Dr. Derek Alderman interviewed by Detroit’s NPR Station




I was honored to be invited by several highly prestigious institutes in India during my Spring 2023 sabbatical semester. These included the International Institute for Population Sciences (IIPS)-Mumbai, the Institute for Social and Economic Change (ISEC) at Bengaluru, the Center for Study of Science, Technology and Policy (C-STEP), Bengaluru, School of Planning and Architecture-Bhopal, and University of Delhi, among others. I was proud and happy to represent our Department of Geography & Sustainability and disseminate knowledge, share and learn from the academic audience in India through these research presentations and workshops. Some of the most interesting events and photos are shown below.
Event 1: Research presentation at the seminar co-organized and co-hosted by the IIPS and ISEC, at Bengaluru, India. The topic was: “Domestic Work, Livelihoods and COVID-19: An Analysis of 38 Domestic Workers in Titwala, Mumbai.” I also served as a Discussant for numerous sessions organized by the newly created South Asia Centre for Labour Mobility and Migrants (SALAM)-IIPS at this seminar.

Few photos from this event where Dr. Sharma was honored to serve as a discussant for several sessions organized at this seminar, jointly co-organized by IIPS and ISEC at Bengaluru:


Event 2: School of Planning and Architecture, Bhopal, India: Honored to be invited by the School of Planning & Architecture, Bhopal, to demonstrate application of quantitative skills in social science research. I created a workshop-styled presentation for the MSs and B.Sc. students of SPA-Bhopal. This lecture was followed by an interactive SPSS demonstration for all participants. Proud of being a Vol abroad here in India.

Event 3: Public Lecture at the International Institute for Population Sciences (IIPS), Mumbai: Honored to be invited to deliver a public lecture at the International Institute for Population Sciences (Mumbai) on 3rd April 2023. The topic was: Urbanization and Housing: An Inter- and Intra-district Analysis of Housing Shortage, Livability and Quality of Life in the National Capital Territory of Delhi, 2001–2011–2020. Few pics from this public event are below:




Event 4: Center for Study of Science, Technology and Policy (C-STEP), Bengaluru, India, 14 April 2023: I was very happy to deliver an invited research lecture at the C-STEP, Bengaluru. My topic was “Urbanization and Housing: Livability, Sustainability and Quality of Life in the National Capital Territory of Delhi, 2001–2011–2020.” This presentation was heard by a global audience of C-STEP from India and its branches in other countries of the world. This was a truly interactive long session wherein several new ideas emerged during the Q&A session.

Event 4: An invited seminar for undergrads/grads at Univ. of Delhi. These students wanted to learn about my work on USA. So I presented about gender economic disparity and commonalities at global scale!!





Qiusheng Wu, University of Tennessee
If you want to track changes in the Amazon rainforest, see the full expanse of a hurricane or figure out where people need help after a disaster, it’s much easier to do with the view from a satellite orbiting a few hundred miles above Earth.
Traditionally, access to satellite data has been limited to researchers and professionals with expertise in remote sensing and image processing. However, the increasing availability of open-access data from government satellites such as Landsat and Sentinel, and free cloud-computing resources such as Amazon Web Services, Google Earth Engine and Microsoft Planetary Computer, have made it possible for just about anyone to gain insight into environmental changes underway.
I work with geospatial big data as a professor. Here’s a quick tour of where you can find satellite images, plus some free, fairly simple tools that anyone can use to create time-lapse animations from satellite images.
For example, state and urban planners – or people considering a new home – can watch over time how rivers have moved, construction crept into wildland areas or a coastline eroded.


Environmental groups can monitor deforestation, the effects of climate change on ecosystems, and how other human activities like irrigation are shrinking bodies of water like Central Asia’s Aral Sea. And disaster managers, aid groups, scientists and anyone interested can monitor natural disasters such as volcanic eruptions and wildfires.


