
Guest: Larry Tornabene, Flight Systems Manager for Landsat 8
Episode 107 – EROS 50th: Land Cover, Part 2
The National Land Cover Database (NLCD) has a long history as the definitive U.S. land cover product. But the newer Land Change Monitoring, Assessment and Projection (LCMAP) effort takes a longer look back in time. In this episode, we learn how the two projects at EROS, both based on 30-meter resolution Landsat satellite data, are merging to bring the strengths of each to future data releases under the NLCD name. This is the second of two episodes discussing land cover work at EROS, with the first focused on earlier pioneering efforts.
Guests: Terry Sohl, Research Physical Scientist at USGS EROS, and Jon Dewitz, Physical Scientist at USGS EROS
Episode 106 – EROS 50th: Land Cover, Part 1
Several decades ago, EROS employees were pioneers in land cover mapping—turning satellite imagery into a record of what covers the land, from farmland to forest to urban areas. National and global datasets with a variety of uses resulted from these efforts. In this episode, we explore some of this history, along with how it benefited people at the time and the mapping efforts that would follow. Our next episode will look at two modern efforts at EROS, NLCD and LCMAP, and how their strengths are merging for the next generation of land cover and change products.
Guest: Jesslyn Brown, longtime research geographer at USGS EROS
Episode 105 – Imagery Challenges of Alaska
In this episode, we focus on Alaska. Rich in wildlife and natural resources, not to mention its sheer size, Alaska has long been a source of fascination for remote sensing scientists. But it is also a source of frustration, with frequent cloud and snow cover and months of darkness each year. Three EROS researchers well versed in interpreting Landsat imagery from Alaska shared their insights about the Last Frontier.
Guests: Donna Viola, formerly of the Land Change Monitoring, Assessment and Projection (LCMAP) project, Jon Dewitz, the coordinator for the National Land Cover Database (NLCD) at EROS, and Neal Pastick, a physical scientist at EROS.
Episode 104 – EROS 50th: Alumni and Friends, Part 2
At the USGS EROS 50th anniversary events August 17-19, 2023, a special effort was made to include alumni who had worked at the center, especially those from the earliest years of EROS’ existence. This episode highlights their stories, with emphasis on science, technology and EROS’ international outlook.
Guests: Ron Beck, Ron Risty, Jeff Eidenshink, Bruce Millett, Dave Greenlee, Darrell Napton, Curtis Woodcock and Jim Irons
Episode 103 – EROS 50th: Alumni and Friends, Part 1
At the USGS EROS 50th anniversary events August 17-19, 2023, a special effort was made to include alumni who had worked at the center, especially those from the earliest years of EROS’ existence. This episode highlights their stories, with emphasis on EROS’ history and its dedicated employees.
Guests: Dave Greenlee, Tom Earley, Charles Luden, Ron Beck, Rhonda Watkins, Chris McGinty, Mary O’Neill, John Faundeen and Frank Kelly
Episode 102 – LANDFIRE 2022 Update
LANDFIRE, short for Landscape Fire and Resource Management Planning Tools, is a key national data source for the management of wildfires, management of the plant materials that fuel fires, and planning for prescribed fires across all 50 states and the U.S. territories. The data products, partly derived from satellite imagery, are generated at EROS through a partnership between the Department of the Interior and the U.S. Forest Service, with The Nature Conservancy as an additional partner. In this episode, we learn about how LANDFIRE is including more up-to-date information than ever about disturbances to the land.
Guest: Inga La Puma, a USGS EROS contractor at the time of the recording but now with the USDA Forest Service, still as a LANDFIRE fire scientist
Episode 101 – EROS 50th: Director Pete Doucette Looks Ahead
EROS Center Director Pete Doucette has been at EROS for a fairly short stretch of the center’s 50-year history, but his passion for the mission of EROS and its opportunities in the future are clear in this episode. He shares the historic event he would have enjoyed being part of in the past, and he gives insights about remote sensing work at EROS going forward.
Guest: Pete Doucette, EROS Center Director
Episode 100 – EROS 50th: Our Legacy
As USGS EROS turns 50 this month, our podcast also marks a big moment: Episode 100. To celebrate, we bring together some treasured moments from previous episodes in which people inside and outside of EROS share their thoughts on EROS and its role in the world of remote sensing, including as keeper of all Landsat satellite data.