There are over 8,000 satellites orbiting the Earth today. You can see a live map of them at keeptrack.space.
Some transmit and receive radio signals for communications. Others provide global positioning system (GPS) services for navigation. The ones we’re interested in are Earth observation satellites, which collect images of the Earth, day and night.
Landsat: The longest-running Earth satellite mission, Landsat, has been collecting imagery of the Earth since 1972. The latest satellite in the series, Landsat 9, was launched by NASA in September 2021.
In general, Landsat satellite data has a spatial resolution of about 100 feet (about 30 meters). If you think of pixels on a zoomed-in photo, each pixel would be 100 feet by 100 feet. Landsat has a temporal resolution of 16 days, meaning the same location on Earth is imaged approximately once every 16 days. With both Landsat 8 and 9 in orbit, we can get a global coverage of the Earth once every eight days. That makes comparisons easier.
Landsat data has been freely available to the public since 2008. During the Pakistan flood of 2022, scientists used Landsat data and free cloud-computing resources to determine the flood extent and estimated the total flooded area.

Sentinel: Sentinel Earth observation satellites were launched by the European Space Agency (ESA) as part of the Copernicus program. Sentinel-2 satellites have been collecting optical imagery of the Earth since 2015 at a spatial resolution of 10 meters (33 feet) and a temporal resolution of 10 days.
GOES: The images you’ll see most often in U.S. weather forecasting come from NOAA’s Geostationary Operational Environmental Satellites, or GOES. They orbit above the equator at the same speed Earth rotates, so they can provide continuous monitoring of Earth’s atmosphere and surface, giving detailed information on weather, climate, and other environmental conditions. GOES-16 and GOES-17 can image the Earth at a spatial resolution of about 1.2 miles (2 kilometers) and a temporal resolution of five to 10 minutes.

In the past, creating a Landsat time-lapse animation of a specific area required extensive data processing skills and several hours or even days of work. However, nowadays, free and user-friendly programs are available to enable anyone to create animations with just a few clicks in an internet browser.
For instance, I created an interactive web app for my students that anyone can use to generate time-lapse animations quickly. The user zooms in on the map to find an area of interest, then draws a rectangle around the area to save it as a GeoJSON file – a file that contains the geographic coordinates of the chosen region. Then the user uploads the GeoJSON file to the web app, chooses the satellite to view from and the dates and submits it. It takes the app about 60 seconds to then produce a time-lapse animation.
How to create satellite time-lapse animations.
There are several other useful tools for easily creating satellite animations. Others to try include Snazzy-EE-TS-GIF, an Earth Engine App for creating Landsat animations, and Planetary Computer Explorer, an explorer for searching and visualizing satellite imagery interactively.
Qiusheng Wu, Assistant Professor of Geography and Sustainability, University of Tennessee
This article is republished from The Conversation under a Creative Commons license. Read the original article.

Adam Bledsoe¹, Jasmine Butler², LaToya Eaves³, Alex A. Moulton³
¹University of Minnesota; ²Writer and Cultural Worker; ³University of Tennessee, Knoxville
A SYLLABUS FOR THE PRESENT PREDICAMENT
February 13, 2023 Edition
This reading list provides resources for situating the simultaneous manifestations of antiblackness and assault on Black life in the present. We are specifically motivated by the murder of Tyre Nichols in Memphis, Tennessee, by police officers; the attack on the AP African American Studies course in Florida; and what might be interpreted as the capitulation of the College Board to the demands of Florida’s Republican Governor. These convergent events serve as poignant reminders of the pervasiveness of anti-blackness, the everyday reality of gratuitous police violence, and the regressive nature of a politics of compromise that demurs to white supremacy, historical amnesia, and the sanitizing of Black social and political movements.
This bibliography is divided into four sections. The first provides a primer on the long struggle for Black life in Memphis. The second contextualizes the function of the police, to show how what happened to Mr. Nichols is possible even when the officers committing the violence are Black. The section shows why abolition is an imperative of the struggle for Black life. The third section deals with the ethics and care guiding Black mourning and hope amidst the death dealing of antiblack violence. The fourth and final section is concerned with the indispensability of Black Studies to American Studies, national memory, and the radically transformative potential of critical study.
In addition to this syllabus, we encourage readers to consult the American Association of Geographers statements “On the Structural and Spatial Forces that Contribute to Police Brutality” and on “the targeting of diversity education and critical inquiry by U.S. States”.