Guests: Tom Loveland, Mike O’Brien, Greg Stensaas, Mike Budde, Chris Funk, Kristi Kline, Barb Ryan, Curtis Woodcock, Chris Barber, Dennis Helder, Francis Dwomoh, Roger Auch, Heather Tollerud, Todd Taylor, Volker Radeloff, Mary O’Neill, Steve Covington, Zhe Zhu, Ann Tripp, Jon Christopherson
Episode 99 – EROS 50th: Interns Who Stayed
EROS has a long history of reaching out to universities to welcome interns who can both contribute to the center and gain valuable skills and experience. A good number of them went on to spend their careers at EROS, some for more than three decades. In this episode, these interns who stayed emphasized above all the mission—observing Earth remotely, recording the changes and applying those to science—as their motivation for remaining at EROS. However, all of them also mentioned another key word that inspired them to stay: camaraderie.
Guests: Jesslyn Brown, Susan Embrock, Kristi Sayler, Roger Auch
Episode 98 – EROS 50th: Conservation
In this episode, we talk about the 50-year history of EROS efforts to preserve the environment and conserve energy. EROS was born in the ’70s, the same decade as Earth Day, the EPA, and the oil crisis. Environmentally conscious decisions implemented by both the EROS Center and the employee association include reclaiming silver from photo processing, using solar panels to heat the water needed for that process, and starting a vanpool.
Guests: Brent Nelson, Information and Management Services Operations Work Manager and contractor for USGS EROS; Tim Smith Information Management Services Archive Task Lead and contractor for USGS EROS; and Tracy Michel, USGS Safety and Occupational Health Specialist
Episode 97 – EROS 50th: Earth As Art
Satellites capture an incredible variety of views of Earth. In this episode, we talk with the three engineers at USGS EROS who started the USGS Earth As Art project. The Earth As Art origin story is an example of the initiative and creativity of EROS staff. This stunningly visual product grabs the public’s attention—and then leads to conversations about the value of remote sensing with satellites.
*Be sure to listen to the bonus material—the guests talk about their favorite Earth As Art images.
Guests: Jon Christopherson, Principal System Engineer, contractor for USGS EROS; Ron Hayes, Digital Data Technical Lead, contractor for USGS EROS; Pat Scaramuzza, Senior Scientist, contractor for USGS EROS
Episode 96 – Generational Science
In this episode, we talk with Peder Nelson about generational science and the responsibility we have to future generations to study our changing planet. It takes more than just data to make sense of land change. And while remote sensing scientists work with the deep archive of Landsat and other land data available from the USGS EROS Center, everyone can put themselves on the timeline of Landsat data. Citizen science projects allow anyone to participate in the observations that help us understand the world around us.
Guest: Peder Nelson, Oregon State University
Episode 95 – EROS 50th: Landsat Science Team
The members of the five-year Landsat Science Teams, led jointly by the USGS and NASA with a strong tie to EROS, have brought a wide breadth of expertise, backgrounds and geographic locations to the table. In this episode, we learn how members have explored strategies for the effective use of archived Landsat data and integration of future data, and how they have helped identify Landsat user needs for upcoming satellite sensors, including those on the future Landsat Next.
Guests: Curtis Woodcock, Boston University and 4 terms on Landsat Science Team; Mike Wulder, Canadian Forest Service and 3 terms on Landsat Science Team; David Roy, Michigan State University professor and 2 terms on Landsat Science Team
Related Content
Find past episodes and their episode pages below.
Click on an episode title to visit the episode page. Episode pages include related content, transcript access, and full episode credits.
Eyes on Earth Episode 81 – Tour of the EROS Radome
Eyes on Earth Episode 80 – ECOSTRESS and Carbon
Eyes on Earth Episode 79 – Landsat Global Archive Consolidation
Eyes on Earth Episode 78 – Landsat 50 Lookback
Eyes on Earth Episode 77 – ECOSTRESS and Urban Heat
Eyes on Earth Episode 76 – ECOSTRESS and Disease Risk
Eyes on Earth Episode 75 – Mapping Dust Sources Worldwide
Eyes on Earth Episode 74 – A Satellite Cross Calibration Mission
Eyes on Earth Episode 73 – Global Water Use
Eyes on Earth Episode 72 – Northward Shift of the Boreal Forest
Eyes on Earth Episode 71 – Blue Oak Forests of California
Eyes on Earth Episode 70 - ECOSTRESS and Aquatic Ecosystems
Eyes on Earth audio archive
Urban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
The National Land Cover Database, or NLCD, was the first and remains the most well-known set of satellite-based land cover mapping products released by EROS. It sorts the each 30-by-30-meter plot of land in the United States into a land cover class, such as cropland, pasture, high-intensity developed, deciduous forest, and the like.