LaToya Eaves, assistant professor in the Department of Geography and Sustainability, was named a 2023 Fellow of the American Association of Geographers (AAG). Eaves is one of 16 geographers in a variety of practice areas recognized for their contributions to geographic research, advancement of practice, and careers devoted to strengthening the field of geography, including teaching and mentoring. The honorary title of AAG Fellow is conferred for life.
Her research interest is at the intersections of race, gender, diaspora, critical geography and queer studies. Eaves explores the geographic imaginaries of Blackness, gender, and queerness by bringing critical approaches to the social transformation of places, the nuances of region, and lived experiences under rights-based progress narratives.
Her research has been published in Geoforum, Dialogues in Human Geography, Gender, Place & Culture, The Professional Geographer, and Journal of Geography in Higher Education, among other journals and edited volumes.
She has received numerous accolades within geography, including but not limited to the UT Department of Geography’s Outstanding Faculty Teaching Award, Academic Advancement Award by the Tennessee LGBT+ College Conference, the Ronald F. Abler Distinguished Service Honors by the AAG, and the Enhancing Diversity Award by the AAG.
AAG Fellows serve the AAG as an august body to address, contribute to, and at times create initiatives to advance the discipline. Fellows also advise AAG on strategic directions and challenges, and mentor early- and mid-career faculty. The Fellows will be formally recognized in March at the AAG 2023 annual meeting.
Eaves has established a record of transformative research, dynamic teaching, and dedicated mentoring in the field of geography. Her contributions to the fields of Black Geographies, Black feminism, queer geographies, and the US South are particularly noteworthy. Eaves’s rigorous and accessible scholarship pushes geography as a discipline to engage with the importance of Black geographic thought and practices in the production of space and place. Her scholarship provides accessible entry points for students to engage with Black Geographies, and she has contributed foundational texts for scholars doing work within Black Geographies literature.
One of the founders of the Black Geographies Specialty Group, Eaves’s organization and caring mentorship has transformed the discipline of geography and provided a space and academic home for Black scholars and scholars of Black Geographies. She is a generous and caring mentor as well. Her reputation within the geography community broadly and within the Black Geographies community specifically speaks to her generous mentorship of students and junior scholars, much of which is invisible, uncompensated, and unrecognized work in institutional settings. She has been committed to recognizing and honoring senior Black scholars, organizing panels, special issues of journals, and award applications to assure that these senior scholars are recognized for their foundational contributions.
Beyond the subfield of Black Geographies, Eaves has served the AAG in the roles of national councilor, treasurer and chair of the Finance Committee. She also contributed to the AAG Harassment Free Task Force and the AAG Task Force on Diversifying the Curriculum in Geography, and she co-chaired the AAG New Orleans Featured Theme Committee. She has served as an editor for Dialogues in Human Geography and on numerous editorial boards.
Background information republished from the AAG website.


Our GIS Outreach Coordinator Michael Camponovo was recognized by Esri and National Geographic for a story map he made focusing on EMR, remote sensing, and geospatial tech and how students can use them to study landscape recovery after wildfires. Well done, Michael. Congratulations!
Exploring EMR With Wildfire Satellite Imagery
Combining Math, EMR, and GIS
Teachers are encouraged to download and use this mini-unit lesson plan ( Google Doc link )
Here in the United States, we typically associate wildfires with the western part of the country. But we actually have wildfires all across the country, even here in Tennessee.
While we often think of wildfires as destructive and bad, they are actually a natural part of our landscape. In fact, some species, like the table mountain pine, need fires for their cones to open and drop their seeds . Animals benefit from wildfires too because they change the habitat of the land. You can even become a wildfire ecologist and study the way fire changes the landscape as a career .
One question you might have about wildfires and their impact on the environment is:
How long does it take for an area burned by a wildfire to recover?