The National Land Cover Database, or NLCD, was the first and remains the most well-known set of satellite-based land cover mapping products released by EROS. It sorts the each 30-by-30-meter plot of land in the United States into a land cover class, such as cropland, pasture, high-intensity developed, deciduous forest, and the like.
Mapping fire perimeters is important work. It guides post-fire restoration efforts, fire mitigation strategies, and helps track of trends in burn severity over time. In the past, many of Canada’s fire agencies relied heavily on techniques like sketch mapping, which estimate burned area without exact measurements.
Mapping fire perimeters is important work. It guides post-fire restoration efforts, fire mitigation strategies, and helps track of trends in burn severity over time. In the past, many of Canada’s fire agencies relied heavily on techniques like sketch mapping, which estimate burned area without exact measurements.
The invasive species hemlock woolly adelgid is a threat to eastern hemlocks, filling some southeastern U.S. forests with what are called “gray ghosts” of the trees. Until recently, the insect had stayed in the southern part New York, but late last summer, an infestation was discovered in the Adirondacks.
The invasive species hemlock woolly adelgid is a threat to eastern hemlocks, filling some southeastern U.S. forests with what are called “gray ghosts” of the trees. Until recently, the insect had stayed in the southern part New York, but late last summer, an infestation was discovered in the Adirondacks.
The fire science community is always on the lookout for the freshest satellite-derived fire disturbance maps. Aiming to meet those needs, the multi-agency partnership known as LANDFIRE has just released an update that adds three new years of disturbances across the U.S. to its 20-plus layers of GIS data.
The fire science community is always on the lookout for the freshest satellite-derived fire disturbance maps. Aiming to meet those needs, the multi-agency partnership known as LANDFIRE has just released an update that adds three new years of disturbances across the U.S. to its 20-plus layers of GIS data.
About 15 million people rely on the Delaware River Basin for drinking water, including residents of Philadelphia, PA, Camden, NJ, and Wilmington, DE. What might happen to the water supply if climate change and population growth continue unabated? How might that impact land cover and land use patterns?
About 15 million people rely on the Delaware River Basin for drinking water, including residents of Philadelphia, PA, Camden, NJ, and Wilmington, DE. What might happen to the water supply if climate change and population growth continue unabated? How might that impact land cover and land use patterns?
Teams at the USGS EROS Center have completed fire atlases for nine National Parks across the U.S. Each atlas defines the size and severity of each fire in each park since 1984, including fires too small to be mapped by other programs. Yellowstone National Park has had nearly 100 fires, for example, ranging from a few acres to thousands of acres.
Teams at the USGS EROS Center have completed fire atlases for nine National Parks across the U.S. Each atlas defines the size and severity of each fire in each park since 1984, including fires too small to be mapped by other programs. Yellowstone National Park has had nearly 100 fires, for example, ranging from a few acres to thousands of acres.
It’s possible to map vegetation type with Landsat, but getting the maps right requires more than satellites alone. The teams behind LANDFIRE use an extensive network of ground control points to check their work, thereby bolstering the reliability and utility of their multi-layer GIS product suite.
It’s possible to map vegetation type with Landsat, but getting the maps right requires more than satellites alone. The teams behind LANDFIRE use an extensive network of ground control points to check their work, thereby bolstering the reliability and utility of their multi-layer GIS product suite.
Ladies of Landsat aims to help women and other underrepresented groups feel welcomed and supported in the field of remote sensing. The Twitter group has grown to 5,700 members and counting since Dr. Kate Fickas started it in 2018 during a Landsat Science Team meeting at EROS.
Ladies of Landsat aims to help women and other underrepresented groups feel welcomed and supported in the field of remote sensing. The Twitter group has grown to 5,700 members and counting since Dr. Kate Fickas started it in 2018 during a Landsat Science Team meeting at EROS.
Deforestation is a significant concern for many parts of the globe, particularly in places like the rainforests of the Amazon or the Congo. Scientists, governments, and non-governmental organizations turn to satellite data to track deforestation, as well as to set targets for improvement.
Deforestation is a significant concern for many parts of the globe, particularly in places like the rainforests of the Amazon or the Congo. Scientists, governments, and non-governmental organizations turn to satellite data to track deforestation, as well as to set targets for improvement.