A simple way to answer that question would be to see how long it takes for vegetation to appear in the burned area.
Today we are going to use data from satellites to explore this topic while focusing on wildfires in the Southeastern United States. But first, we need to learn a little about electromagnetic radiation and how we collect and visualize that data.

Summer teaching institute explores geographic mobility as it relates to the African American freedom struggle

In July of 2022, the University of Tennessee, Knoxville, hosted a residential summer institute for K-12 educators from across the US, funded by a National Endowment for the Humanities grant (NEH). Participants explored the history of the Civil Rights movement through geographic mobility. The institute highlighted the central role of migration, transportation, and travel and tourism in structural racism and the fight for African American freedom and self-determination.
Participants attended lectures and lab exercises; participated in discussions; and learned methodologies and classroom activities from curriculum and content specialists. They also took field trips around Knoxville, Nashville, and Memphis as part of the institute’s commitment to place-based education.

“Through the institute, we offered a model of critical thought, instruction, and pedagogical application that supports ongoing calls for greater numbers of social studies educators to address power and inequity,” said Derek Alderman, professor of geography.
Alderman and colleague Joshua Kenna, associate professor of social science education in the UT College of Education, Health, and Human Sciences, received nearly $200,000 in funding to host the institute from the National Endowment for the Humanities “A More Perfect Union” initiative, which aims to promote a deeper understanding of American history and culture.

“In addition to having a well-rounded curriculum that utilizes several experts from the field and provides experiential learning opportunities, we’re also proud of our strong emphasis on building and fostering relationships with teachers,” Kenna said. “The goal is not achieved when they acquire the content, it is only achieved when we help them grapple with and overcome pedagogical and logistical hurdles so that they can teach this content in their classrooms.”
Workshops featured guest lectures and hands-on lessons from experts on geographic mobility, race and racism, oral history, digital mapping and the humanities, and pedagogy. The institute culminated with participating teachers developing and presenting curriculum projects and ideas for teaching about the role of migration, transportation, travel and tourism within the Black civil rights experience.
“Our hosting of this summer institute in Knoxville received high marks from participating teachers and NEH program directors. It further cements the University of Tennessee’s reputation as a national leader in teacher training and creating important synergies between the teaching of history, geography, and social justice,” Alderman said. “The university welcomed a brilliant group of K-12 teachers, many of whom are educators of color. They significantly advanced discussions of diversity and inclusion on our campus and taught many of the institute’s staff important lessons about the struggles currently facing the nation’s teachers.”
Read more about the UT initiative, Geographic Mobility in the African American Freedom Struggle, and the NEH grant award that supported this important work in the Department of Geography and Sustainability and the Department of Theory and Practice in Teacher Education at UT.


This summer, our Geography MS Student Morgan Steckler is working with Maxar as an intern. Maxar is a space technology company headquartered in Westminster, Colorado, United States, specializing in manufacturing communication, Earth observation, radar, and on-orbit servicing satellites, satellite products, and related services.

Here is what Morgan shared with us:
“This summer, I worked remotely for Maxar Technologies as a data science intern on the Kestrel team. I analyzed maritime vessel loitering behaviors through independent research and scripted processing of remotely sensed data. This internship greatly improved my understanding and appreciation of the private space and intelligence industry, efficient and effective teamwork, and the colorful role of a data scientist.”
Reference: ESRI Living Atlas app for US Vessel Traffic.

Dr. Qiusheng Wu just published a new blog post – Creating satellite timelapse with Streamlit and Google Earth Engine. Check it out.
Blog: https://blog.streamlit.io/creating-satellite-timelapse-with-streamlit-and-earth-engine
Web App: https://streamlit.gishub.org
GitHub: https://github.com/giswqs/streamlit-geospatial


Jennifer Weeks, The Conversation
Springtime in the U.S. is frequently a season for thunderstorms, which can spawn tornadoes. These large storms are common in the South and Southeast in March and April, then shift toward the Plains states in May. Scientists have warned that 2021 could be an active tornado year, partly because of a La Niña climate pattern in the tropical Pacific Ocean. Past research has suggested that La Niña increases the frequency of tornadoes and hail by concentrating hot, humid air over Texas and other Southern states, which helps to promote storm formation.
These four articles from The Conversation’s archives explain how tornadoes form, why night tornadoes are more deadly, and how in rare cases thunderstorms can take a different but equally destructive form – a derecho. We also look at a neglected aspect of disaster response: disposing of massive quantities of waste.
Most tornadoes are spawned by large, intense thunderstorms called supercell thunderstorms. The key ingredients are rising air that rotates, and wind shear – winds at different altitudes blowing at different speeds, and/or from different directions.
Forecasters can’t always predict when or where a tornado may form, but they are very good at identifying the conditions that have the potential to support strong tornadoes. As Penn State university meteorologists Paul Markowski and Yvette Richardson explain,
“The National Weather Service’s Storm Prediction Center routinely predicts large outbreaks days in advance. ‘High-risk’ outlooks capture most major tornado events, and strong tornadoes rarely occur outside of tornado watches. We have less ability to forecast tornadoes in more marginal situations, such as within non-supercell storms.”
Tornado strikes are bad news at any time, but especially when they occur at night. Night tornadoes are more than twice as likely to be fatal as daytime twisters, for several reasons: They are harder for storm spotters to see, people may sleep through alerts, and victims are more likely to be in vulnerable structures such as mobile homes at night.
Night tornadoes are more common in the South because of regional atmospheric conditions there. University of Tennessee geographer Kelsey Ellis and Middle Tennessee State University geoscientist Alisa Hass write that communication challenges are a serious problem in their state, where nearly half of tornadoes strike at night.
“Experts in Tennessee recommend having multiple methods for receiving warnings at night,” they note. “This strategy allows for backup options when power goes out, cellphones go down or other unforeseen circumstances occur.”
What causes some supercell thunderstorms to become tornadoes?
In rare instances, weather systems can generate organized lines of thunderstorms called derechos, from the Spanish word for “straight ahead.” For a storm to qualify as a derecho, it has to produce winds of 57.5 mph (26 meters per second) or greater. And those intense winds must extend over a path at least 250 miles (400 kilometers) long, with no more than three hours separating individual severe wind reports.
Most areas of the Central and eastern U.S. may experience a derecho once or twice a year on average. They occur mainly from April through August, but they can also occur earlier in spring or later in fall. And they can inflict heavy damage. A derecho that swept across the Midwest in August 2020 generated over US$7.5 billion in damages – the nation’s most costly thunderstorm.
Derechos can be even harder to predict than tornadoes, and once they form, they can move very fast. As Colorado State University atmospheric scientist Russ Schumacher warns,
“Communities, first responders and utilities may have only a few hours to prepare for an oncoming derecho, so it is important to know how to receive severe thunderstorm warnings, such as TV, radio and smartphone alerts, and to take these warnings seriously. Tornadoes and tornado warnings often get the most attention, but lines of severe thunderstorms can also pack a major punch.”

Tornadoes and other natural disasters often leave huge quantities of debris behind – uprooted trees, splintered buildings, smashed cars and more. It can take communities months or even years to clean up, and the process typically is slow, expensive and dangerous.
Sybil Derrible of the University of Illinois–Chicago, Juyeong Choi of Florida State University and Nazli Yesiller of California Polytechnic State University study urban engineering, disaster management and planning, and waste management. They see a need for new technologies and strategies that officials can use to figure out what materials storm debris contains and find options for separating, reusing and recycling it.
“For example, drones and autonomous sensing technologies can be combined with artificial intelligence to estimate amounts and quality of debris, the types of materials it contains and how it can be repurposed rapidly. Technologies that allow for fast sorting and separation of mixed materials can also speed up debris management operations,” they write.
“Turning the problem around, creating new sustainable construction materials – especially in disaster-prone areas – will make it easier to repurpose debris after disasters.”
Editor’s note: This story is a roundup of articles from The Conversation’s archives.
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Jennifer Weeks, Senior Environment + Energy Editor, The Conversation
This article is republished from The Conversation under a Creative Commons license. Read the original article.