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked.
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked.
Dr. Alan Belward has spent a lot of time thinking about the planet’s surface water. The former Landsat Science Team member uses satellite data to track changes to lakes, rivers, and streams, and recently published a book that uses Landsat data to tell some of those stories.
Dr. Alan Belward has spent a lot of time thinking about the planet’s surface water. The former Landsat Science Team member uses satellite data to track changes to lakes, rivers, and streams, and recently published a book that uses Landsat data to tell some of those stories.
The St. Mary and Milk Rivers cross the U.S. and Canadian border and supply water to both countries. Managing that resource in the interest of both nations is a matter of international collaboration and cooperation, and Landsat data is helping offer objective information on water use.
The St. Mary and Milk Rivers cross the U.S. and Canadian border and supply water to both countries. Managing that resource in the interest of both nations is a matter of international collaboration and cooperation, and Landsat data is helping offer objective information on water use.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
Albedo—the amount of incoming solar radiation reflected into space from the Earth’s surface—is a key measurement for surface temperatures and plant productivity. It also factors into weather forecasting and climate modeling. Landsat Science Team member Dr.
Albedo—the amount of incoming solar radiation reflected into space from the Earth’s surface—is a key measurement for surface temperatures and plant productivity. It also factors into weather forecasting and climate modeling. Landsat Science Team member Dr.
Landsat data is more useful today than at any other point in its nearly 50-year history. The USGS Collections strategy is a major reason why. Landsat Collections align and correct satellite acquisitions from 1972 through the present to make the data easier to work with through time.
Landsat data is more useful today than at any other point in its nearly 50-year history. The USGS Collections strategy is a major reason why. Landsat Collections align and correct satellite acquisitions from 1972 through the present to make the data easier to work with through time.
Brazil is a fascinating study in water use. Brazil uses roughly 72 percent of its water for irrigated agriculture, and its herds of cattle, pigs and poultry are among the largest in the world.
Brazil is a fascinating study in water use. Brazil uses roughly 72 percent of its water for irrigated agriculture, and its herds of cattle, pigs and poultry are among the largest in the world.
In the past, remote sensing scientists looked for change on the Earth’s surface primarily by comparing one Landsat image to another.
In the past, remote sensing scientists looked for change on the Earth’s surface primarily by comparing one Landsat image to another.
The Green Revolution leaned on fertilizers, drought-resistant seeds and other modern innovations to boost agricultural production across much of the planet in the second half of the 20th Century. But many of those innovations never reached West Africa, partially because the lack of social safety nets and crop insurance made such investments too risky.
The Green Revolution leaned on fertilizers, drought-resistant seeds and other modern innovations to boost agricultural production across much of the planet in the second half of the 20th Century. But many of those innovations never reached West Africa, partially because the lack of social safety nets and crop insurance made such investments too risky.
When a disaster like a hurricane, flood or major wildfire hits a remote part of the world, the International Charter Space and Natural Disasters springs into action.
When a disaster like a hurricane, flood or major wildfire hits a remote part of the world, the International Charter Space and Natural Disasters springs into action.
Evapotranspiration is the process by which water transpires from the leaves and stems of plants and evaporates from the Earth’s surface. ET is an important metric for managing water use, but data availability has long been an issue.
Evapotranspiration is the process by which water transpires from the leaves and stems of plants and evaporates from the Earth’s surface. ET is an important metric for managing water use, but data availability has long been an issue.
Eyes on Earth Honors 50-Year USGS EROS Legacy in 100th Episode
Check out our newest episode of Eyes on Earth – it’s a big one!
Related Content
Find past episodes and their episode pages below.
Click on an episode title to visit the episode page. Episode pages include related content, transcript access, and full episode credits.
Eyes on Earth Episode 81 – Tour of the EROS Radome
Eyes on Earth Episode 80 – ECOSTRESS and Carbon
Eyes on Earth Episode 79 – Landsat Global Archive Consolidation
Eyes on Earth Episode 78 – Landsat 50 Lookback
Eyes on Earth Episode 77 – ECOSTRESS and Urban Heat
Eyes on Earth Episode 76 – ECOSTRESS and Disease Risk
Eyes on Earth Episode 75 – Mapping Dust Sources Worldwide
Eyes on Earth Episode 74 – A Satellite Cross Calibration Mission
Eyes on Earth Episode 73 – Global Water Use
Eyes on Earth Episode 72 – Northward Shift of the Boreal Forest
Eyes on Earth Episode 71 – Blue Oak Forests of California
Eyes on Earth Episode 70 - ECOSTRESS and Aquatic Ecosystems
Eyes on Earth audio archive
Urban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
Urban heat islands occur in areas containing more impervious surfaces and fewer natural environments. The day and night surface temperature is higher in urban heat islands than in surrounding areas. During heat waves, this can lead to greater numbers of heat-related illnesses and deaths.
The National Land Cover Database, or NLCD, was the first and remains the most well-known set of satellite-based land cover mapping products released by EROS. It sorts the each 30-by-30-meter plot of land in the United States into a land cover class, such as cropland, pasture, high-intensity developed, deciduous forest, and the like.
The National Land Cover Database, or NLCD, was the first and remains the most well-known set of satellite-based land cover mapping products released by EROS. It sorts the each 30-by-30-meter plot of land in the United States into a land cover class, such as cropland, pasture, high-intensity developed, deciduous forest, and the like.
Mapping fire perimeters is important work. It guides post-fire restoration efforts, fire mitigation strategies, and helps track of trends in burn severity over time. In the past, many of Canada’s fire agencies relied heavily on techniques like sketch mapping, which estimate burned area without exact measurements.
Mapping fire perimeters is important work. It guides post-fire restoration efforts, fire mitigation strategies, and helps track of trends in burn severity over time. In the past, many of Canada’s fire agencies relied heavily on techniques like sketch mapping, which estimate burned area without exact measurements.
The invasive species hemlock woolly adelgid is a threat to eastern hemlocks, filling some southeastern U.S. forests with what are called “gray ghosts” of the trees. Until recently, the insect had stayed in the southern part New York, but late last summer, an infestation was discovered in the Adirondacks.
The invasive species hemlock woolly adelgid is a threat to eastern hemlocks, filling some southeastern U.S. forests with what are called “gray ghosts” of the trees. Until recently, the insect had stayed in the southern part New York, but late last summer, an infestation was discovered in the Adirondacks.
The fire science community is always on the lookout for the freshest satellite-derived fire disturbance maps. Aiming to meet those needs, the multi-agency partnership known as LANDFIRE has just released an update that adds three new years of disturbances across the U.S. to its 20-plus layers of GIS data.
The fire science community is always on the lookout for the freshest satellite-derived fire disturbance maps. Aiming to meet those needs, the multi-agency partnership known as LANDFIRE has just released an update that adds three new years of disturbances across the U.S. to its 20-plus layers of GIS data.
About 15 million people rely on the Delaware River Basin for drinking water, including residents of Philadelphia, PA, Camden, NJ, and Wilmington, DE. What might happen to the water supply if climate change and population growth continue unabated? How might that impact land cover and land use patterns?
About 15 million people rely on the Delaware River Basin for drinking water, including residents of Philadelphia, PA, Camden, NJ, and Wilmington, DE. What might happen to the water supply if climate change and population growth continue unabated? How might that impact land cover and land use patterns?
Teams at the USGS EROS Center have completed fire atlases for nine National Parks across the U.S. Each atlas defines the size and severity of each fire in each park since 1984, including fires too small to be mapped by other programs. Yellowstone National Park has had nearly 100 fires, for example, ranging from a few acres to thousands of acres.
Teams at the USGS EROS Center have completed fire atlases for nine National Parks across the U.S. Each atlas defines the size and severity of each fire in each park since 1984, including fires too small to be mapped by other programs. Yellowstone National Park has had nearly 100 fires, for example, ranging from a few acres to thousands of acres.
It’s possible to map vegetation type with Landsat, but getting the maps right requires more than satellites alone. The teams behind LANDFIRE use an extensive network of ground control points to check their work, thereby bolstering the reliability and utility of their multi-layer GIS product suite.
It’s possible to map vegetation type with Landsat, but getting the maps right requires more than satellites alone. The teams behind LANDFIRE use an extensive network of ground control points to check their work, thereby bolstering the reliability and utility of their multi-layer GIS product suite.
Ladies of Landsat aims to help women and other underrepresented groups feel welcomed and supported in the field of remote sensing. The Twitter group has grown to 5,700 members and counting since Dr. Kate Fickas started it in 2018 during a Landsat Science Team meeting at EROS.
Ladies of Landsat aims to help women and other underrepresented groups feel welcomed and supported in the field of remote sensing. The Twitter group has grown to 5,700 members and counting since Dr. Kate Fickas started it in 2018 during a Landsat Science Team meeting at EROS.
Deforestation is a significant concern for many parts of the globe, particularly in places like the rainforests of the Amazon or the Congo. Scientists, governments, and non-governmental organizations turn to satellite data to track deforestation, as well as to set targets for improvement.
Deforestation is a significant concern for many parts of the globe, particularly in places like the rainforests of the Amazon or the Congo. Scientists, governments, and non-governmental organizations turn to satellite data to track deforestation, as well as to set targets for improvement.
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked.
Landsat satellites have monitoring the Earth’s surface for nearly 50 years, providing critical information for countless areas of study and real-world applications. But with observations only collected every 8-16 days, there are limits to what can be tracked.
Dr. Alan Belward has spent a lot of time thinking about the planet’s surface water. The former Landsat Science Team member uses satellite data to track changes to lakes, rivers, and streams, and recently published a book that uses Landsat data to tell some of those stories.
Dr. Alan Belward has spent a lot of time thinking about the planet’s surface water. The former Landsat Science Team member uses satellite data to track changes to lakes, rivers, and streams, and recently published a book that uses Landsat data to tell some of those stories.
The St. Mary and Milk Rivers cross the U.S. and Canadian border and supply water to both countries. Managing that resource in the interest of both nations is a matter of international collaboration and cooperation, and Landsat data is helping offer objective information on water use.
The St. Mary and Milk Rivers cross the U.S. and Canadian border and supply water to both countries. Managing that resource in the interest of both nations is a matter of international collaboration and cooperation, and Landsat data is helping offer objective information on water use.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
Albedo—the amount of incoming solar radiation reflected into space from the Earth’s surface—is a key measurement for surface temperatures and plant productivity. It also factors into weather forecasting and climate modeling. Landsat Science Team member Dr.
Albedo—the amount of incoming solar radiation reflected into space from the Earth’s surface—is a key measurement for surface temperatures and plant productivity. It also factors into weather forecasting and climate modeling. Landsat Science Team member Dr.
Landsat data is more useful today than at any other point in its nearly 50-year history. The USGS Collections strategy is a major reason why. Landsat Collections align and correct satellite acquisitions from 1972 through the present to make the data easier to work with through time.
Landsat data is more useful today than at any other point in its nearly 50-year history. The USGS Collections strategy is a major reason why. Landsat Collections align and correct satellite acquisitions from 1972 through the present to make the data easier to work with through time.
Brazil is a fascinating study in water use. Brazil uses roughly 72 percent of its water for irrigated agriculture, and its herds of cattle, pigs and poultry are among the largest in the world.
Brazil is a fascinating study in water use. Brazil uses roughly 72 percent of its water for irrigated agriculture, and its herds of cattle, pigs and poultry are among the largest in the world.
In the past, remote sensing scientists looked for change on the Earth’s surface primarily by comparing one Landsat image to another.
In the past, remote sensing scientists looked for change on the Earth’s surface primarily by comparing one Landsat image to another.
The Green Revolution leaned on fertilizers, drought-resistant seeds and other modern innovations to boost agricultural production across much of the planet in the second half of the 20th Century. But many of those innovations never reached West Africa, partially because the lack of social safety nets and crop insurance made such investments too risky.
The Green Revolution leaned on fertilizers, drought-resistant seeds and other modern innovations to boost agricultural production across much of the planet in the second half of the 20th Century. But many of those innovations never reached West Africa, partially because the lack of social safety nets and crop insurance made such investments too risky.
When a disaster like a hurricane, flood or major wildfire hits a remote part of the world, the International Charter Space and Natural Disasters springs into action.
When a disaster like a hurricane, flood or major wildfire hits a remote part of the world, the International Charter Space and Natural Disasters springs into action.
Evapotranspiration is the process by which water transpires from the leaves and stems of plants and evaporates from the Earth’s surface. ET is an important metric for managing water use, but data availability has long been an issue.
Evapotranspiration is the process by which water transpires from the leaves and stems of plants and evaporates from the Earth’s surface. ET is an important metric for managing water use, but data availability has long been an issue.
Eyes on Earth Honors 50-Year USGS EROS Legacy in 100th Episode
Check out our newest episode of Eyes on Earth – it’s a big one!